Pub Date : 2024-10-16DOI: 10.1016/j.mtsust.2024.101007
Yue Mo , Junyu Chen , Yue Han, Kun Zhang, Guangxue Chen
In this work, a secondary skeleton was constructed by filling the larger spaces of porous carbon derived from passion fruit peels with glucose to created more carbon surface in same volume. The combined use of KOH activation and simultaneous etching of micropores on the carbon skeleton and secondary skeleton resulted in the preparation of porous carbon (PGC1-0.5) containing a large number of micropores. PGC1-0.5 have less total pore volume (0.987 cm3 g−1), but more micropore volume (0.821 cm3 g−1), different with 1.171 cm3 g−1, 0.668 cm3 g−1 of PGC1-0, which without glucose. Symmetric supercapacitor bases on PPGC1-0.5 have an obvious improvement in specific capacity (275.6 F g−1 (175 F cm−3), 0.1 A g−1) in 6 M KOH electrolyte compared to PGC1-0 (215.2 F g−1 (121.5 F cm−3), 0.1 A g−1). Additionally, the device exhibits excellent cycling performance and retained 103% of its specific capacity after 10,000 cycles and notable reduction in transfer internal resistance in comparison to the sample without glucose. This study shows that filling space with glucose to reduce macropores is an effective method for adjusting the pore size distribution of porous carbon.
在这项工作中，通过用葡萄糖填充从百香果皮中提取的多孔碳的较大空间来构建次骨架，从而在相同体积内形成更多的碳表面。在碳骨架和次骨架上同时使用 KOH 活化和蚀刻微孔，制备出了含有大量微孔的多孔碳（PGC1-0.5）。PGC1-0.5 的总孔隙体积（0.987 cm3 g-1）较小，但微孔体积（0.821 cm3 g-1）较大，与不含葡萄糖的 PGC1-0 的 1.171 cm3 g-1 和 0.668 cm3 g-1 不同。基于 PPGC1-0.5 的对称超级电容器在 6 M KOH 电解液中的比容量（275.6 F g-1 (175 F cm-3), 0.1 A g-1）明显高于 PGC1-0 (215.2 F g-1 (121.5 F cm-3), 0.1 A g-1)。此外，与不含葡萄糖的样品相比，该装置表现出卓越的循环性能，在循环 10,000 次后仍能保持 103% 的比容量，并显著降低了转移内阻。这项研究表明，用葡萄糖填充空间以减少大孔是调整多孔碳孔径分布的一种有效方法。
{"title":"Secondary carbon skeletons constructed in porous carbon for electric double layer capacitors","authors":"Yue Mo , Junyu Chen , Yue Han, Kun Zhang, Guangxue Chen","doi":"10.1016/j.mtsust.2024.101007","DOIUrl":"10.1016/j.mtsust.2024.101007","url":null,"abstract":"<div><div>In this work, a secondary skeleton was constructed by filling the larger spaces of porous carbon derived from passion fruit peels with glucose to created more carbon surface in same volume. The combined use of KOH activation and simultaneous etching of micropores on the carbon skeleton and secondary skeleton resulted in the preparation of porous carbon (PGC1-0.5) containing a large number of micropores. PGC1-0.5 have less total pore volume (0.987 cm<sup>3</sup> g<sup>−1</sup>), but more micropore volume (0.821 cm<sup>3</sup> g<sup>−1</sup>), different with 1.171 cm<sup>3</sup> g<sup>−1</sup>, 0.668 cm<sup>3</sup> g<sup>−1</sup> of PGC1-0, which without glucose. Symmetric supercapacitor bases on PPGC1-0.5 have an obvious improvement in specific capacity (275.6 F g<sup>−1</sup> (175 F cm<sup>−3</sup>), 0.1 A g<sup>−1</sup>) in 6 M KOH electrolyte compared to PGC1-0 (215.2 F g<sup>−1</sup> (121.5 F cm<sup>−3</sup>), 0.1 A g<sup>−1</sup>). Additionally, the device exhibits excellent cycling performance and retained 103% of its specific capacity after 10,000 cycles and notable reduction in transfer internal resistance in comparison to the sample without glucose. This study shows that filling space with glucose to reduce macropores is an effective method for adjusting the pore size distribution of porous carbon.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101007"},"PeriodicalIF":7.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.mtsust.2024.101012
Anshuman Jakhmola , Valentina Onesto , Francesco Gentile , Farshad Moradi Kashkooli , Krishnan Sathiyamoorthy , Edmondo Battista , Raffaele Vecchione , Kevin Rod , Michael C. Kolios , Jahangir (Jahan) Tavakkoli , Paolo A. Netti
In this study, we demonstrate the synthesis of small gold nanoparticles (typically 8–10 nm) through a green synthesis approach. This method involves utilizing chloroauric acid as the gold precursor, trisodium citrate as a mild reducing and co-capping agent, and polyvinyl alcohol (PVA), as a co-capping and shape-directing agent. This novel synthesis method stands alone as a protocol that involves just mixing the reagents at room temperature and allowing the reaction to proceed at ambient temperature without any disturbance. In the absence of PVA, spherical particles are not formed and the reaction mixture slowly turns black followed by precipitation.The synthesis process was meticulously tracked using time-resolved monitoring of the growth of the localized surface plasmon resonance (LSPR) by UV-vis spectroscopy and transmission electron microscopy. The as-prepared colloidal gold solution was bright red, attributed to