首页 > 最新文献

Fullerenes, Nanotubes and Carbon Nanostructures最新文献

英文 中文
Is triple crossed C 28 cyclic polyyne cluster a stable conformation? 三交c28环状聚酰亚胺簇是稳定的构象吗?
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-11-06 DOI: 10.1080/1536383x.2023.2261573
Carmen E. Stoenoiu, Mihai V. Putz, Lorentz Jäntschi
AbstractPolyynes sometimes referred to as oligoynes or carbinoids, and their resonance cumulene form are valuable precursors to a whole series of more complex organic derivatives. Motivated by a series of studies that explore the stabilization of polyynes, in different ways, the possibility of their stabilization through the formation of crossed cycles is explored in this article. It is easy to notice that the cyclic conformations represent a special case, in that they possess an increased symmetry. The stability of the polyene molecule can be enhanced by building cross-clusters. In this article, the molecular modeling tools were employed in order to provide insights about the construction and stability of 3C28 triple crossed C28 cyclic polyyne cluster. It has been shown that C28 and 3C28 triple crossed C28 are very similar energetically. HOMO–LUMO gap suggests a metallic conductivity. The angles between the planes of the molecular rings shows almost an axial alignment of the rings. A symmetry-constrained optimization was conducted using Z-matrix internal coordinates and Gaussian software, and it revealed that the geometrical conformation of C28 polyyne as triple crossed cluster is a stable conformation, since in all investigated scenarios the convergence is assured and it is to nearly optimum local points.Keywords: Polyynesmolecular clustersdensity functional theory (DFT) AcknowledgmentsHelp from the reviewers in improving the work was highly appreciated. This contribution was submitted and presented in behalf of NANOMOD (2023): NANO-SCI(ENCE) & NANO-TECH(NOLOGY) MANAGEMENT IN THE DIGITAL AND ARTIFICIAL INTELLIGENT ERA, Research International Workshop – Third Edition, Hosted by SIM 2023: REINVENTING MANAGEMENT IN TURBULENT TIMES, 20–21 October 2023, Timisoara, Romania.Author contributionsC.E.S.: formal analysis, investigation, resources, validation, writing—review and editing; M.V.P.: writing—original draft preparation; L.J.: conceptualization, drawings, methodology, supervision.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementAppendix A.3 contains atoms coordinates for 3C28(3×) cluster. Appendices A.4 and A.5 contain optimization output from symmetry constrained optimization of 3C28(3×) cluster (Appendix A.4 for ab initio and Appendix A.5 for DFT).Additional informationFundingThis research received no external funding.
聚炔有时被称为低聚炔或类碳,它们的共振积云烯形式是一系列更复杂的有机衍生物的有价值的前体。在一系列研究的推动下,以不同的方式探讨了多炔的稳定性,本文探讨了通过形成交叉旋回来稳定多炔的可能性。很容易注意到,环状构象是一种特殊情况,因为它们具有更大的对称性。通过构建交叉簇可以提高多烯分子的稳定性。本文采用分子模拟的方法对3C28三交环聚烯烃簇的结构和稳定性进行了研究。结果表明,C28和3C28三交联C28在能量上非常相似。HOMO-LUMO间隙提示金属电导率。分子环平面之间的角度几乎显示出环的轴向排列。利用z矩阵内坐标和高斯软件进行了对称约束优化,结果表明C28聚乙烯的三交叉簇几何构象是一个稳定的构象,因为在所有的研究场景下,其收敛性都是保证的,并且接近最优局部点。关键词:聚聚;分子簇;密度泛函理论(DFT)本文是代表NANOMOD(2023):数字和人工智能时代的纳米sci (ENCE)和纳米技术(NOLOGY)管理,研究国际研讨会-第三版,由SIM 2023主办:重塑动荡时代的管理,2023年10月20-21日,罗马尼亚蒂米米瓦拉。作者贡献:形式分析,调查,资源,验证,写作-审查和编辑;M.V.P:写作-原稿准备;概念化,图纸,方法,监督。披露声明作者未报告潜在的利益冲突。数据可用性声明附录A.3包含3C28(3x)集群的原子坐标。附录A.4和A.5包含3C28(3x)簇对称约束优化的优化输出(附录A.4用于从头算,附录A.5用于DFT)。本研究未获得外部资助。
{"title":"Is triple crossed C <sub>28</sub> cyclic polyyne cluster a stable conformation?","authors":"Carmen E. Stoenoiu, Mihai V. Putz, Lorentz Jäntschi","doi":"10.1080/1536383x.2023.2261573","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2261573","url":null,"abstract":"AbstractPolyynes sometimes referred to as oligoynes or carbinoids, and their resonance cumulene form are valuable precursors to a whole series of more complex organic derivatives. Motivated by a series of studies that explore the stabilization of polyynes, in different ways, the possibility of their stabilization through the formation of crossed cycles is explored in this article. It is easy to notice that the cyclic conformations represent a special case, in that they possess an increased symmetry. The stability of the polyene molecule can be enhanced by building cross-clusters. In this article, the molecular modeling tools were employed in order to provide insights about the construction and stability of 3C28 triple crossed C28 cyclic polyyne cluster. It has been shown that C28 and 3C28 