Article
Chemistry, Multidisciplinary
Quentin Lenne, Alice Mattiuzzi, Ivan Jabin, Ludovic Troian-Gautier, Jonathan Hamon, Yann R. Leroux, Corinne Lagrost
Summary: A single material electrocatalyst with high activity and durability for both ORR and MOR is a conceptual challenge in designing versatile DMFCs. By using a supramolecular concept, surface-grafted molecular ligands can regulate the reactivity of Pt catalyst, leading to Pt CF3 ${{_{{\rm CF}{_{3}}}}}$ NPs/C with remarkable methanol tolerance, outstanding durability, and chemical stability. This research highlights a promising strategy for tuning interfacial properties, providing a potential solution for the design of DMFC cathodic and anodic compartments.
Article
Chemistry, Physical
Aleksandra Selivanova, Victoria G. Demina, Egor E. Aydakov, Andrey A. Saraev, Vasily V. Kaichev, Valerii Bukhtiyarov
Summary: The oxidation of methanol on a Pt(1 1 1) single crystal surface was found to start at around 350 K, producing mainly CO2 and methyl formate. Key intermediates in the reaction include CO and formaldehyde, with formates exhibiting low thermal stability and carbonates showing extremely high thermal stability. Carbonates, along with CO, can inhibit the oxidation of methanol on the platinum surface.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yang Liu, Enbo Zhu, Jin Huang, Ao Zhang, Aamir Hassan Shah, Qingying Jia, Mingjie Xu, Ershuai Liu, Qiang Sun, Xiangfeng Duan, Yu Huang
Summary: Periodic assembly of Pt-Au Janus nanoparticles assisted by peptide T7 was used to create one-dimensional Pt-Au nanowires with periodic alternating Pt and Au nanoblocks. The Pt-Au NWs exhibited significantly improved performance, with 5.3 times higher specific activity and 2.5 times higher mass activity in methanol oxidation reaction (MOR) compared to commercial Pt/C catalyst. Furthermore, the periodic heterostructure enhanced the stability of Pt-Au NWs in MOR, with Pt-Au NWs retaining 93.9% of their initial mass activity, much higher than commercial Pt/C (30.6%).
Article
Chemistry, Physical
Te Zhang, Houkang Pu, Huizhen Dai, Kaiyu Dong, Kuankuan Wang, Luming Zhou, Yingying Wang, Yujia Deng
Summary: In this study, Pt-Rh trioctahedral nanocrystals with {441} high-index facets were successfully synthesized using the electrochemical square wave potential method. The balance between etching and growth was found to be crucial in achieving the desired structure, leading to enhanced catalytic activity and stability for methanol and ethanol oxidation reactions compared to commercial Pt/C catalysts.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yang Zhou, Yubin Kuang, Guangzhi Hu, Xinzhong. Wang, Ligang Feng
Summary: This study demonstrates a low-energy input method for hydrogen production from water electrolysis via methanol-assisted electrolysis. The researchers used a novel catalyst, Pt-CoTe/NC nanospheres, which exhibited superior catalytic activity and stability. The results showed that methanol oxidation reaction and hydrogen evolution reaction were effectively promoted with the optimized Pt-CoTe/NC catalyst.
MATERIALS TODAY PHYSICS
(2022)
Article
Engineering, Environmental
Ge Ma, Xiaoyu Zhang, Guofu Zhou, Xin Wang
Summary: In this study, ultrathin NiO nanosheets supported Pt nanoparticles nanohybrids with high electrocatalytic activity and durability were successfully synthesized, which can be efficiently used for both methanol oxidation reaction and hydrogen evolution reaction in alkaline environment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hsiang-Sheng Chen, Tania M. Benedetti, Jiaxin Lian, Soshan Cheong, Peter B. O'Mara, Kazeem O. Sulaiman, Cameron H. W. Kelly, Robert W. J. Scott, J. Justin Gooding, Richard D. Tilley
Summary: The study found that in Pt3Sn catalysts, 60% ordered nanocubes exhibit higher activity compared to 95% ordered nanocubes, as the Sn atoms in the 60% ordered nanocubes are more easily oxidized to Sn4+, leading to better oxidation efficiency. This highlights the importance of controlling the environment and neighboring atoms in catalyst design for intermetallic Pt-M electrocatalysts.