the small size (≤10 nm) and spherical geometry of nanoparticles. This colloidal solution could be stored indefinitely at room temperature without precipitation or a change in its absorption profile. The nanoparticles remained stable in adverse conditions such as 100 mM NaCl solution, 1 × PBS and cell culture medium. Additionally, they could be easily loaded with drugs like doxorubicin by adsorption. The particles were thoroughly characterized using a range of techniques, including UV-vis spectroscopy, attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), high-resolution transmission electron microscopy (HRTEM), hyperspectral-enhanced dark field microscopy (HEDFM), dynamic light scattering (DLS), and X-ray photoelectron spectroscopy (XPS). Cell viability tests conducted on 2D cell lines and 3D spheroids revealed negligible toxicity even at high concentrations. Furthermore, we demonstrated that an advanced version of conventional diffusion-limited aggregation (DLA) schemes, which allows individual clusters to move freely within a domain to form larger aggregates, can effectively replicate the intricate interactions between chloroauric acid, trisodium citrate, and PVA, the agents involved in the synthesis of gold nanoparticles.
在本研究中，我们展示了通过绿色合成法合成小金纳米粒子（通常为 8-10 纳米）的方法。这种方法利用氯金酸作为金的前体，柠檬酸三钠作为温和的还原剂和助封端剂，聚乙烯醇（PVA）作为助封端和形状定向剂。这种新颖的合成方法只需在室温下混合试剂，让反应在环境温度下进行，不受任何干扰。通过紫外-可见光谱和透射电子显微镜对局部表面等离子体共振（LSPR）的生长进行时间分辨监测，对合成过程进行了细致的跟踪。制备的胶体金溶液呈鲜红色，这归因于纳米粒子的小尺寸（≤10 nm）和球形几何形状。这种胶体溶液可在室温下无限期保存，不会出现沉淀或吸收曲线的变化。纳米粒子在 100 mM NaCl 溶液、1 × PBS 和细胞培养基等不利条件下保持稳定。此外，它们还能通过吸附作用轻松载入多柔比星等药物。利用一系列技术对这些颗粒进行了全面的表征，包括紫外-可见光谱、衰减全反射傅立叶变换红外光谱（ATR-FTIR）、高分辨率透射电子显微镜（HRTEM）、高光谱增强暗场显微镜（HEDFM）、动态光散射（DLS）和 X 射线光电子能谱（XPS）。在二维细胞系和三维球形体上进行的细胞活力测试表明，即使在高浓度下，其毒性也可以忽略不计。此外，我们还证明了传统扩散限制聚集（DLA）方案的高级版本（允许单个团簇在域内自由移动以形成更大的聚集体）可以有效地复制金纳米粒子合成过程中所涉及的氯金酸、柠檬酸三钠和 PVA 之间错综复杂的相互作用。
{"title":"Polyvinyl alcohol assisted citrate based reduction of gold(III) ions: Theoretical design and experimental study on green synthesis of spherical and biocompatible gold nanoparticles","authors":"Anshuman Jakhmola , Valentina Onesto , Francesco Gentile , Farshad Moradi Kashkooli , Krishnan Sathiyamoorthy , Edmondo Battista , Raffaele Vecchione , Kevin Rod , Michael C. Kolios , Jahangir (Jahan) Tavakkoli , Paolo A. Netti","doi":"10.1016/j.mtsust.2024.101012","DOIUrl":"10.1016/j.mtsust.2024.101012","url":null,"abstract":"<div><div>In this study, we demonstrate the synthesis of small gold nanoparticles (typically 8–10 nm) through a green synthesis approach. This method involves utilizing chloroauric acid as the gold precursor, trisodium citrate as a mild reducing and co-capping agent, and polyvinyl alcohol (PVA), as a co-capping and shape-directing agent. This novel synthesis method stands alone as a protocol that involves just mixing the reagents at room temperature and allowing the reaction to proceed at ambient temperature without any disturbance. In the absence of PVA, spherical particles are not formed and the reaction mixture slowly turns black followed by precipitation.The synthesis process was meticulously tracked using time-resolved monitoring of the growth of the localized surface plasmon resonance (LSPR) by UV-vis spectroscopy and transmission electron microscopy. The as-prepared colloidal gold solution was bright red, attributed to the small size (≤10 nm) and spherical geometry of nanoparticles. This colloidal solution could be stored indefinitely at room temperature without precipitation or a change in its absorption profile. The nanoparticles remained stable in adverse conditions such as 100 mM NaCl solution, 1 × PBS and cell culture medium. Additionally, they could be easily loaded with drugs like doxorubicin by adsorption. The particles were thoroughly characterized using a range of techniques, including UV-vis spectroscopy, attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), high-resolution transmission electron microscopy (HRTEM), hyperspectral-enhanced dark field microscopy (HEDFM), dynamic light scattering (DLS), and X-ray photoelectron spectroscopy (XPS). Cell viability tests conducted on 2D cell lines and 3D spheroids revealed negligible toxicity even at high concentrations. Furthermore, we demonstrated that an advanced version of conventional diffusion-limited aggregation (DLA) schemes, which allows individual clusters to move freely within a domain to form larger aggregates, can effectively replicate the intricate interactions between chloroauric acid, trisodium citrate, and PVA, the agents involved in the synthesis of gold nanoparticles.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101012"},"PeriodicalIF":7.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.mtsust.2024.101006