triple crossed C28 are very similar energetically. HOMO–LUMO gap suggests a metallic conductivity. The angles between the planes of the molecular rings shows almost an axial alignment of the rings. A symmetry-constrained optimization was conducted using Z-matrix internal coordinates and Gaussian software, and it revealed that the geometrical conformation of C28 polyyne as triple crossed cluster is a stable conformation, since in all investigated scenarios the convergence is assured and it is to nearly optimum local points.Keywords: Polyynesmolecular clustersdensity functional theory (DFT) AcknowledgmentsHelp from the reviewers in improving the work was highly appreciated. This contribution was submitted and presented in behalf of NANOMOD (2023): NANO-SCI(ENCE) & NANO-TECH(NOLOGY) MANAGEMENT IN THE DIGITAL AND ARTIFICIAL INTELLIGENT ERA, Research International Workshop – Third Edition, Hosted by SIM 2023: REINVENTING MANAGEMENT IN TURBULENT TIMES, 20–21 October 2023, Timisoara, Romania.Author contributionsC.E.S.: formal analysis, investigation, resources, validation, writing—review and editing; M.V.P.: writing—original draft preparation; L.J.: conceptualization, drawings, methodology, supervision.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementAppendix A.3 contains atoms coordinates for 3C28(3×) cluster. Appendices A.4 and A.5 contain optimization output from symmetry constrained optimization of 3C28(3×) cluster (Appendix A.4 for ab initio and Appendix A.5 for DFT).Additional informationFundingThis research received no external funding.","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"1984 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135635579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement effect of multiwalled carbon nanotubes on mortars prepared with different grades of recycled fine aggregates 多壁碳纳米管对不同等级再生细骨料砂浆的增强作用
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-26 DOI: 10.1080/1536383x.2023.2272692
Yifan Jiang, Guifeng Liu, Zhengfa Chen, Qifeng Lyu
{"title":"Enhancement effect of multiwalled carbon nanotubes on mortars prepared with different grades of recycled fine aggregates","authors":"Yifan Jiang, Guifeng Liu, Zhengfa Chen, Qifeng Lyu","doi":"10.1080/1536383x.2023.2272692","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2272692","url":null,"abstract":"","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"31 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile synthesis of NiAl-LDH/Ag/g-C 3 N 4 ternary composite for photocatalytic degradation of methylene blue 光催化降解亚甲基蓝的NiAl-LDH/Ag/g- c3n4三元复合材料的简易合成
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-26 DOI: 10.1080/1536383x.2023.2273420
Muhammad Usman, Khurram Imran Khan, Muhammad Adnan, Ahsan Khan
AbstractThe use of organic dyes has surged across industries like textiles, plastics, and construction. Contaminated water with these dyes is released into the environment, endangering both humans and ecosystems. In this research, we synthesized ternary composites of NiAl-LDH/Ag/g-C3N4 using hydrothermal methods. We conducted a comprehensive examination of the prepared catalysts, employing various analytical techniques to assess their structural, optical, morphological, and surface chemical properties. The surface area analysis confirmed a mean pore volume of 0.245 cm³/g, a favorable surface area of 36.4 cm2/g, and a pore diameter of 2.68 nm. The creation of strong interfacial contact between NiAL LDH, Ag, and g-C3N4 caused the charges to be separated for a long time. The degradation of methylene blue (MB) dye under the influence of solar light was used to test the photocatalytic performance of the as-prepared catalyst. A set of reusability experiments was carried out over four cycles using the photocatalyst, and the characterization findings demonstrated that the preservation of crystalline planes plays a pivotal role in achieving its high efficiency. Notably, a remarkable 99.1% reduction in chemical oxygen demand (% COD) was achieved for MB. Additionally, scavenger studies were undertaken to identify the primary reactive species involved in the process. The maximum degradation efficiency of 99.60%, with the highest R2 value of 0.9921 was achieved for the photocatalytic degradation of MB respectively in 160 min. These results indicated that the new z-scheme ternary photocatalyst can be used as an efficient, green, effective, and recyclable for the photocatalytic degradation of organic pollutants.Keywords: Photocatalysislayered double hydroxide (LDH)NiAl-LDH/Ag/g-C3N4Z-schemedye degradation Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要:有机染料在纺织、塑料和建筑等行业的使用激增。