Pub Date : 2025-09-01DOI: 10.1088/1742-6596/3102/1/012018
Xin Cai, Yuling Shan
Abstract This study synthesized B-S-1 supports with varying boron contents using two distinct methods: hydrothermal crystallization and microwave heating. Comprehensive characterization via XRD, FT-IR, Raman, and UV-vis spectroscopy verified the successful incorporation and framework crystallization of boron atoms within the S-1 structure. The boron-modified supports were then used to synthesize vanadium-based catalysts, which were evaluated for their performance in propane dehydrogenation. Results revealed that catalysts with a Si/B molar ratio of 20 exhibited the highest activity. Additionally, boron incorporation significantly enhanced the catalyst’s operational stability during prolonged reaction periods.
{"title":"Enhancing catalytic performance in propane dehydrogenation via boron-doped Silicalite-1 framework modifications","authors":"Xin Cai, Yuling Shan","doi":"10.1088/1742-6596/3102/1/012018","DOIUrl":"https://doi.org/10.1088/1742-6596/3102/1/012018","url":null,"abstract":"Abstract This study synthesized B-S-1 supports with varying boron contents using two distinct methods: hydrothermal crystallization and microwave heating. Comprehensive characterization via XRD, FT-IR, Raman, and UV-vis spectroscopy verified the successful incorporation and framework crystallization of boron atoms within the S-1 structure. The boron-modified supports were then used to synthesize vanadium-based catalysts, which were evaluated for their performance in propane dehydrogenation. Results revealed that catalysts with a Si/B molar ratio of 20 exhibited the highest activity. Additionally, boron incorporation significantly enhanced the catalyst’s operational stability during prolonged reaction periods.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3102 1","pages":"012018-012018"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1088/1742-6596/3048/1/012063
Lei Shi, Rongbo Ma, Zifan Ma, Chuanxian Li, Fei Yang, Bo Yao
Abstract In the process of crude oil transportation, the waxy crude oil pipeline inevitably needs to be shut down for maintenance or due to accidents, and then restarted. The waxy crude oil thermal conductivity is an important parameter for calculating the temperature drop during shutdown. In this study, the PPD was added to regulate the wax precipitation of waxy oil, and the influence of wax crystal morphology on the thermal conductivity of waxy oil was explored. The results indicate that as the dosage of PPD increases, the wax crystal size enlarges, the aspect ratio decreases, and the thermal conductivity of waxy oil significantly decreases. The mechanism by which PPD reduces the thermal conductivity of waxy oil was investigated through micro-photograph analysis of wax crystals and molecular dynamics simulations. From the perspective of wax crystal scale, changes in morphology help reduce the overlap of wax crystals, which not only lowers the pour point of waxy oil but also inhibits the thermal conduction pathways between wax crystals. From the molecular scale, the co-crystallization of PPD and wax molecules reduces the crystallinity of paraffin wax, leading to lattice defects that cause phonon scattering and thus decrease the thermal conductivity of the system. The results are of significant importance for ensuring the safety of shutdown and restart of waxy crude oil pipelines.
{"title":"Research on Effect of Wax Precipitation on Waxy Oil Thermal Conductivity","authors":"Lei Shi, Rongbo Ma, Zifan Ma, Chuanxian Li, Fei Yang, Bo Yao","doi":"10.1088/1742-6596/3048/1/012063","DOIUrl":"https://doi.org/10.1088/1742-6596/3048/1/012063","url":null,"abstract":"Abstract In the process of crude oil transportation, the waxy crude oil pipeline inevitably needs to be shut down for maintenance or due to accidents, and then restarted. The waxy crude oil thermal conductivity is an important parameter for calculating the temperature drop during shutdown. In this study, the PPD was added to regulate the wax precipitation of waxy oil, and the influence of wax crystal morphology on the thermal conductivity of waxy oil was explored. The results indicate that as the dosage of PPD increases, the wax crystal size enlarges, the aspect ratio decreases, and the thermal conductivity of waxy oil significantly decreases. The mechanism by which PPD reduces the thermal conductivity of waxy oil was investigated through micro-photograph analysis of wax crystals and molecular dynamics simulations. From the perspective of wax crystal scale, changes in morphology help reduce the overlap of wax crystals, which not only lowers the pour point of waxy oil but also inhibits the thermal conduction pathways between wax crystals. From the molecular scale, the co-crystallization of PPD and wax molecules reduces the crystallinity of paraffin wax, leading to lattice defects that cause phonon scattering and thus decrease the thermal conductivity of the system. The results are of significant importance for ensuring the safety of shutdown and restart of waxy crude oil pipelines.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3048 1","pages":"012063-012063"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1088/1742-6596/3112/1/012012
Huilong Yan, Yaxiong Zhao, Yuyue Peng, Xiaoqing Gong, Jinliang Yan
Abstract The investigation of shear resistance of ionic liquids (ILs) on solid surfaces represents a significant scientific challenge in the advancement of slippery liquid infused porous surfaces (SLIPS). This study systematically examines the shear resistance and underlying mechanisms at the interface between the ILs and zwitterionic surface under shear load, employing a combination of molecular dynamics (MD) simulations and experimental methodologies. Shear resistance assessments were performed utilizing a spin coater at varying rotational velocities, and an MD model comprising over 6000 atoms was developed to explore the bonding force of ILs and solids. Experimental findings reveal that the shear resistance of the IL samples at the interface markedly exceeds that of conventional SLIPS. The MD results reveal that the electrostatic force, estimated at around -600 kcal·mol −1 , between the zwitterionic surface and the ILs plays a crucial role in enhancing the adhesion of the ILs to the substrate.