Chunjing Su , Lizhuo Wang , Sibei Zou , Xingmo Zhang , Haoyue Sun , Xingxu Liu , Chenze Li , Yijiao Jiang , Xiaopeng Li , Jiaquan Li , Jun Huang
CO2 hydrogenation is a promising process for removing anthropogenic CO2 emissions and yielding C1 chemicals that can be utilized as fuels and valuable precursors for chemical synthesis. Commercial high-entropy alloys (HEAs) have widespread application in various fields owing to their exceptional thermal stability and tunable microstructure. However, their potential application as catalysts is often limited by the low exposure of active sites. In this study, the commercial CoCrNiFeMn powder was applied for atmospheric pressure CO2 hydrogenation and enhanced its catalytic performance by a combined treatment of ball milling and high-temperature H2 reduction. The high-energy ball milling results in a morphological transition in CoCrNiFeMn HEAs from spherical to irregular. This transformation leads to a significant decrease in particle size and more surface reactive sites. The high-temperature H2 reduction promoted the atomic rearrangement on the CoCrNiFeMn surface, thereby improving its alloy structural homogeneity. These modifications greatly improve the performance of CoCrNiFeMn for CO2 hydrogenation. This work introduces a facile modification approach to facilitate the catalytic efficiency of commercial HEAs in CO2 hydrogenation with high selectivity.
{"title":"Enhanced CO2 hydrogenation performance of CoCrNiFeMn high entropy alloys","authors":"Chunjing Su , Lizhuo Wang , Sibei Zou , Xingmo Zhang , Haoyue Sun , Xingxu Liu , Chenze Li , Yijiao Jiang , Xiaopeng Li , Jiaquan Li , Jun Huang","doi":"10.1016/j.mtsust.2024.101006","DOIUrl":"10.1016/j.mtsust.2024.101006","url":null,"abstract":"<div><div>CO<sub>2</sub> hydrogenation is a promising process for removing anthropogenic CO<sub>2</sub> emissions and yielding C1 chemicals that can be utilized as fuels and valuable precursors for chemical synthesis. Commercial high-entropy alloys (HEAs) have widespread application in various fields owing to their exceptional thermal stability and tunable microstructure. However, their potential application as catalysts is often limited by the low exposure of active sites. In this study, the commercial CoCrNiFeMn powder was applied for atmospheric pressure CO<sub>2</sub> hydrogenation and enhanced its catalytic performance by a combined treatment of ball milling and high-temperature H<sub>2</sub> reduction. The high-energy ball milling results in a morphological transition in CoCrNiFeMn HEAs from spherical to irregular. This transformation leads to a significant decrease in particle size and more surface reactive sites. The high-temperature H<sub>2</sub> reduction promoted the atomic rearrangement on the CoCrNiFeMn surface, thereby improving its alloy structural homogeneity. These modifications greatly improve the performance of CoCrNiFeMn for CO<sub>2</sub> hydrogenation. This work introduces a facile modification approach to facilitate the catalytic efficiency of commercial HEAs in CO<sub>2</sub> hydrogenation with high selectivity.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101006"},"PeriodicalIF":7.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.mtsust.2024.101009
Chenxi Hu , Liming Ge , Xi Meng
Solar radiation heat gain can lower the air-conditioning energy consumption and improve the thermal environment in winter while it is in summer. However, the traditional building skin material does not address the difference in thermal demand between winter and summer due to the constant solar reflectance. An innovative solution to this issue is the use of thermochromic materials (TCMs), which are capable of altering their colour and solar reflectance in response to temperature changes, thus aligning with the seasonal thermal requirements. Despite the potential of TCMs, a thorough analysis of their advantages and drawbacks to inform their practical application has been lacking in the literature. This review provides an overview of the classification and discolouration mechanism of TCM, performance measurement indicators and evaluation methods, and the main factors affecting the application efficiency of TCM. It provides a comprehensive account of the application efficiency of TCM in the thermal environment of urban buildings and building energy consumption. Finally, the review concludes with suggestions for future research avenues and potential applications, taking into account the limitations currently impeding the full realization of TCMs' efficiency.