被这些染料污染的水被释放到环境中,危害人类和生态系统。本研究采用水热法合成了NiAl-LDH/Ag/g-C3N4三元复合材料。我们对所制备的催化剂进行了全面的检查,采用各种分析技术来评估它们的结构、光学、形态和表面化学性质。比表面积分析证实平均孔体积为0.245 cm³/g,有利比表面积为36.4 cm2/g,孔径为2.68 nm。NiAL LDH、Ag和g-C3N4之间产生了强的界面接触,导致电荷长时间分离。利用太阳光对亚甲基蓝(MB)染料的降解作用,测试了所制备催化剂的光催化性能。使用光催化剂进行了四次循环的重复使用实验,表征结果表明,晶体平面的保存在实现其高效率方面起着关键作用。值得注意的是,MB的化学需氧量(% COD)显著降低了99.1%。此外,研究人员还进行了清道夫研究,以确定参与该过程的主要反应物质。在160 min的时间内,光催化降解MB的效率最高可达99.60%,R2值最高可达0.9921。结果表明,新型z-scheme三元光催化剂可作为一种高效、绿色、有效、可回收的光催化降解有机污染物的材料。关键词:光催化;层状双氢氧化物(LDH); NiAl-LDH/Ag/g- c3n4z方案;
{"title":"Facile synthesis of NiAl-LDH/Ag/g-C <sub>3</sub> N <sub>4</sub> ternary composite for photocatalytic degradation of methylene blue","authors":"Muhammad Usman, Khurram Imran Khan, Muhammad Adnan, Ahsan Khan","doi":"10.1080/1536383x.2023.2273420","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2273420","url":null,"abstract":"AbstractThe use of organic dyes has surged across industries like textiles, plastics, and construction. Contaminated water with these dyes is released into the environment, endangering both humans and ecosystems. In this research, we synthesized ternary composites of NiAl-LDH/Ag/g-C3N4 using hydrothermal methods. We conducted a comprehensive examination of the prepared catalysts, employing various analytical techniques to assess their structural, optical, morphological, and surface chemical properties. The surface area analysis confirmed a mean pore volume of 0.245 cm³/g, a favorable surface area of 36.4 cm2/g, and a pore diameter of 2.68 nm. The creation of strong interfacial contact between NiAL LDH, Ag, and g-C3N4 caused the charges to be separated for a long time. The degradation of methylene blue (MB) dye under the influence of solar light was used to test the photocatalytic performance of the as-prepared catalyst. A set of reusability experiments was carried out over four cycles using the photocatalyst, and the characterization findings demonstrated that the preservation of crystalline planes plays a pivotal role in achieving its high efficiency. Notably, a remarkable 99.1% reduction in chemical oxygen demand (% COD) was achieved for MB. Additionally, scavenger studies were undertaken to identify the primary reactive species involved in the process. The maximum degradation efficiency of 99.60%, with the highest R2 value of 0.9921 was achieved for the photocatalytic degradation of MB respectively in 160 min. These results indicated that the new z-scheme ternary photocatalyst can be used as an efficient, green, effective, and recyclable for the photocatalytic degradation of organic pollutants.Keywords: Photocatalysislayered double hydroxide (LDH)NiAl-LDH/Ag/g-C3N4Z-schemedye degradation Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136376678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of microwave-absorbing properties of aligned polyaniline/multi-walled carbon nanotubes nanocomposites 排列聚苯胺/多壁碳纳米管纳米复合材料的吸波性能研究
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-26 DOI: 10.1080/1536383x.2023.2264994
Zhaonan Sun, Fanghui Wang, Linghan Kong
AbstractA aligned polyaniline/carbon nanotubes (a-PANI/CNTs) nanocomposite was synthesized by in situ polymerization. The structural and the microwave-absorbing properties of the a-PANI/CNTs nanocomposites were studied. Transmission electron microscopy, X-ray diffraction and Raman spectra were carried out to confirm the formation of a vertically grown PANI array on the surface of the CNTs. With a matching thickness of 1.5 mm, the a-PANI/CNTs had a maximum reflection loss of about −29.49 dB. Moreover, the bandwidth corresponding to reflection loss below −10 dB was about 4.42 GHz (13.58 GHz to 18.00 GHz), which is significantly better than those of CNTs, PANI and PANI/CNTs. We ascribed the enhanced microwave-absorbing properties to the unique ordered structure of aligned PANI.Keywords: Aligned PANIcarbon nanotubesnanocompositesmicrowave-absorbing properties Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work is supported by the program of “Feasibility study of on-site smoke purification for electrical fire incidents” by China Fire And Rescue Institute (No. XFKYB202310).