Article
Chemistry, Multidisciplinary
Heon Chul Kim, Jong Wook Hong
Summary: Highly porous Au-Pt urchin-like bimetallic nanocrystals were prepared by a one-pot wet-chemical synthesis method, with the porosity controlled by the amount of hydrazine used as reductant. Due to their unique morphology leading to high porosity and surface active sites, the prepared nanocrystals were superior catalysts for electrochemical methanol oxidation. This approach opens up possibilities for designing bimetallic porous materials with unprecedented functions.
Article
Chemistry, Physical
Yingxue Sun, Chunling Bo, Zhijjie Cheng, Xinyi Zhang, Jianjun Liu, Lingyu Piao
Summary: This work proposes a novel tandem reaction pathway for the photocatalytic oxidation of methane to methanol, achieving high activity and selectivity. The study demonstrates that hydroxyl radicals and hydroperoxyl radicals catalyze the oxidation of methane to form methanol on a photocatalyst. This method shows high productivity and selectivity under mild conditions.
Article
Chemistry, Physical
Yao Nie, Yi Wang, Xingqun Zheng, Ting Yang, Qinqing Wen, Yan Fang, Xing Cheng, Ruxin Li, Li Li
Summary: The electronic state of catalyst can be effectively regulated by surface functionalization strategy. The Ce-O-Pt/C catalyst, synthesized via coating-annealing-etching route, has Ce-O-Pt linkages decorating on Pt surface, which induce an obvious charge transfer interaction and modulate the d-band state of Pt. The optimized Pt electronic structure facilitates the adsorption of oxygen-containing species and oxidation of CO intermediates, resulting in improved catalytic MOR activity, stability, and anti-CO poisoning ability.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Physical
Hao Tian, Yanhui Yu, Qian Wang, Jing Li, Peng Rao, Ruisong Li, Yanlian Du, Chunman Jia, Junming Luo, Peilin Deng, Yijun Shen, Xinlong Tian
Summary: Direct methanol fuel cells (DMFCs) have attracted attention for their high energy density, but the slow kinetics of methanol oxidation reaction affects commercialization. Pt based catalysts are effective but expensive, while 2D Pt based nanostructures are considered promising for MOR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Naresh Nalajala, Kranti N. Salgaonkar, Inderjeet Chauhan, Siva Prasad Mekala, Chinnakonda S. Gopinath
Summary: The study synthesized facet-controlled Pd nanoparticles with different morphologies and Pt-coated Pd nanoparticles, finding that Pt-coating enhances catalytic activity, with 0.5θ(Pt)-Pd-TO/P25 showing the highest methanol conversion rate and formaldehyde selectivity. The results highlight the importance of surface properties in heterogeneous catalysis and suggest that a small amount of Pt can simulate the activity equivalent to bulk Pt.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Applied
Jie Li, Cheng Wang, Yuefan Zhang, Shinichi Hata, Kewang Zhang, Changqing Ye, Yukihide Shiraishi, Yukou Du
Summary: This study demonstrates the controlled growth of Pt nanoparticles on Pd nanosheets through the regulation of reduction kinetics. The different growth patterns of Pt nanoparticles on Pd nanosheets result in the synergy between electronic and interfacial effects, enhancing the catalytic activity and durability of the heterostructure.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Yihan Chen, Jinwei Chen, Jie Zhang, Yan Luo, Chenyang Zhang, Yali Xue, Gang Wang, Ruilin Wang
Summary: A Pt-MoO3/CNT-ALD catalyst with Pt nanoparticles supported on MoO3-modified carbon nanotubes via ALD technology shows significant improvements in catalytic activity and durability. The catalyst exhibits high activity for methanol oxidation and oxygen reduction reactions, along with excellent long-term stability. The enhanced performance is attributed to increased Pt-O bonds, optimized electronic structure, and strengthened MMOI.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Chunyu Hao, Jie Gan, Yueqiang Cao, Wei Luo, Wenyao Chen, Gang Qian, Xinggui Zhou, Xuezhi Duan
Summary: By tailoring the surface properties of carbon nanotubes, this study achieved size-dependent methanol oxidation reaction activity in the preparation of Pt catalysts, with the 1.9 nm Pt catalyst on CNT-600-O support showing the highest peak current density. Insights into Pt size effects and active sites could guide the fabrication of highly efficient Pt-based MOR catalysts.
Article
Spectroscopy
Xiaoli Li, Zhaoshui Yu, Jinli Xu, Yanshan Pan, Wei Bo, Bin Liu, Pengpeng Zhang, Jinfeng Bai, Qin Zhang
Summary: A new sample preparation technique using high pressure pressed pellet and coated with a polyester film is proposed for major and trace element determination in geochemical samples by wavelength dispersive X-ray fluorescence spectrometer. The accuracy of the method is evaluated using calibration curves created with reference materials and certified reference materials.