{"title":"Applications of thermochromic material in opaque building envelopes: A comprehensive review","authors":"Chenxi Hu , Liming Ge , Xi Meng","doi":"10.1016/j.mtsust.2024.101009","DOIUrl":"10.1016/j.mtsust.2024.101009","url":null,"abstract":"<div><div>Solar radiation heat gain can lower the air-conditioning energy consumption and improve the thermal environment in winter while it is in summer. However, the traditional building skin material does not address the difference in thermal demand between winter and summer due to the constant solar reflectance. An innovative solution to this issue is the use of thermochromic materials (TCMs), which are capable of altering their colour and solar reflectance in response to temperature changes, thus aligning with the seasonal thermal requirements. Despite the potential of TCMs, a thorough analysis of their advantages and drawbacks to inform their practical application has been lacking in the literature. This review provides an overview of the classification and discolouration mechanism of TCM, performance measurement indicators and evaluation methods, and the main factors affecting the application efficiency of TCM. It provides a comprehensive account of the application efficiency of TCM in the thermal environment of urban buildings and building energy consumption. Finally, the review concludes with suggestions for future research avenues and potential applications, taking into account the limitations currently impeding the full realization of TCMs' efficiency.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101009"},"PeriodicalIF":7.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S-containing additives improve the performance, lifetime, and sustainability of lithium-ion batteries (LIBs) through the stabilization of electrode-electrolyte interfaces, modification of electrolyte properties, and facilitating the efficient resource utilization and rapid Li+ migration. Non-etheless, fire safety, extended shelf life, and capacity maintenance are critical concerns for commercial LIBs. Herein, a S-containing film-forming additive, including 4,4-diaminodiphenylsolfon (DADP) by incorporating flame retardancy of dimethyl methyl phosphonate (DMMP) was considered toward taking the barriers of above-mentioned challenges. Based on the calculation, the additives decompose sequentially to produce a distinct SEI via a narrower energy gap under both cathodic and anodic conditions. The NCM532||Graphite with DADP/DMMP showed the enhanced preservation and stability of structure, defined by XRD, Rietveld refinement pattern, SEM, and FT-IR. While the DMMP decreased the fire risk and lowered the capacity due to side reactions, the DADP improved the capacity loss, where the retention rate was 94.91%, 92.01%, 81.29%, and 76.22% within 100, 200, 300, and 400 cycles, respectively. The additive also maintained a capacity of 1123.115 mAhg−1 for 650 cycles, demonstrating excellent cyclability. Therefore, DADP/DMMP facilitate the formation of stable SEI layer, reduce fire risk, improve cycle stability, and offer an achievable path to develop the safe and long-lasting commercial batteries.
