المؤلفون: Ning, Wenxin, Wang, Rui, Li, Xiaoxia, Wang, Ming Hua, Xu, Hao Guan, Lin, Hao Yang, Fu, Xiao Peng, Wang, Mengmin, Liu, Peng Fei, Yang, Hua Gui

مصطلحات موضوعية: Chemical sciences, Engineering, Science & Technology, Physical Sciences, Chemistry, Multidisciplinary

الوصف: In this study, ruthenium-doped CoFe-based layered double hydroxides on Ni foam (CoFe-ZLDH/Ru@NF) were fabricated via an etching-precipitation strategy. The resultant CoFe-ZLDH/Ru@NF exhibited excellent activity, showing low overpotentials of 219.8 mV and 60.9 mV to reach the current density of 10 mA cm−2 for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. As a bifunctional electrocatalyst, it was assembled in an anion exchange membrane water electrolyser (AEMWE) unit, performing as an anode and cathode simultaneously, which only required a cell voltage of 2.33 V to accomplish the industrial level current density of 1 A cm−2 and operated steadily for over 12 h, making it promising for utilization in hydrogen production. ; No Full Text

العلاقة: Chemical Communications; Ning, W; Wang, R; Li, X; Wang, MH; Xu, HG; Lin, HY; Fu, XP; Wang, M; Liu, PF; Yang, HG, Construction of a ruthenium-doped CoFe-layered double hydroxide as a bifunctional electrocatalyst for overall water splitting, Chemical Communications, 2023, 59 (79), pp. 11803-11806; http://hdl.handle.net/10072/428435Test

الإتاحة: https://doi.org/10.1039/d3cc03260dTest
http://hdl.handle.net/10072/428435Test

المؤلفون: Zhao, Jianchao, Yang, Zhengqiang, Liu, Na, Wang, Rui, Deng, Siqi, Cao, Haijie

المصدر: New Journal of Chemistry; 7/28/2024, Vol. 48 Issue 28, p12724-12732, 9p

مستخلص: The development of stable and durable oil/water separation materials with photocatalytic activity holds great significance for the purification of complex oily wastewater containing refractory organic pollutants. Herein, a multifunctional Ag@Cu2O decorated copper mesh was designed and prepared via a two-step hydrothermal method. The material possesses outstanding superwettability, photocatalytic activity, and antibacterial properties towards Escherichia coli and Staphylococcus aureus. The mesh demonstrates remarkable and durable superhydrophilic properties while maintaining underwater superoleophobic characteristics, enabling excellent separation efficiency and high permeability flux involving various oil/water mixtures in gravity-driven separation processes. Under visible light, the Ag@Cu2O anchored mesh serves as an effective photocatalyst in the removal of dyes and tetracycline antibiotics from aqueous solution. The catalyst shows high stability and reusability and exhibits high performance after 5 cycles of photocatalytic tests. Density functional theory calculations reveal that the improved photocatalytic performance is attributed to the narrowed indirect band gap after Ag anchoring. The silver atoms induce the shifting up of the energy level of the Cu 3d orbital, enhancing the photocatalytic activity of Cu2O. The outstanding performance of the Ag@Cu2O anchored mesh endows this material with great application potential in the removal of refractory pollutants from oily wastewater. [ABSTRACT FROM AUTHOR]

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المؤلفون: He, Ze, Huang, Wei, Xiong, Fangyu, Tan, Shuangshuang, Wu, Tianhao, Wang, Rui, Ducati, Caterina, De Volder, Michael, An, Qinyou

المصدر: Chemical Communications; 7/11/2024, Vol. 60 Issue 54, p6847-6859, 13p

مصطلحات موضوعية: ANODES, HYDROGEN evolution reactions, SOLID electrolytes, ENERGY storage, ZINC ions, ELECTROLYTES

مستخلص: Zinc ion batteries (ZIBs) have emerged as promising candidates for renewable energy storage owing to their affordability, safety, and sustainability. However, issues with Zn metal anodes, such as dendrite growth, hydrogen evolution reaction (HER), and corrosion, significantly hinder the practical application of ZIBs. To address these issues, organic solid electrolyte interface (SEI) layers have gained traction in the ZIB community as they can, for instance, help achieve uniform Zn plating/stripping and suppress side reactions. This article summarizes recent advances in organic artificial SEI layers for ZIB anodes, including their fabrication methods, electrochemical performance, and degradation suppression mechanisms. [ABSTRACT FROM AUTHOR]

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المؤلفون: Yao, Yijing, Zheng, Yiwen, Wu, Mingtai, Gao, Yihui, Yu, Qian, Liu, Mengyao, Luo, Xiaoxiao, Wang, Rui, Jiang, Lixin