{"title":"The experimental and molecular dynamics investigation of shear resistance in ionic liquids at zwitterionic surfaces","authors":"Huilong Yan, Yaxiong Zhao, Yuyue Peng, Xiaoqing Gong, Jinliang Yan","doi":"10.1088/1742-6596/3112/1/012012","DOIUrl":"https://doi.org/10.1088/1742-6596/3112/1/012012","url":null,"abstract":"Abstract The investigation of shear resistance of ionic liquids (ILs) on solid surfaces represents a significant scientific challenge in the advancement of slippery liquid infused porous surfaces (SLIPS). This study systematically examines the shear resistance and underlying mechanisms at the interface between the ILs and zwitterionic surface under shear load, employing a combination of molecular dynamics (MD) simulations and experimental methodologies. Shear resistance assessments were performed utilizing a spin coater at varying rotational velocities, and an MD model comprising over 6000 atoms was developed to explore the bonding force of ILs and solids. Experimental findings reveal that the shear resistance of the IL samples at the interface markedly exceeds that of conventional SLIPS. The MD results reveal that the electrostatic force, estimated at around -600 kcal·mol −1 , between the zwitterionic surface and the ILs plays a crucial role in enhancing the adhesion of the ILs to the substrate.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3112 1","pages":"012012-012012"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1088/1742-6596/3112/1/012012/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-01DOI: 10.1088/1742-6596/3084/1/012026
Jian Li, Xinwei Wang, Pai Lv, Yifeng Duan, Hui Cheng, S. Wang, Gang Li
Abstract To enhance the gravimetric specific capacity of Lithium-Sulfur battery electrodes, it is significant to develop a host material capable of accommodating sufficient sulfur. This host not only provides a space for binding of Li and S elements, but also effectively suppresses the dissolution of lithium polysulfide in the electrolyte, avoiding capacity loss. Herein, a composite carrier consisting of CeO 2 nanoparticles, sulfur, and Ti 3 C 2 T F was prepared through the hydrothermal method and the ball-milling method. This hierarchical structure enables efficient sulfur entrapment and dynamic storage. Benefiting from these structural advantages, the composite with 60.2 wt% sulfur exhibits an outstanding initial discharge capacity of 1714.57 mAh g ‐1 at 1C. Remarkably, after 1000 cycles, it maintains a reversible capacity of 1714.41 mAh g ‐1 , corresponding to a capacity retention of 99.94%. The composite material incorporating carbon nanotubes (CNTs) offers a higher initial discharge capacity (2211.28 mAh g ‐1 ), yet under identical cycling conditions, its capacity retention rate is 99.92% (2209.55 mAh g ‐1 ).