{"title":"Sustainable full-cell NCM||Graphite system with superior stability: The hybrid impact of sulfone-containing and flame-retardant additives on interface formation and cyclability","authors":"Fereshteh Abbasi , Mohammadreza Mansournia , Farshad Boorboor Ajdari , Abolfazl Fathollahi Zonouz","doi":"10.1016/j.mtsust.2024.101004","DOIUrl":"10.1016/j.mtsust.2024.101004","url":null,"abstract":"<div><div>S-containing additives improve the performance, lifetime, and sustainability of lithium-ion batteries (LIBs) through the stabilization of electrode-electrolyte interfaces, modification of electrolyte properties, and facilitating the efficient resource utilization and rapid Li<sup>+</sup> migration. Non-etheless, fire safety, extended shelf life, and capacity maintenance are critical concerns for commercial LIBs. Herein, a S-containing film-forming additive, including 4,4-diaminodiphenylsolfon (DADP) by incorporating flame retardancy of dimethyl methyl phosphonate (DMMP) was considered toward taking the barriers of above-mentioned challenges. Based on the calculation, the additives decompose sequentially to produce a distinct SEI via a narrower energy gap under both cathodic and anodic conditions. The NCM532||Graphite with DADP/DMMP showed the enhanced preservation and stability of structure, defined by XRD, Rietveld refinement pattern, SEM, and FT-IR. While the DMMP decreased the fire risk and lowered the capacity due to side reactions, the DADP improved the capacity loss, where the retention rate was 94.91%, 92.01%, 81.29%, and 76.22% within 100, 200, 300, and 400 cycles, respectively. The additive also maintained a capacity of 1123.115 mAhg<sup>−1</sup> for 650 cycles, demonstrating excellent cyclability. Therefore, DADP/DMMP facilitate the formation of stable SEI layer, reduce fire risk, improve cycle stability, and offer an achievable path to develop the safe and long-lasting commercial batteries.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101004"},"PeriodicalIF":7.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The conversion of lignocellulosic biomass into valuable chemicals and fuels has received considerable attention owing to the issues related to global warming. 5-Hydroxymethylfurfural (HMF) is a versatile lignocellulose-derived platform chemical used in a wide range of high-value bioproducts. However, the HMF production is completed with polymerization by which humins are inevitably formed as a by-product. Recently, the potential of humins for various applications has been explored. In this study, a series of ZSM-5 zeolite catalysts modified with iron (Fe) and tungsten (W) were used to selectively control glucose dehydration to HMF and humins. The zeolite catalysts possessing tunable bifunctional Brønsted–Lewis acid characteristics were prepared through pretreatment using a diluted nitric acid solution, followed by metal impregnation. The impregnation of Fe into ZSM-5 induced the formation of highly dispersed extraframework isolated Fe3+ ions and Fe2O3 species, which increased the content of Lewis acid sites. The W species added to ZSM-5 existed in the form of Si–OH–W linkages and polytungstates with moderate-to-strong Brønsted acidity. The selective synthesis of HMF was efficiently performed over the Fe-modified ZSM-5 catalysts. Furthermore, the W-modified catalysts exhibited potential application as novel catalysts for the selective production of humins. The controlled selectivity to each product depended on the acidic properties and Lewis/Brønsted acidity ratio of the catalysts as well as the transition metal-dependent characteristics of the Brønsted and Lewis acid sites.
由于与全球变暖有关的问题，将木质纤维素生物质转化为有价值的化学品和燃料受到了广泛关注。5-Hydroxymethylfurfural (HMF) 是一种多功能的木质纤维素衍生平台化学品，可用于多种高价值生物产品。然而，HMF 的生产是在聚合过程中完成的，聚合过程中不可避免地会产生副产品腐植质。最近，人们开始探索腐植酸的各种应用潜力。在本研究中，使用铁（Fe）和钨（W）修饰的一系列 ZSM-5 沸石催化剂选择性地控制葡萄糖脱水生成 HMF 和腐植酸。通过使用稀硝酸溶液进行预处理，然后进行金属浸渍，制备出具有可调双官能度布伦斯特-刘易斯酸特性的沸石催化剂。在 ZSM-5 中浸渍 Fe 会形成高度分散的框架外孤立 Fe3+ 离子和 Fe2O3 物种，从而增加路易斯酸位点的含量。添加到 ZSM-5 中的 W 物种以 Si-OH-W 链接和多钨酸盐的形式存在，具有中等至强的布氏酸性。在 Fe 改性的 ZSM-5 催化剂上可以高效地进行 HMF 的选择性合成。此外，W 改性催化剂作为选择性生产腐植酸的新型催化剂也具有潜在的应用价值。对每种产品的可控选择性取决于催化剂的酸性和路易斯/布氏酸度比，以及布氏酸和路易斯酸位点的过渡金属依赖特性。
{"title":"Selectivity control in catalytic glucose dehydration using iron- and tungsten-modified ZSM-5 catalysts","authors":"Thawanrat Kobkeatthawin , Nuttapat Thiensuwan , Atikhun Chotirattanachote , Supphathee Chaowamalee , Chawalit Ngamcharussrivichai","doi":"10.1016/j.mtsust.2024.101005","DOIUrl":"10.1016/j.mtsust.2024.101005","url":null,"abstract":"<div><div>The conversion of lignocellulosic biomass into valuable chemicals and fuels has received considerable attention owing to the issues related to global warming. 