X-RAY SPECTROMETRY
(2023)
Article
Gastroenterology & Hepatology
Andrew D. Schreiner, Jingwen Zhang, William P. Moran, David G. Koch, Justin Marsden, Sherry Livingston, Patrick D. Mauldin, Mulugeta Gebregziabher
Summary: This study aims to investigate the association between FIB-4 risk strata and the incidence of severe liver disease (SLD) in primary care patients without known chronic liver disease (CLD). The results indicate that indeterminate and high-risk FIB-4 strata are associated with an increased incidence of SLD.
LIVER INTERNATIONAL
(2023)
Article
Computer Science, Software Engineering
Yang Yan, Zhang Jinlong, Liu Ce, Zhang Haowen, Li Xiang
Summary: In this work, an algorithm for image visibility restoration based on color correction and composite channel prior is proposed. The algorithm effectively distinguishes and restores the visibility of haze and dust images through steps such as color correction, channel differences, and adaptive gamma correction.
Article
Materials Science, Ceramics
Yanling Cheng, Haoxian Huang, Xinxin Xi, Yuqiang Deng, Hainan Zhang, Chengyong Wang, Huatay Lin
Summary: Al flake addition significantly improves the properties of vinyl-polysilazane based photo-curable resin derived ceramics (P-PDCs), reducing macroscopic cracking and micrometer voids. Pyrolyzed P-PDCs with 0.6 wt% Al flake content exhibit the highest Vickers hardness and bending strength. Nano-indentation measurements show increased elastic modulus and indentation hardness with increasing Al flake content. During pyrolysis, the reacted Al flake forms hollow lamellar Al2O3 phases, enhancing both the mechanical properties and gas release.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Wenming Chai, Weidong Zhu, Zeyang Zhang, Dawei Liu, Yufeng Ni, Zhicheng Song, Peng Dong, Dazheng Chen, Jincheng Zhang, Chunfu Zhang, Yue Hao
Summary: CsPbBr3 particles act as nucleation seeds to assist crystal growth and improve energy level alignment in CsPbI3 film, leading to enhanced carrier transport and high performance of CsPbI3 perovskite solar cells. The method demonstrated in this work holds potential for the commercialization of CsPbI3 PSCs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Juer Liu, Li Huang, Jun An, Yiwei Ma, Yanling Cheng, Renchuan Zhang, Peng Peng, Yuanpu Wang, Min Addy, Paul Chen, Chi Chen, Yuhuan Liu, Guangwei Huang, Roger Ruan
Summary: High-pressure homogenization effectively improves the physicochemical and functional properties of almond hull powder, enhancing its antioxidant capacity.
JOURNAL OF FOOD PROCESS ENGINEERING
(2023)
Review
Environmental Sciences
Yifei Li, Qingbin Lu, Yi Xing, Kai Liu, Wei Ling, Jian Yang, Qizhen Yang, Tianqi Wu, Jiafu Zhang, Zengxin Pei, Ziyuan Gao, Xiaoyan Li, Fan Yang, Hongjie Ma, Kehan Liu, Ding Zhao
Summary: Microplastics, particularly microfibers, have become a critical environmental pollution issue attracting attention from various countries. This research systematically reviews the contamination of microfibers through bibliometric analysis. It analyzes the primary sources and influencing factors of microfibers, summarizes the impact of fiber preparation and care processes on microfiber formation, discusses their migration in different environments, and explores their effects on ecosystems. Additionally, current and foreseeable effective treatment, disposal, and resource utilization methods for microfibers are explained.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Jingchao Zhang, Chengtao Tian, Ye Xu, Jinlin Chen, Linbo Xiao, Guiying Wu, Fang Jin
Summary: Silicone zeolite prepared from hexafluorosilicic acid is an effective adsorbent for fluoride removal. The morphology and structure of the prepared composites were characterized using XRD, FT-IR, and BET. Through studying the regeneration-adsorption cycle of zeolite, the mechanism of fluoride desorption and regeneration was explained, and the adsorption performance and regeneration adsorption performance were evaluated. The NaA zeolite regenerated with NH3 center dot H2O showed better fluorine re-adsorption performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Xingyu Fang, Jialin Li, Lin Liu, Yijun Zhang, Zhiquan Tang, Jinping Zhang
Summary: A new axial loading MRI device for lumbar spine was developed and proved to effectively implement axial loading without causing obvious discomfort for examinees. Significant changes were found in certain structural parameters of lumbar spine after axial loading, with some participants showing imaging-diagnosable disc herniation or bulging.