为了提高锂硫电池电极的重量比容量，开发一种能够容纳足够硫的主体材料具有重要意义。该寄主不仅为Li和S元素的结合提供了空间，而且有效抑制了多硫化锂在电解液中的溶解，避免了容量损失。本文通过水热法和球磨法制备了由ceo2纳米颗粒、硫和ti3c2tf组成的复合载体。这种分层结构使有效的硫捕获和动态存储成为可能。得益于这些结构优势，含硫60.2 wt%的复合材料在1C下表现出1714.57 mAh g‐1的卓越初始放电容量。值得注意的是，经过1000次循环后，它保持了1714.41 mAh g‐1的可逆容量，相当于99.94%的容量保持率。含有碳纳米管（CNTs）的复合材料提供了更高的初始放电容量（2211.28 mAh g‐1），而在相同的循环条件下，其容量保持率为99.92% （2209.55 mAh g‐1）。
{"title":"Coral structure nano micro-mesoporous sphere as an effective host for Li-S batteries","authors":"Jian Li, Xinwei Wang, Pai Lv, Yifeng Duan, Hui Cheng, S. Wang, Gang Li","doi":"10.1088/1742-6596/3084/1/012026","DOIUrl":"https://doi.org/10.1088/1742-6596/3084/1/012026","url":null,"abstract":"Abstract To enhance the gravimetric specific capacity of Lithium-Sulfur battery electrodes, it is significant to develop a host material capable of accommodating sufficient sulfur. This host not only provides a space for binding of Li and S elements, but also effectively suppresses the dissolution of lithium polysulfide in the electrolyte, avoiding capacity loss. Herein, a composite carrier consisting of CeO 2 nanoparticles, sulfur, and Ti 3 C 2 T F was prepared through the hydrothermal method and the ball-milling method. This hierarchical structure enables efficient sulfur entrapment and dynamic storage. Benefiting from these structural advantages, the composite with 60.2 wt% sulfur exhibits an outstanding initial discharge capacity of 1714.57 mAh g ‐1 at 1C. Remarkably, after 1000 cycles, it maintains a reversible capacity of 1714.41 mAh g ‐1 , corresponding to a capacity retention of 99.94%. The composite material incorporating carbon nanotubes (CNTs) offers a higher initial discharge capacity (2211.28 mAh g ‐1 ), yet under identical cycling conditions, its capacity retention rate is 99.92% (2209.55 mAh g ‐1 ).","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3084 1","pages":"012026-012026"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-01DOI: 10.1088/1742-6596/3061/1/012026
Yue Yin, Runbo Zhang, Weiping Wu, Zhiqing Liang, Jinliang Li, Geng Li, Jeffrey Xu Yu, Xiaoru Gao, Xingwei Du, Haipeng Wu, Yunlong Sun, Jun Li
Abstract MXene (Ti 3 C 2 T x ) nanosheets were synthesised by selective etching of the Ti 3 AlC 2 MAX phase and subsequently incorporated into polyethylene terephthalate (PET) via solution blending to afford PET/MXene nanocomposites. Owing to their high specific surface area and abundant surface terminations, MXene sheets acted as efficient heterogeneous nucleation sites within the PET matrix. Consequently, the crystallisation peak temperature ( T c ) of the nanocomposite containing 1 wt % MXene (PET-MX-1) rose from 186.4 °C to 212.6 °C and the overall crystallisation rate was markedly accelerated with respect to neat PET. Non-isothermal kinetic analysis confirmed that MXene lowered the apparent crystallisation activation energy and thus enhanced crystallisation kinetics, while thermogravimetric measurements revealed a modest improvement in thermal stability. These findings demonstrate that the introduction of trace amounts of MXene offers a simple yet effective strategy for tailoring the crystallisation behaviour and thermal performance of PET, thereby expanding its potential for high-performance engineering applications.