5-Hydroxymethylfurfural (HMF) is a versatile lignocellulose-derived platform chemical used in a wide range of high-value bioproducts. However, the HMF production is completed with polymerization by which humins are inevitably formed as a by-product. Recently, the potential of humins for various applications has been explored. In this study, a series of ZSM-5 zeolite catalysts modified with iron (Fe) and tungsten (W) were used to selectively control glucose dehydration to HMF and humins. The zeolite catalysts possessing tunable bifunctional Brønsted–Lewis acid characteristics were prepared through pretreatment using a diluted nitric acid solution, followed by metal impregnation. The impregnation of Fe into ZSM-5 induced the formation of highly dispersed extraframework isolated Fe<sup>3+</sup> ions and Fe<sub>2</sub>O<sub>3</sub> species, which increased the content of Lewis acid sites. The W species added to ZSM-5 existed in the form of Si–OH–W linkages and polytungstates with moderate-to-strong Brønsted acidity. The selective synthesis of HMF was efficiently performed over the Fe-modified ZSM-5 catalysts. Furthermore, the W-modified catalysts exhibited potential application as novel catalysts for the selective production of humins. The controlled selectivity to each product depended on the acidic properties and Lewis/Brønsted acidity ratio of the catalysts as well as the transition metal-dependent characteristics of the Brønsted and Lewis acid sites.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101005"},"PeriodicalIF":7.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-02DOI: 10.1016/j.mtsust.2024.101002
Cheng Xue , Zhanpeng Yu , Cong Qi, Maoqing Tang
Solar energy is a kind of clean energy, and the efficient usage of solar energy can effectively alleviate the challenges of lacking energy source and environment pollution, and also plays an important role in the process of realizing carbon peak and carbon neutral. For the last few years, growing maturity of the photothermal conversion technology, great breakthroughs have been achieved in the desalination field using solar energy. This paper mainly summarized the development trend of carbon-based materials, metal materials, semiconductor materials and efficient photothermal conversion technology in solar thermal evaporation systems, and analyzed the main problems in the field of photothermal conversion, such as huge cost, low efficiency and small scope of application. By comparing different kinds of photothermal conversion materials and methods, it provides useful guidance and development direction for the design of high-efficiency photothermal conversion devices in the field of photothermal conversion and seawater evaporation.
{"title":"Research progress of solar thermal evaporation materials and systems","authors":"Cheng Xue , Zhanpeng Yu , Cong Qi, Maoqing Tang","doi":"10.1016/j.mtsust.2024.101002","DOIUrl":"10.1016/j.mtsust.2024.101002","url":null,"abstract":"<div><div>Solar energy is a kind of clean energy, and the efficient usage of solar energy can effectively alleviate the challenges of lacking energy source and environment pollution, and also plays an important role in the process of realizing carbon peak and carbon neutral. For the last few years, growing maturity of the photothermal conversion technology, great breakthroughs have been achieved in the desalination field using solar energy. This paper mainly summarized the development trend of carbon-based materials, metal materials, semiconductor materials and efficient photothermal conversion technology in solar thermal evaporation systems, and analyzed the main problems in the field of photothermal conversion, such as huge cost, low efficiency and small scope of application. By comparing different kinds of photothermal conversion materials and methods, it provides useful guidance and development direction for the design of high-efficiency photothermal conversion devices in the field of photothermal conversion and seawater evaporation.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101002"},"PeriodicalIF":7.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-02DOI: 10.1016/j.mtsust.2024.101003
Fernanda R. Vieira , Sílvia Soreto Teixeira , Denis Alikin , Luís Cadillon Costa , Nuno Gama , Ana Barros-Timmons , Andrei Kholkin , Dmitry V. Evtuguin , Paula C.R. Pinto
Rigid polyurethane foams (RPUF) are mainly used as thermal insulators materials. These materials are drawing the attention of the emerging sector of the Internet of Things (IoT) due to their features such as good chemical resistance, lightweight, and tunable mechanical properties. Yet, for IoT applications, the electrical conductivity of this type of materials should be increased substantially. To address this challenge, as well as the urgency to use renewable and sustainable resources, semi-conductive RPUF were synthesized using crude lignin-based polyol (LBP) doped with multi-walled carbon nanotubes (MWCNT) and coated with PEDOT: PSS, using the dip coating technique. The ensuing semi-conductive RPUF has low density (33–34 kg/m3), high electrical conductivity (in the order of magnitude of 10−5 S/m), and a stretchability enhancement of almost 50 % upon coating with PEDOT: PSS. Furthermore, the mechanical performance of RPUFs can be adjusted using MWCNT and fine tuning of the formulation. Lignin being an abundant natural aromatic polyol allows the partial replacement of fossil derived polyols in the production of RPUFs and its aromatic structure contributes to the thermal and mechanical stability of the ensuing foams.