المصدر: Journal of Materials Chemistry B; 6/28/2024, Vol. 12 Issue 24, p5884-5897, 14p

مستخلص: Pancreatic cancer is an aggressive and highly fatal malignant tumor. Recent studies have shown that cancer stem cells (CSCs) play an important role in resisting current therapeutic modalities. Furthermore, CD133 is highly expressed in CSCs. High-intensity focused ultrasound (HIFU) is a promising non-invasive therapeutic strategy for unresectable pancreatic cancers. In our study, we synthesized targeted CD133 organosilane nanomicelles by encapsulating perfluorohexane (PFH). The CD133 antibody on the surface could specifically bind to CD133-positive pancreatic cancer cells and selectively concentrate in pancreatic cancer tumor tissues. PFH was introduced to improve the ablation effect of HIFU due to its liquid–gas phase transition properties. By combining with the dorsal skinfold window chamber model (DSWC) of pancreatic cancer in nude mice, multiphoton fluorescence microscopy was used to evaluate the targeting effect of nanomicelles on pancreatic cancer tumor tissue. These multifunctional nanomicelles synergistically affected HIFU treatment of pancreatic cancer, providing an integrated research platform for diagnosing and treating pancreatic cancer with HIFU. [ABSTRACT FROM AUTHOR]

: Copyright of Journal of Materials Chemistry B is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Huang, Xue-chun, Chen, Xiao-juan, Meng, Yan, Wang, Rui-xiang, Tan, Guang-qun, Xiao, Dan

المصدر: New Journal of Chemistry; 6/28/2024, Vol. 48 Issue 24, p10809-10813, 5p

مصطلحات موضوعية: SODIUM ions, ELECTROLYTES, ANODES, CARBON, STORAGE batteries

مستخلص: A compatible non-flammable electrolyte to hard carbon anodes is developed for sodium ion batteries. In contrast to the adsorption-dominant behaviour in conventional carbonate electrolytes, the weak-solvating NaFSI/TFEP electrolyte with robust anion-derived SEI presents a dramatically decreased desodiation barrier. The Na/HC half-cell in NaFSI/TFEP displays high reversible capacity (246.6 mA h g⁻¹ at 0.2 C) and long-term cycling stability over 400 cycles without capacity decay. [ABSTRACT FROM AUTHOR]

: Copyright of New Journal of Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Wu, Qi, Lin, YangRui, Ou, Yangwenting, Wang, Changhua, Ma, He, Wang, Rui, Li, Yuanyuan, Zhang, Xintong

المصدر: Journal of Materials Chemistry A; 6/28/2024, Vol. 12 Issue 24, p14302-14333, 32p

مستخلص: The exploration and functionalization of two-dimensional (2D) materials have opened new horizons in the fields of catalysis and materials science. Therein, 2D non-metallic nitrides have attracted significant attention due to the easy availability of material sources, versatile materials modification methods, and exceptional physicochemical properties. This review focuses on recent advances in the modification of carbon/boron nitride (CBN) and the critical role played by machine learning (ML) techniques because ML enables rapid screening and optimization of materials properties that would be infeasible with traditional experimental methodologies alone. The structural and electronic modifications of CBN materials are introduced, followed by an investigation of the direct relationship between doping, defect engineering, and the resulting optoelectronic properties. The mechanism behind these modifications is particularly discussed in detail using state-of-the-art computational methods. It demonstrates how the incorporation of ML into the development of 2D CBN materials can lead to significant advances in catalysis and hold promising implications for sustainable energy and environmental remediation. [ABSTRACT FROM AUTHOR]

: Copyright of Journal of Materials Chemistry A is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Liu, Jia-Bin, Zhang, Fu-Sheng, Wang, Shu-Hui, Liu, Kai-Lang, Xiao, Rui-Chun, Jin, Chen-Dong, Zhang, Hu, Lian, Ru-Qian, Wang, Rui-Ning, Gong, Peng-Lai, Shi, Xing-Qiang, Wang, Jiang-Long

المصدر: Journal of Materials Chemistry C; 6/28/2024, Vol. 12 Issue 24, p8825-8836, 12p