摘要采用原位聚合法制备了定向聚苯胺/碳纳米管(a-PANI/CNTs)纳米复合材料。研究了聚苯胺/碳纳米管复合材料的结构和吸波性能。透射电镜、x射线衍射和拉曼光谱证实了在CNTs表面形成了垂直生长的聚苯胺阵列。当匹配厚度为1.5 mm时,a- pani /CNTs的最大反射损耗约为−29.49 dB。−10 dB以下反射损耗对应的带宽约为4.42 GHz (13.58 GHz ~ 18.00 GHz),明显优于CNTs、PANI和PANI/CNTs。我们将增强的微波吸收性能归因于排列聚苯胺独特的有序结构。关键词:排列聚碳纳米管纳米复合材料微波吸收特性披露声明作者未报告潜在利益冲突。本研究受中国消防救援研究所(No. 1)“电气火灾事故现场烟气净化可行性研究”项目资助。XFKYB202310)。
{"title":"Investigation of microwave-absorbing properties of aligned polyaniline/multi-walled carbon nanotubes nanocomposites","authors":"Zhaonan Sun, Fanghui Wang, Linghan Kong","doi":"10.1080/1536383x.2023.2264994","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2264994","url":null,"abstract":"AbstractA aligned polyaniline/carbon nanotubes (a-PANI/CNTs) nanocomposite was synthesized by in situ polymerization. The structural and the microwave-absorbing properties of the a-PANI/CNTs nanocomposites were studied. Transmission electron microscopy, X-ray diffraction and Raman spectra were carried out to confirm the formation of a vertically grown PANI array on the surface of the CNTs. With a matching thickness of 1.5 mm, the a-PANI/CNTs had a maximum reflection loss of about −29.49 dB. Moreover, the bandwidth corresponding to reflection loss below −10 dB was about 4.42 GHz (13.58 GHz to 18.00 GHz), which is significantly better than those of CNTs, PANI and PANI/CNTs. We ascribed the enhanced microwave-absorbing properties to the unique ordered structure of aligned PANI.Keywords: Aligned PANIcarbon nanotubesnanocompositesmicrowave-absorbing properties Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work is supported by the program of “Feasibility study of on-site smoke purification for electrical fire incidents” by China Fire And Rescue Institute (No. XFKYB202310).","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"7 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136376839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of carbon graphene flakes enriched PCM on partial charging conditions for cool thermal energy storage system applications 富碳石墨烯片对冷蓄热系统部分充电条件的影响
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-26 DOI: 10.1080/1536383x.2023.2273417
Malarmannan Subramaniyan, Chandrasekaran Ponnusamy
{"title":"Influence of carbon graphene flakes enriched PCM on partial charging conditions for cool thermal energy storage system applications","authors":"Malarmannan Subramaniyan, Chandrasekaran Ponnusamy","doi":"10.1080/1536383x.2023.2273417","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2273417","url":null,"abstract":"","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of the trinary discretization method for the structural analysis of natural disordered sp 2 carbon 三元离散化方法在天然无序sp - 2碳结构分析中的应用
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-26 DOI: 10.1080/1536383x.2023.2273416
Igor V. Antonets, Yevgeny A. Golubev, Vladimir I. Shcheglov
{"title":"Application of the trinary discretization method for the structural analysis of natural disordered sp <sup>2</sup> carbon","authors":"Igor V. Antonets, Yevgeny A. Golubev, Vladimir I. Shcheglov","doi":"10.1080/1536383x.2023.2273416","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2273416","url":null,"abstract":"","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solid state debromination of C 60 Br 24 back to C 60 with cesium iodide: kinetics, thermodynamics and mechanism c60b24用碘化铯固相脱溴制c60:动力学、热力学和机理
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-24 DOI: 10.1080/1536383x.2023.2273978
Ransel Barzaga, D. Aníbal García-Hernández, Arturo Manchado, Franco Cataldo
AbstractThe bromofullerene C60Br24 undergoes a complete and quantitative debromination to C60 when it is mixed and ground in the solid state with cesium iodide (CsI). The kinetics of this unique solid state debromination reaction was studied with FT-IR spectroscopy on C60Br24 embedded in CsI pellet. The debromination rate constant was measured k = 8.4 x 10−4 s−1 and found independent from the C60Br24 concentration. Chemical thermodynamics calculations show that the C60Br24 debromination in CsI matrix is characterized by a largely favorable free energy of reaction (ΔGr) and the reaction is exothermal. A debromination mechanism is discussed in terms of concerted elimination of the bromide anions and formation of carbocations on the fullerene cage in agreement with the E1 type elimination reaction mechanism. The carbocations sites are reduced to radicals and stabilized as trivinylmethyl radicals (the reduction occurs by the action of iodide ions of CsI which are oxidized to molecular iodine) and then a rearrangement of the double bonds leads back to C60 quantitatively.Keywords: BromofullereneC60Br24solid state debrominationcaesium iodidekineticschemical thermodynamicsdebromination mechanism Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingWe acknowledge support from State Research Agency (AEI) of the Spanish Ministry of Science and Innovation (MICINN) under grant PID2020-115758GB-I00. This article is based upon work from COST Action NanoSpace, CA21126, supported by COST (European Cooperation in Science and Technology).