{"title":"Effect of MXene as nucleating agent on crystallization behaviour and thermal stability of PET nanocomposites","authors":"Yue Yin, Runbo Zhang, Weiping Wu, Zhiqing Liang, Jinliang Li, Geng Li, Jeffrey Xu Yu, Xiaoru Gao, Xingwei Du, Haipeng Wu, Yunlong Sun, Jun Li","doi":"10.1088/1742-6596/3061/1/012026","DOIUrl":"https://doi.org/10.1088/1742-6596/3061/1/012026","url":null,"abstract":"Abstract MXene (Ti 3 C 2 T x ) nanosheets were synthesised by selective etching of the Ti 3 AlC 2 MAX phase and subsequently incorporated into polyethylene terephthalate (PET) via solution blending to afford PET/MXene nanocomposites. Owing to their high specific surface area and abundant surface terminations, MXene sheets acted as efficient heterogeneous nucleation sites within the PET matrix. Consequently, the crystallisation peak temperature ( T c ) of the nanocomposite containing 1 wt % MXene (PET-MX-1) rose from 186.4 °C to 212.6 °C and the overall crystallisation rate was markedly accelerated with respect to neat PET. Non-isothermal kinetic analysis confirmed that MXene lowered the apparent crystallisation activation energy and thus enhanced crystallisation kinetics, while thermogravimetric measurements revealed a modest improvement in thermal stability. These findings demonstrate that the introduction of trace amounts of MXene offers a simple yet effective strategy for tailoring the crystallisation behaviour and thermal performance of PET, thereby expanding its potential for high-performance engineering applications.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3061 1","pages":"012026-012026"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-01DOI: 10.1088/1742-6596/3080/1/012155
Wencheng Liu, Yuanrong Lu, Xiaoyang Shi, Z. Rong, Yunfei Li, Zhenyu Liu, Lei Liu, Zheng Wang, Chuanyong Wang, Wenbo Dong, Hu Li
Abstract Developing low-cost, highly operable, and facilely fabricated bifunctional catalysts is essential for advancing zinc-air batteries (ZABs). In this study, Co 3 O 4 nanosheets were synthesized on carbon cloth (CC) via a simple electrodeposition method. The introduction of H 2 O 2 and ethylene glycol created a porous structure, generating defect sites that enhance catalytic performance. The Co 3 O 4 /CC catalyst demonstrates outstanding bifunctional activity, achieving an activity parameter of 0.91 V, which is comparable to that of commercial Pt/C (0.905 V) and RuO 2 (0.912 V). Additionally, it exhibits an ORR onset potential of 0.946 V and a half-wave potential of 0.837 V, as well as an OER onset potential of 1.747 V. These results demonstrate the potential of Co 3 O 4 /CC as a promising catalyst for rechargeable ZABs, indicating its strong potential for application in advanced energy storage technologies.
{"title":"In situ electrodeposited porous Co<sub>3</sub>O<sub>4</sub> nanosheets on carbon cloth for high-performance bifunctional catalysis in zinc-air batteries","authors":"Wencheng Liu, Yuanrong Lu, Xiaoyang Shi, Z. Rong, Yunfei Li, Zhenyu Liu, Lei Liu, Zheng Wang, Chuanyong Wang, Wenbo Dong, Hu Li","doi":"10.1088/1742-6596/3080/1/012155","DOIUrl":"https://doi.org/10.1088/1742-6596/3080/1/012155","url":null,"abstract":"Abstract Developing low-cost, highly operable, and facilely fabricated bifunctional catalysts is essential for advancing zinc-air batteries (ZABs). In this study, Co 3 O 4 nanosheets were synthesized on carbon cloth (CC) via a simple electrodeposition method. The introduction of H 2 O 2 and ethylene glycol created a porous structure, generating defect sites that enhance catalytic performance. The Co 3 O 4 /CC catalyst demonstrates outstanding bifunctional activity, achieving an activity parameter of 0.91 V, which is comparable to that of commercial Pt/C (0.905 V) and RuO 2 (0.912 V). Additionally, it exhibits an ORR onset potential of 0.946 V and a half-wave potential of 0.837 V, as well as an OER onset potential of 1.747 V. These results demonstrate the potential of Co 3 O 4 /CC as a promising catalyst for rechargeable ZABs, indicating its strong potential for application in advanced energy storage technologies.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3080 1","pages":"012155-012155"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1088/1742-6596/3080/1/012155/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-07-01DOI: 10.1088/1742-6596/3067/1/012082
Fengxiang Guo, Huibin Zou
Abstract In engineering applications, adsorption is widely employed to recover isoprene from fermentation off-gases. However, the water vapor in fermentation offgases results in competitive adsorption between water molecules and isoprene, leading to significant deterioration in adsorption performance. This study selected activated carbon (AC) as the adsorbent material for isoprene recovery. CuO NPs were synthesized using the thermal reflux method, and the activated carbon (AC) was combined with copper oxide nanoparticles (CuO NPs) to enhance its hydrophobic properties. Systematic investigations including material characterization and dynamic adsorption of isoprene were carried out across a relative humidity range from 0% to 80%. The results indicated that the water contact angle of AC/CuO NPs was 92.5°, and its specific surface area was 789.53 m 2 /g. At elevated humidity, the saturated isoprene adsorption capacity of the modified AC reached 159.26 mg/g, achieving a saturated adsorption rate of 15.9%, which represents an effective adsorption of isoprene. The current study demonstrates a practical to address the marked decline in adsorption capacity under high humidity conditions, providing practical insights for the efficient recovery of bioisoprene.