{"title":"A semi-conductive rigid polyurethane foam derived from kraft lignin polyol and a PEDOT: PSS coating","authors":"Fernanda R. Vieira , Sílvia Soreto Teixeira , Denis Alikin , Luís Cadillon Costa , Nuno Gama , Ana Barros-Timmons , Andrei Kholkin , Dmitry V. Evtuguin , Paula C.R. Pinto","doi":"10.1016/j.mtsust.2024.101003","DOIUrl":"10.1016/j.mtsust.2024.101003","url":null,"abstract":"<div><div>Rigid polyurethane foams (RPUF) are mainly used as thermal insulators materials. These materials are drawing the attention of the emerging sector of the Internet of Things (IoT) due to their features such as good chemical resistance, lightweight, and tunable mechanical properties. Yet, for IoT applications, the electrical conductivity of this type of materials should be increased substantially. To address this challenge, as well as the urgency to use renewable and sustainable resources, semi-conductive RPUF were synthesized using crude lignin-based polyol (LBP) doped with multi-walled carbon nanotubes (MWCNT) and coated with PEDOT: PSS, using the dip coating technique. The ensuing semi-conductive RPUF has low density (33–34 kg/m<sup>3</sup>), high electrical conductivity (in the order of magnitude of 10<sup>−5</sup> S/m), and a stretchability enhancement of almost 50 % upon coating with PEDOT: PSS. Furthermore, the mechanical performance of RPUFs can be adjusted using MWCNT and fine tuning of the formulation. Lignin being an abundant natural aromatic polyol allows the partial replacement of fossil derived polyols in the production of RPUFs and its aromatic structure contributes to the thermal and mechanical stability of the ensuing foams.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 101003"},"PeriodicalIF":7.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.mtsust.2024.100983
A. Sangeetha , S. Shanmugan , Abdulaziz Alasiri
The increasing need for sustainable methods to remove pharmaceutical contaminants like cephalexin and improve water desalination is critical. This study explores ZnO/nZVI nanoparticles synthesized with Jackfruit peel extracts as eco-friendly, cost-effective adsorbents, enhancing water purification in solar desalination systems. This work used a matte black paint coating within a double slope U-shaped solar distiller (DSUD) in a discontinuous experimental setting to examine potential improvements in solar distillation performance. Activated carbon (AC) and bioactive powdered nanoparticles of ZnO/nZVI (nano zerovalent iron), produced from jackfruit peel extracts (JP) were combined in a synergistic way. The effectiveness of cephalexin removal was assessed taking into account the JPAC solution parameters, reaction duration, ZnO/nZVI concentrations in the nanocomposite dosage, and initial nanocomposite concentration. The best conditions for cephalexin adsorption were found to be pH 5 and reaction time of 50 min, which resulted in high absorption efficiencies of 94.74% (nZVI) and 97.53% (ZnO) at room temperature with a JPAC dose of 2.50 g L⁻1. The efficiency of the eco-friendly adsorbent in getting rid of cephalexin was calculated using “pseudo-second-order kinetics” for nanocomposites, which is consistent with the “Langmuir” isothermal absorption process. The nanocomposites as absorbent materials in solar thermal desalination processes, efficient heat transmission and energy storage have been established. JPAC and the addition of steel balls (S) with a silver hue to the DSUD improved the internal heat transfer mechanisms. Thermodynamic of Gibbs free energy and the Laplacian method (TGL), two thermodynamic concepts, were used to extensively study the temperature dynamics of the DSUD with SJPAC components. For ZnO/JPAC, an exceptional distillate production rate was noted from 8:00 to 18:00, with a noteworthy 4.932 L/m2 output in winter and 5.833 L/m2 per day in summer. Using silver balls, ZnO/JPAC generated significant yields over a 24-h period: 8.957 L/m2 in summer and 7.253 L/m2 in winter, with an ideal energy efficiency of 51.05%. The unique advancements in TGL procedures and their environmental consequences are presented in this paper. The field of thermal energy transduction will advance if silver balls are used in DSUD for the synthesis of JPAC, ZnO/JPAC, and nZVI/JPAC, as supported by the theoretical insights presented here.