摘要溴富勒烯C60Br24与碘化铯(CsI)固体混合研磨后,发生了完全的、定量的脱溴反应。采用红外光谱法研究了C60Br24固相脱溴反应的动力学。测定了脱溴速率常数k = 8.4 x 10−4 s−1,发现脱溴速率常数与C60Br24浓度无关。化学热力学计算表明,C60Br24在CsI基体中的脱溴反应具有良好的自由能(ΔGr),反应为放热反应。从溴离子的协同消除和富勒烯笼上形成碳阳离子的角度讨论了一种符合E1型消除反应机理的脱溴机理。碳正离子被还原为自由基并稳定为三乙烯基甲基自由基(还原是通过CsI的碘离子氧化成分子碘而发生的),然后双键重排定量地回到C60。关键词:溴富勒烯ec60br24固态溴化碘化铯动力学化学热力学溴化机理披露声明作者未报告潜在利益冲突。我们感谢西班牙科学与创新部(MICINN)国家研究机构(AEI)在PID2020-115758GB-I00的资助下的支持。本文基于成本行动纳米空间,CA21126的工作,由成本(欧洲科学与技术合作)支持。
{"title":"Solid state debromination of C <sub>60</sub> Br <sub>24</sub> back to C <sub>60</sub> with cesium iodide: kinetics, thermodynamics and mechanism","authors":"Ransel Barzaga, D. Aníbal García-Hernández, Arturo Manchado, Franco Cataldo","doi":"10.1080/1536383x.2023.2273978","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2273978","url":null,"abstract":"AbstractThe bromofullerene C60Br24 undergoes a complete and quantitative debromination to C60 when it is mixed and ground in the solid state with cesium iodide (CsI). The kinetics of this unique solid state debromination reaction was studied with FT-IR spectroscopy on C60Br24 embedded in CsI pellet. The debromination rate constant was measured k = 8.4 x 10−4 s−1 and found independent from the C60Br24 concentration. Chemical thermodynamics calculations show that the C60Br24 debromination in CsI matrix is characterized by a largely favorable free energy of reaction (ΔGr) and the reaction is exothermal. A debromination mechanism is discussed in terms of concerted elimination of the bromide anions and formation of carbocations on the fullerene cage in agreement with the E1 type elimination reaction mechanism. The carbocations sites are reduced to radicals and stabilized as trivinylmethyl radicals (the reduction occurs by the action of iodide ions of CsI which are oxidized to molecular iodine) and then a rearrangement of the double bonds leads back to C60 quantitatively.Keywords: BromofullereneC60Br24solid state debrominationcaesium iodidekineticschemical thermodynamicsdebromination mechanism Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingWe acknowledge support from State Research Agency (AEI) of the Spanish Ministry of Science and Innovation (MICINN) under grant PID2020-115758GB-I00. This article is based upon work from COST Action NanoSpace, CA21126, supported by COST (European Cooperation in Science and Technology).","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135273285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile synthesis of high-density and vertically aligned carbon nanotube arrays on an acid treated stainless steel mesh 酸处理不锈钢网上高密度垂直排列碳纳米管阵列的简易合成
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-22 DOI: 10.1080/1536383x.2023.2270591
Yu Jiang, Jun Jie Cao, Yu Zhang, Jian Nong Wang
AbstractDirectly growing vertically aligned carbon nanotube arrays (VACNTs) on conductive substrates has shown great potential in a wide variety of applications. Among the various substrates, stainless steel (SS) possesses the advantageous features of wide availability, diverse compositions, and Fe containing, all of which are favorable for direct use as a low-cost and efficient catalytic substrate for VACNT growth. However, it is still unachieved to grow high-density VACNTs on SS in a facile way due to the lack of effective engineering strategies on the SS surface. Herein, we demonstrate a facile but efficient method to grow dense and highly VACNTs on an SS mesh by simply etching the SS mesh with an optimized HCl solution. Experimental results show that the etching can remove the chromium-rich passive layer and create highly active sites for chemical vapor deposition. In addition, it is revealed that the presence of the high-melting element of Mo in SS 316 is essential for prolonging the lifetime of active sites. Compared to the case on the SS 304 without Mo element, the VACNTs grown on SS 316 exhibit a higher purity, better alignment, higher degree of graphitization, and more importantly, large height of 80 μm.Keywords: Carbon nanotubesaligned arraysstainless steeletchingchemical vapor deposition Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe authors confirm that the data supporting the findings of this study are available within the article and its supplementary materials.Additional informationFundingThis work was supported by National Key R&D Program of China (2022YFA1200075, 2018YFA0208404), National Natural Science Foundation of China (52172089), and Innovation Program of Shanghai Municipal Education Commission.