مستخلص: Inorganic molecular crystal films, particularly α-Sb2O3, have emerged as promising van der Waals (vdW) dielectrics for the large-scale integration of two-dimensional (2D) semiconductors in field-effect transistors (FETs) [K. L. Liu, B. Fin, W. Han, X. Chen, P. L. Gong and L. Huang, et al., Nat. Electron., 2021, 4, 906.]. Nevertheless, a notable gap exists in understanding the electronic and dielectric characteristics of few-layer α-Sb2O3 and the underlying physics governing its interaction with common 2D semiconductors. Herein, we address such issues through first-principles calculations. As the layer number increases, the electronic properties (e.g., band gap and band edges) of α-Sb2O3 exhibit minimal variations, resembling the electronic decoupling behavior, while the out-of-plane high dielectric constant significantly rises, indicating significant surface ionic behavior. These features stem from the weak interlayer quasi-bonding interaction, small atomic Born effective charge at the surface, and the influence of surface-to-volume ratio. Furthermore, exploring device physics, with a focus on complementary metal-oxide-semiconductor FETs, demonstrates that the leakage currents between the N-layer α-Sb2O3 (N ≥ 4) and all our studied 2D semiconducting channels adhere to international standards and the dielectrics with 4 and 5 layers meet the criteria for small equivalent oxide thickness. Unlike other layered vdW dielectrics, few-layer α-Sb2O3 emerges as a novel high-k vdW dielectric with exceptional dielectric performance and distinctive electronic characteristics, inspiring further exploration of inorganic molecular crystals for vdW dielectrics in integrated 2D semiconductor devices. [ABSTRACT FROM AUTHOR]

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المؤلفون: Cao, Ji, Chen, Qiaoyun, Wu, Wenting, Fu, Jianfei, Zhang, Zelong, Chen, Lei, Wang, Rui, Yu, Wei, Wang, Lijie, Nie, Xiaoting, Zhang, Jing, Zhou, Yi, Song, Bo, Li, Yongfang

المصدر: Energy & Environmental Science; 5/21/2024, Vol. 17 Issue 10, p3454-3469, 16p

المؤلفون: Zhou, Hang, Ruan, Man, Liu, Qing-Yu, Zhao, Yan-Xia, Wang, Rui-Yong, Yang, Yuan, He, Sheng-Gui

المصدر: Physical Chemistry Chemical Physics (PCCP); 5/21/2024, Vol. 26 Issue 19, p14186-14193, 8p

مستخلص: Cost-effective and readily accessible 3d transition metals (TMs) have been considered as promising candidates for alkane activation while 3d TMs especially the early TMs are usually not very reactive with light alkanes. In this study, the reactivity of Vn⁺ and VnO⁺ (n = 1–9) cluster cations towards ethane under thermal collision conditions has been investigated using mass spectrometry and density functional theory calculations. Among Vn⁺ (n = 1–9) clusters, only V3–5⁺ can react with C2H6 to generate dehydrogenation products and the reaction rate constants are below 10⁻¹³ cm³ molecule⁻¹ s⁻¹. In contrast, the reaction rate constants for all VnO⁺ (n = 1–9) with C2H6 significantly increase by about 2–4 orders of magnitude. Theoretical analysis evidences that the addition of ligand O affects the charge distribution of the metal centers, resulting in a significant increase in the cluster reactivity. The analysis of frontier orbitals indicates that the agostic interaction determines the size-dependent reactivity of VnO⁺ cluster cations. This study provides a novel approach for improving the reactivity of early 3d TMs. [ABSTRACT FROM AUTHOR]

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المؤلفون: Li, Junzhe, Wang, Chao, Wang, Rui, Zhang, Chaofeng, Li, Guanjie, Davey, Kenneth, Zhang, Shilin, Guo, Zaiping

المصدر: Chemical Society Reviews; 4/21/2024, Vol. 53 Issue 8, p4154-4229, 76p

مصطلحات موضوعية: PHASE transitions, ELECTRODES, ALKALIES, CHEMICAL synthesis, STRUCTURAL design, IRON electrodes

مستخلص: Iron-based materials with significant physicochemical properties, including high theoretical capacity, low cost and mechanical and thermal stability, have attracted research attention as electrode materials for alkali metal-ion batteries (AMIBs). However, practical implementation of some iron-based materials is impeded by their poor conductivity, large volume change, and irreversible phase transition during electrochemical reactions. In this review we critically assess advances in the chemical synthesis and structural design, together with modification strategies, of iron-based compounds for AMIBs, to obviate these issues. We assess and categorize structural and compositional regulation and its effects on the working mechanisms and electrochemical performances of AMIBs. We establish insight into their applications and determine practical challenges in their development. We provide perspectives on future directions and likely outcomes. We conclude that for boosted electrochemical performance there is a need for better design of structures and compositions to increase ionic/electronic conductivity and the contact area between active materials and electrolytes and to obviate the large volume change and low conductivity. Findings will be of interest and benefit to researchers and manufacturers for sustainable development of advanced rechargeable ion batteries using iron-based electrode materials. [ABSTRACT FROM AUTHOR]

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