{"title":"Copper oxide nanoparticles modified activated carbon toward the recovery of bioisoprene","authors":"Fengxiang Guo, Huibin Zou","doi":"10.1088/1742-6596/3067/1/012082","DOIUrl":"https://doi.org/10.1088/1742-6596/3067/1/012082","url":null,"abstract":"Abstract In engineering applications, adsorption is widely employed to recover isoprene from fermentation off-gases. However, the water vapor in fermentation offgases results in competitive adsorption between water molecules and isoprene, leading to significant deterioration in adsorption performance. This study selected activated carbon (AC) as the adsorbent material for isoprene recovery. CuO NPs were synthesized using the thermal reflux method, and the activated carbon (AC) was combined with copper oxide nanoparticles (CuO NPs) to enhance its hydrophobic properties. Systematic investigations including material characterization and dynamic adsorption of isoprene were carried out across a relative humidity range from 0% to 80%. The results indicated that the water contact angle of AC/CuO NPs was 92.5°, and its specific surface area was 789.53 m 2 /g. At elevated humidity, the saturated isoprene adsorption capacity of the modified AC reached 159.26 mg/g, achieving a saturated adsorption rate of 15.9%, which represents an effective adsorption of isoprene. The current study demonstrates a practical to address the marked decline in adsorption capacity under high humidity conditions, providing practical insights for the efficient recovery of bioisoprene.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3067 1","pages":"012082-012082"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1088/1742-6596/3026/1/012062
Hongxia Wei, Lanying Wang, Kun Zou, Chunlei Li
Abstract Traditional carbonation methods have significant difficulties in synthesizing pure vaterite. Therefore, this paper proposes a bio-inspired synthesis method to prepare vaterite. The results indicate that aspartic acid (Asp), acting as a crystal-form inducer, significantly promotes the formation of vaterite. However, excessive Asp leads to noticeable agglomeration of the carbonation product particles. Asp adsorbs onto the vaterite surface to inhibit its transformation into the thermodynamically stable calcite. Moreover, Asp adsorbed on specific calcite crystal faces reduces surface energy, suppresses the growth of these faces, and induces the formation of irregular hexahedral calcite, which gradually grows into vaterite. Additionally, NH 4 OH concentration significantly affects the carbonation reaction time and product properties. When the NH 4 OH concentration exceeds 2.67 mol/L, the carbonation reaction is incomplete, with some calcite remaining unconverted to vaterite. The experiments showed that vaterite after alkali washing could remain stable in an aqueous solution for up to 12 hours. This study provides a novel approach and method for preparing highly stable vaterite through a bio-inspired method.
{"title":"Asp-NH4OH-CO2-H2O-Titanium gypsum five-element three-phase system to prepare stabilized spherical vaterite calcium carbonate","authors":"Hongxia Wei, Lanying Wang, Kun Zou, Chunlei Li","doi":"10.1088/1742-6596/3026/1/012062","DOIUrl":"https://doi.org/10.1088/1742-6596/3026/1/012062","url":null,"abstract":"Abstract Traditional carbonation methods have significant difficulties in synthesizing pure vaterite. Therefore, this paper proposes a bio-inspired synthesis method to prepare vaterite. The results indicate that aspartic acid (Asp), acting as a crystal-form inducer, significantly promotes the formation of vaterite. However, excessive Asp leads to noticeable agglomeration of the carbonation product particles. Asp adsorbs onto the vaterite surface to inhibit its transformation into the thermodynamically stable calcite. Moreover, Asp adsorbed on specific calcite crystal faces reduces surface energy, suppresses the growth of these faces, and induces the formation of irregular hexahedral calcite, which gradually grows into vaterite. Additionally, NH 4 OH concentration significantly affects the carbonation reaction time and product properties. When the NH 4 OH concentration exceeds 2.67 mol/L, the carbonation reaction is incomplete, with some calcite remaining unconverted to vaterite. The experiments showed that vaterite after alkali washing could remain stable in an aqueous solution for up to 12 hours. This study provides a novel approach and method for preparing highly stable vaterite through a bio-inspired method.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3026 1","pages":"012062-012062"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-01DOI: 10.1088/1742-6596/3018/1/012016
Liwei Wang, Qunzhi Zhu
Abstract Solar-driven interfacial evaporation is an effective and achievable way to purify water. In this paper, lignocellulosic sponge (LS), an all-natural, clean, and renewable product, is used as a porous substrate. Carbon black (CB), which has excellent photothermal conversion capability, was used as a gel material by using a simple “impregnation” method with bio-friendly polyvinyl alcohol (PVA) and tannic acid (TA), and a gel coating was generated in situ on top of the lignocellulosic sponge by hydrogen bond cross-linking regulated by water-ethanol solution to obtain a simple and effective photothermal conversion evaporator. The prepared PTLS-CB/Fe 3+ evaporator showed good light absorption with an evaporation rate of 1.93 kg m −2 h −1 in pure water and an evaporation efficiency of 84.57%. The solar evaporator prepared in this paper has the advantages of a simple preparation method and is environmentally friendly. This provides a new approach to the preparation of solar interfacial evaporators.