摘要在导电衬底上直接生长垂直排列的碳纳米管阵列(VACNTs)具有广泛的应用前景。在各种底物中,不锈钢(SS)具有广泛可用性、成分多样、含铁等优势,这些都有利于直接作为低成本、高效的VACNT生长催化底物。然而,由于缺乏有效的SS表面工程策略,在SS表面上快速生长高密度vacnt仍未实现。在这里,我们展示了一种简单而有效的方法,通过简单地用优化的HCl溶液蚀刻SS网格,在SS网格上生长密度高的vacnt。实验结果表明,蚀刻可以去除富铬钝化层,形成化学气相沉积的高活性位点。结果表明,高熔点Mo元素的存在是延长活性位点寿命的重要因素。与未添加Mo元素的SS 304相比,在SS 316上生长的vacnt具有更高的纯度、更好的取向性、更高的石墨化程度,更重要的是,vacnt的高度可达80 μm。关键词:碳纳米管阵列;不锈钢蚀刻;化学气相沉积;数据可用性声明作者确认,支持本研究结果的数据可在文章及其补充材料中获得。基金资助:国家重点研发计划项目(2022YFA1200075, 2018YFA0208404)、国家自然科学基金项目(52172089)、上海市教委创新计划项目。
{"title":"Facile synthesis of high-density and vertically aligned carbon nanotube arrays on an acid treated stainless steel mesh","authors":"Yu Jiang, Jun Jie Cao, Yu Zhang, Jian Nong Wang","doi":"10.1080/1536383x.2023.2270591","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2270591","url":null,"abstract":"AbstractDirectly growing vertically aligned carbon nanotube arrays (VACNTs) on conductive substrates has shown great potential in a wide variety of applications. Among the various substrates, stainless steel (SS) possesses the advantageous features of wide availability, diverse compositions, and Fe containing, all of which are favorable for direct use as a low-cost and efficient catalytic substrate for VACNT growth. However, it is still unachieved to grow high-density VACNTs on SS in a facile way due to the lack of effective engineering strategies on the SS surface. Herein, we demonstrate a facile but efficient method to grow dense and highly VACNTs on an SS mesh by simply etching the SS mesh with an optimized HCl solution. Experimental results show that the etching can remove the chromium-rich passive layer and create highly active sites for chemical vapor deposition. In addition, it is revealed that the presence of the high-melting element of Mo in SS 316 is essential for prolonging the lifetime of active sites. Compared to the case on the SS 304 without Mo element, the VACNTs grown on SS 316 exhibit a higher purity, better alignment, higher degree of graphitization, and more importantly, large height of 80 μm.Keywords: Carbon nanotubesaligned arraysstainless steeletchingchemical vapor deposition Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe authors confirm that the data supporting the findings of this study are available within the article and its supplementary materials.Additional informationFundingThis work was supported by National Key R&D Program of China (2022YFA1200075, 2018YFA0208404), National Natural Science Foundation of China (52172089), and Innovation Program of Shanghai Municipal Education Commission.","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"31 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135463097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence mechanism of dispersion and agglomeration characteristics of micron/nano carbon dust on its combustion kinetics and explosion process 微米/纳米碳粉的分散和团聚特性对其燃烧动力学和爆炸过程的影响机理
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-19 DOI: 10.1080/1536383x.2023.2267707
Jie Mu, Qifu Bao, Shenghua Wang, Jianmiao Zhu, Xuesheng Li, Bo Jia, Xuefan Chen, Taosong Liu
AbstractDue to the widespread use of lithium-ion batteries, evaluations of the flammability and explosive characteristics of carbon dust materials as anodes require attention. Carbon dust often reaches the micron/nano scale, and dust particle state and explosion risk generated in different industrial scenarios are different, which is in urgent need of research. Nanoscale dust has relatively static coagulation properties and shows characteristics of dispersion and reagglomeration under a certain airflow. The particle size characteristics affect its thermodynamic characteristics and various consequence parameters of dust explosion. The oxidation and combustion characteristics are mainly affected by dust particle size distribution characteristics. The apparent activation energy is mainly affected by the proportion of small and medium-sized particles and pre-exponential index factor is mainly affected by the dust overall average particle size and specific surface area. The explosion consequence parameters are affected by the thermodynamic parameters, by the disturbance state, particle distribution degree of dust cloud and other factors, which affect the heat radiation and heat transfer process to some extent resulting in different explosion consequence parameters. Due to the