{"title":"ZnO/nZVI nanoparticle-enhanced double-slope U-shaped solar distillation: A thermodynamic investigation of cephalexin adsorption","authors":"A. Sangeetha , S. Shanmugan , Abdulaziz Alasiri","doi":"10.1016/j.mtsust.2024.100983","DOIUrl":"10.1016/j.mtsust.2024.100983","url":null,"abstract":"<div><div>The increasing need for sustainable methods to remove pharmaceutical contaminants like cephalexin and improve water desalination is critical. This study explores ZnO/nZVI nanoparticles synthesized with Jackfruit peel extracts as eco-friendly, cost-effective adsorbents, enhancing water purification in solar desalination systems. This work used a matte black paint coating within a double slope U-shaped solar distiller (DSUD) in a discontinuous experimental setting to examine potential improvements in solar distillation performance. Activated carbon (AC) and bioactive powdered nanoparticles of ZnO/nZVI (nano zerovalent iron), produced from jackfruit peel extracts (JP) were combined in a synergistic way. The effectiveness of cephalexin removal was assessed taking into account the JPAC solution parameters, reaction duration, ZnO/nZVI concentrations in the nanocomposite dosage, and initial nanocomposite concentration. The best conditions for cephalexin adsorption were found to be pH 5 and reaction time of 50 min, which resulted in high absorption efficiencies of 94.74% (nZVI) and 97.53% (ZnO) at room temperature with a JPAC dose of 2.50 g L⁻<sup>1</sup>. The efficiency of the eco-friendly adsorbent in getting rid of cephalexin was calculated using “pseudo-second-order kinetics” for nanocomposites, which is consistent with the “Langmuir” isothermal absorption process. The nanocomposites as absorbent materials in solar thermal desalination processes, efficient heat transmission and energy storage have been established. JPAC and the addition of steel balls (S) with a silver hue to the DSUD improved the internal heat transfer mechanisms. Thermodynamic of Gibbs free energy and the Laplacian method (TGL), two thermodynamic concepts, were used to extensively study the temperature dynamics of the DSUD with SJPAC components. For ZnO/JPAC, an exceptional distillate production rate was noted from 8:00 to 18:00, with a noteworthy 4.932 L/m<sup>2</sup> output in winter and 5.833 L/m<sup>2</sup> per day in summer. Using silver balls, ZnO/JPAC generated significant yields over a 24-h period: 8.957 L/m<sup>2</sup> in summer and 7.253 L/m<sup>2</sup> in winter, with an ideal energy efficiency of 51.05%. The unique advancements in TGL procedures and their environmental consequences are presented in this paper. The field of thermal energy transduction will advance if silver balls are used in DSUD for the synthesis of JPAC, ZnO/JPAC, and nZVI/JPAC, as supported by the theoretical insights presented here.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100983"},"PeriodicalIF":7.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-30DOI: 10.1016/j.mtsust.2024.100988
Ao Wu , Danis I. Badrtdinov , Woncheol Lee , Malte Rösner , Cyrus E. Dreyer , Maciej Koperski
The functionalities activated by defect centers in solids are constantly growing, opening new avenues for sustainable future technologies. These may extend to quantum optoelectronics if suitable defect centers are created and their properties understood. Recent progress in developing quantum emitters in hexagonal boron nitride (hBN) associated with carbon impurities enabled the realization of such concepts in atomically thin films, where the defect centers exhibit an unprecedented level of sensitivity toward the environment. The complexity of defects, together with new control knobs provided by van der Waals technology, poses a challenge for theory to accurately predict the properties of defect centers and to match them with experimental results. Here, we review the ab initio methods applied to carbon-containing defect centers in hBN, exploring the predictive capabilities of different levels of theory for their structural and optoelectronic properties.
由固体缺陷中心激活的功能不断增加，为未来可持续技术开辟了新途径。如果能创造出合适的缺陷中心并了解其特性，这些功能可能会扩展到量子光学。最近在六方氮化硼（hBN）与碳杂质的量子发射器的开发方面取得的进展，使这种概念得以在原子薄膜中实现，其中的缺陷中心对环境的敏感性达到了前所未有的水平。缺陷的复杂性以及范德瓦耳斯技术提供的新控制旋钮，对理论准确预测缺陷中心的特性并使之与实验结果相匹配提出了挑战。在此，我们回顾了应用于氢化硼中含碳缺陷中心的 ab initio 方法，探索了不同理论水平对其结构和光电特性的预测能力。
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