QUANTITATIVE IMAGING IN MEDICINE AND SURGERY
(2023)
Article
Materials Science, Composites
Mengchao Shang, Jingjing Zhang, Zhou Zhou, Fei Shi, Zhiqiang Wang
Summary: In this study, rare earth Europium (Eu3+) complexes were successfully grafted onto carbon fibers, imparting them with fluorescence characteristics. The Eu-complex grafted carbon fibers (CEuCF) exhibited sharp red emission attributed to the 5D0-*7F1 and 5D0-*7F2 transitions of Eu3+. The surface roughness of the carbon fibers changed after the introduction of fluorescence properties. The fluorescence intensity of the carbon fibers increased initially and then decreased with increasing Eu content, reaching its peak at a molar ratio of 2 mmol. The energy transfer in the CEuCF was also discussed in detail. Enduing carbon fibers with luminescent properties could expand their application areas.
COMPOSITES COMMUNICATIONS
(2023)
Article
Electrochemistry
Yingping Bu, Yawen Zhang, Yingying Liu, Simin Li, Yanlin Zhou, Xuefen Lin, Zicong Dong, Renchun Zhang, Jingchao Zhang, Daojun Zhang
Summary: Hierarchical Co9S8-Ni3S2 composite hollow microspheres supported on nickel foam were synthesized by a simple two-step solvothermal method. The electrocatalyst exhibited high activity, good conductivity, and satisfactory stability, making it effective for oxygen evolution reaction.
Review
Chemistry, Physical
Jingwen Li, Weinan Yin, Junan Pan, Yingbo Zhang, Fengshun Wang, Longlu Wang, Qiang Zhao
Summary: Hydrogen is expected to replace traditional fossil energy as a clean, efficient, and sustainable energy source. The external field-assisted hydrogen evolution reaction (HER) has become a new research hotspot, and this article provides a systematic summary of the promoting effects of various external fields on catalytic hydrogen production. It discusses the challenges and future research topics in this field.
Review
Chemistry, Physical
Wenhui Wang, Chaowei Li, Shizhuo Liu, Jingchao Zhang, Daojun Zhang, Jimin Du, Qichong Zhang, Yagang Yao
Summary: Aqueous zinc-ion batteries (AZIBs) offer high safety, cost-effectiveness, and ecofriendliness, making them suitable for macroscale energy storage. Flexible quasi-solid-state AZIBs (FQAZIBs) are particularly promising for wearable electronics due to their ability to withstand mechanical deformation. This review provides a comprehensive summary of the recent progress and design strategies for FQAZIBs, focusing on energy storage mechanisms, design principles, and practical applications in wearable electronics. The latest developments in FQAZIBs are discussed, including their compressibility, stretchability, electrochromic ability, anti-freezing ability, self-healing ability, self-charging properties, photodetecting function, shape memory, biodegradability, and actuated function.
ADVANCED ENERGY MATERIALS
(2023)
Article
Endocrinology & Metabolism
Yanli Yi, Yan Luo, Ruijing He, Haoyun Zhang, Zai Wang, Xianqiao Li, Jingchao Zhang, Zhiqiang Cui
Summary: This study investigated the molecular mechanism of microRNA-425-5p in promoting breast cancer cell proliferation. It identified new targets of miR-425-5p in breast cancer and provided potential biomarkers and drug targets for clinical diagnosis and treatment.
JOURNAL OF BIOLOGICAL REGULATORS AND HOMEOSTATIC AGENTS
(2023)
Article
Chemistry, Physical
Melissa Guarino-Hotz, Jeremy L. Barnett, Kai-Chun Chou, Allison A. Win, Heng Zhang, Chengyu Song, Scott R. J. Oliver, Jin Z. Zhang
Summary: Metal halide perovskites, such as methylammonium lead bromide (MAPbBr3), have attracted significant attention for their interesting photoelectric properties. In this study, two different types of methylammonium lead bromide magic-sized clusters (MSCs) were synthesized using different methods and their optical properties were characterized. It was found that the heated LARP (HLARP) synthesis method resulted in MSCs with higher photoluminescence (PL) quantum yield and improved stability in both solution and solid state forms. The addition of a non-coordinating matrix, paraffin, further enhanced the stability of the MSCs. The MSCs were analyzed using various techniques, including Raman spectroscopy, X-ray diffraction, and transmission electron microscopy, to confirm their structure and properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)