agglomeration characteristics of nano-level dust, the minimum ignition energy and minimum ignition temperature of nano-level dust are generally smaller than that of micron level dust.Keywords: Carbon dustparticle characteristicsthermodynamic parameterexplosion parametersdispersion and agglomeration AcknowledgmentsThe authors gratefully acknowledge the financial support from the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China, the “Pioneer” and “Leading Goose” R&D Program of Zhejiang, Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province, the Key Research and Development Program of Zhejiang Province and the Public Projects of Zhejiang Province of China .CRediT authorship contribution statementJie Mu: Conceptualization, Funding acquisition, Writing-original draft. Qifu Bao: Writing-review & editing. Shenghua Wang: Conceptualization, Data curation. Xuesheng Li: Resources, Data processing. Jianmiao Zhu: Investigation, Formal analysis. Bo Jia: Project administration, Supervision, Review & editing. Xuefan Chen: Data test. Taosong Liu: Validation, Visualization.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.Additional informationFundingThis work was supported by the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China (NO. LQQ20E040001), the “Pioneer” and “Leading Goose” R&D Program of Zhejiang (NO. 2022C03162), Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province (No. 202207), the Key Research and Development Program of Zhejiang Province (
摘要随着锂离子电池的广泛应用,碳尘材料作为阳极材料的可燃性和易爆性评价值得重视。碳尘往往达到微米/纳米尺度,不同工业场景下产生的粉尘颗粒状态和爆炸危险性不同,急需研究。纳米级粉尘具有相对静态的混凝特性,在一定气流下表现出分散和再团聚的特性。粉尘粒度特性影响其热力学特性和粉尘爆炸的各种后果参数。粉尘的氧化和燃烧特性主要受粉尘粒径分布特性的影响。表观活化能主要受中小颗粒比例的影响,指前指数因子主要受粉尘总体平均粒径和比表面积的影响。爆炸后果参数受热力参数、扰动状态、粉尘云颗粒分布程度等因素的影响,在一定程度上影响热辐射和换热过程,导致爆炸后果参数不同。由于纳米级粉尘的团聚特性,纳米级粉尘的最小点火能量和最小点火温度一般小于微米级粉尘。关键词:本文作者感谢浙江省自然科学基金联合基金、浙江省“先行者”和“领雁”研发计划、浙江省安全工程与技术研究重点实验室、浙江省重点研发计划项目及浙江省公共工程项目。署名声明穆杰:立项,获资助,撰写-原稿。鲍启富:写作、评审、编辑。王盛华:概念化,数据策展。李学生:资源,数据处理。朱建淼:调查,形式分析。博佳:项目管理、监督、评审、编辑。陈雪凡:数据检验。刘涛松:验证,可视化。披露声明作者声明,他们没有已知的竞争经济利益或个人关系,可能会影响本文所报道的工作。项目资助:浙江省自然科学基金项目(NO. 5);项目编号:LQQ20E040001),浙江省“先行者”、“领头鹅”科技发展计划项目(NO. qq20e040001);2022C03162),浙江省安全工程与技术研究重点实验室(No. 202207),浙江省重点研发计划项目(No. 2022C03162);项目资助:2021C03151)和浙江省公共工程项目(NO. 2021C03151);LGG21G010001)。
{"title":"Influence mechanism of dispersion and agglomeration characteristics of micron/nano carbon dust on its combustion kinetics and explosion process","authors":"Jie Mu, Qifu Bao, Shenghua Wang, Jianmiao Zhu, Xuesheng Li, Bo Jia, Xuefan Chen, Taosong Liu","doi":"10.1080/1536383x.2023.2267707","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2267707","url":null,"abstract":"AbstractDue to the widespread use of lithium-ion batteries, evaluations of the flammability and explosive characteristics of carbon dust materials as anodes require attention. Carbon dust often reaches the micron/nano scale, and dust particle state and explosion risk generated in different industrial scenarios are different, which is in urgent need of research. Nanoscale dust has relatively static coagulation properties and shows characteristics of dispersion and reagglomeration under a certain airflow. The particle size characteristics affect its thermodynamic characteristics and various consequence parameters of dust explosion. The oxidation and combustion characteristics are mainly affected by dust particle size distribution characteristics. The apparent activation energy is mainly affected by the proportion of small and medium-sized particles and pre-exponential index factor is mainly affected by the dust overall average particle size and specific surface area. The explosion consequence parameters are affected by the thermodynamic parameters, by the disturbance state, particle distribution degree of dust cloud and other factors, which affect the heat radiation and heat transfer process to some extent resulting in different explosion consequence parameters. Due to the agglomeration characteristics of nano-level dust, the minimum ignition energy and minimum ignition temperature of nano-level dust are generally smaller than that of micron level dust.Keywords: Carbon dustparticle characteristicsthermodynamic parameterexplosion parametersdispersion and agglomeration AcknowledgmentsThe authors gratefully acknowledge the financial support from the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China, the “Pioneer” and “Leading Goose” R&D Program of Zhejiang, Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province, the Key Research and Development Program of Zhejiang Province and the Public Projects of Zhejiang Province of China .CRediT authorship contribution statementJie Mu: Conceptualization, Funding acquisition, Writing-original draft. Qifu Bao: Writing-review & editing. Shenghua Wang: Conceptualization, Data curation. Xuesheng Li: Resources, Data processing. Jianmiao Zhu: Investigation, Formal analysis. Bo Jia: Project administration, Supervision, Review & editing. Xuefan Chen: Data test. Taosong Liu: Validation, Visualization.