摘要太阳能驱动界面蒸发是一种有效且可行的水净化方法。本文以天然、清洁、可再生的木质纤维素海绵（LS）作为多孔基质。以具有优异光热转化能力的炭黑（CB）为凝胶材料，采用生物友好型聚乙烯醇（PVA）和单宁酸（TA）的简单“浸渍”方法，在木质纤维素海绵表面通过水-乙醇溶液调节的氢键交联原位生成凝胶涂层，得到简单有效的光热转化蒸发器。制备的PTLS-CB/ fe3 +蒸发器具有良好的光吸收性能，在纯水中的蒸发速率为1.93 kg m−2 h−1，蒸发效率为84.57%。本文制备的太阳能蒸发器具有制备方法简单、环保等优点。这为太阳能界面蒸发器的制备提供了一条新的途径。
{"title":"Hydrogel-coated sponge evaporator for high-efficiency desalination applications","authors":"Liwei Wang, Qunzhi Zhu","doi":"10.1088/1742-6596/3018/1/012016","DOIUrl":"https://doi.org/10.1088/1742-6596/3018/1/012016","url":null,"abstract":"Abstract Solar-driven interfacial evaporation is an effective and achievable way to purify water. In this paper, lignocellulosic sponge (LS), an all-natural, clean, and renewable product, is used as a porous substrate. Carbon black (CB), which has excellent photothermal conversion capability, was used as a gel material by using a simple “impregnation” method with bio-friendly polyvinyl alcohol (PVA) and tannic acid (TA), and a gel coating was generated in situ on top of the lignocellulosic sponge by hydrogen bond cross-linking regulated by water-ethanol solution to obtain a simple and effective photothermal conversion evaporator. The prepared PTLS-CB/Fe 3+ evaporator showed good light absorption with an evaporation rate of 1.93 kg m −2 h −1 in pure water and an evaporation efficiency of 84.57%. The solar evaporator prepared in this paper has the advantages of a simple preparation method and is environmentally friendly. This provides a new approach to the preparation of solar interfacial evaporators.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3018 1","pages":"012016-012016"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-01DOI: 10.1088/1742-6596/3008/1/012016
Ruiqi Guan, Wenxin Lai, Kai Wang
Abstract With superior physical flexibility and high sensitivity to dynamic strains, nanocomposite sensor films have shown their potential for condition monitoring of engineering structures. A newly developed nanocomposite sensor was spray-coated for in-situ structural health monitoring (SHM). The sprayed sensor was rigorously fabricated with graphene as the nanofiller and polyvinylidene fluoride copolymer (PVDF-HFP) as the matrix. The electrical conductivity of the sprayed sensor was tested to investigate its percolation threshold, and a threshold at 9.7 wt% of the graphene content of the sensor was figured out. Owing to the tunneling effect of the conductive network structure constructed by the graphene nanofillers in the matrix, the sensor demonstrated excellent capacity for receiving guided ultrasonic waves (GUWs) with a broader frequency range (20 kHz to 1 MHz) and higher sensitivity than conventional lead zirconate titanate (PZT) sensors. The sprayed nanocomposite sensor also demonstrated high repeatability, which was comparable to PZT sensors. Further investigation of the sprayed sensors for damage inspection in a GFRP plate was carried out, and the results reveal that the sprayed sensor can successfully identify damage in the plate and can be applied for in-situ GUW-based SHM.
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