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.Additional informationFundingThis work was supported by the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China (NO. LQQ20E040001), the “Pioneer” and “Leading Goose” R&D Program of Zhejiang (NO. 2022C03162), Key Laboratory of Safety Engineering and Technology Research of Zhejiang Province (No. 202207), the Key Research and Development Program of Zhejiang Province (","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135730451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrothermal carbonization of biomass: a commentary 生物质的水热碳化:评述
4区 材料科学 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-10-19 DOI: 10.1080/1536383x.2023.2270089
Aiman Hakin Supee, Muhammad Abbas Ahmad Zaini
AbstractHydrothermal carbonization (HTC) is a thermochemical conversion method to upgrade the raw biomass into carbon-rich material, which is known as hydrochar. This commentary will focus on the applications of hydrochar in wastewater treatment. Hydrochar has been widely used as an adsorbent for the removal of water pollutants; however, owing to its poor porous texture and small surface area, it is usually converted through an activation process, which yields an activated carbon with superior physicochemical properties and adsorption capacities. While HTC is proven to be beneficial, the current limitations of HTC as a pretreatment prior to activated carbon production are also incorporated to provide insight into its usage during the activation process.Keywords: Activated carbonAdsorbentHydrocharHydrothermal carbonizationOxygenated functional groupsWater pollutant Disclosure statementAuthors have no conflict of interest to disclose.Additional informationFundingThis work was partly funded by UTM ICONIC No. 09G54 and Ministry of Higher Education, Malaysia.
摘要:氢热碳化(HTC)是一种将生物质原料转化为富碳物质的热化学转化方法,即碳氢化合物。这篇评论将集中讨论碳氢化合物在废水处理中的应用。碳氢化合物作为一种吸附剂已被广泛用于去除水污染物;然而,由于其多孔结构差,表面积小,通常通过活化过程进行转化,从而得到具有优越物理化学性质和吸附能力的活性炭。虽然HTC已被证明是有益的,但目前HTC作为活性炭生产前预处理的局限性也被纳入其中,以深入了解其在活化过程中的使用情况。关键词:活性炭吸附剂氢碳水热碳化含氧官能团水污染物披露声明作者无利益冲突需披露本研究部分由UTM ICONIC No. 09G54和马来西亚高等教育部资助。
{"title":"Hydrothermal carbonization of biomass: a commentary","authors":"Aiman Hakin Supee, Muhammad Abbas Ahmad Zaini","doi":"10.1080/1536383x.2023.2270089","DOIUrl":"https://doi.org/10.1080/1536383x.2023.2270089","url":null,"abstract":"AbstractHydrothermal carbonization (HTC) is a thermochemical conversion method to upgrade the raw biomass into carbon-rich material, which is known as hydrochar. This commentary will focus on the applications of hydrochar in wastewater treatment. Hydrochar has been widely used as an adsorbent for the removal of water pollutants; however, owing to its poor porous texture and small surface area, it is usually converted through an activation process, which yields an activated carbon with superior physicochemical properties and adsorption capacities. While HTC is proven to be beneficial, the current limitations of HTC as a pretreatment prior to activated carbon production are also incorporated to provide insight into its usage during the activation process.Keywords: Activated carbonAdsorbentHydrocharHydrothermal carbonizationOxygenated functional groupsWater pollutant Disclosure statementAuthors have no conflict of interest to disclose.Additional informationFundingThis work was partly funded by UTM ICONIC No. 09G54 and Ministry of Higher Education, Malaysia.","PeriodicalId":12574,"journal":{"name":"Fullerenes, Nanotubes and Carbon Nanostructures","volume":"9 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135779701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Fullerenes, Nanotubes and Carbon Nanostructures
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1