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A single atom photocatalyst co-doped with potassium and gallium for enhancing photocatalytic hydrogen peroxide synthesis

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Nano Research 2024年第8期17卷 7027-7038页

作者： Wenan Cai Yuichiro Tanaka Xing zhu Teruhisa Ohno Department of Applied Chemistry Faculty of EngineeringKyushu Institute of TechnologyKitakyushu 804-8550Japan College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&TechnologyXi’an 710021China

Polymer carbon nitride(PCN)is widely used in ***,pristine PCN has disadvantages such as insufficient visible light absorption and low photogenerated carrier separation efficiency that greatly limited the photocatalytic *** a non-toxic metal,gallium has the potential to solve the defects of *** ions coordinated with nitrogen in carbon nitride to form Ga-N active sites and improved the photocatalytic *** doped potassium ions form a transmission channel for charge redistribution and transfer between adjacent layers,which is beneficial for better separation of photoexcited *** this study,a series of PCN co-doped with gallium and potassium(Ga-K-PCN)were *** experimental results indicated photocatalytic generation of hydrogen peroxide proceeds through the 2e−oxygen reduction reaction ***,Nyquist plots and photocurrent results further proved that the presence of Ga-N sites and potassium ion doping could significantly improve the separation/transfer of intra-planar and interlayer charge carriers and thus enhance photocatalytic *** Ga10-K3-PCN photocatalysts promoted yield of h_(2)O_(2),with reactivity at 28.2μmol/(g·h)and solar-to-chemical conversion efficiency at 0.64%,surpassed that of a typical photo-catalyst based on PCN(0.18%).

关键词： photocatalysis gallium oxygen reduction reaction h_(2)O_(2) production

An unexpected approach to enhance specific surface area and mesopore amount of polyaniline by Zn doping

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Rare Metals 2024年第9期43卷 4585-4594页

作者： Zhi-Da zhu Yu-Zhe han Xiao-Bi jing School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Poly-p-anisidine could be easily fabricated via the oxidative polymerization reaction of p-anisidine using h_(2)O_(2)as the green *** was unexpectedly found that zinc doping could significantly improve the adsorption ability of the material versus heavy metals such as Pb,Cu,Pd,Ag and *** of nitrogen adsorption–desorption experiments demonstrated that Zn doping could enhance the specific surface area and mesopore amount of the prepared material,which might facilitate its absorption to *** work not only provides a novel material for the treatment of heavy metal-polluted water but also leads to a nice mesoporous catalyst support for environment protection and organic synthesis,*** Zn-doped poly-panisidine can be employed as the catalyst support to prepare Cu@PANI-OMe/Zn or Pd@PANI-OMe/Zn for the oxidative degradation reaction of phenol or Suzuki–Miyaura coupling reactions,*** discloses a new strategy for fabricating the mesoporous polyaniline materials with profound application potential.

关键词： Surfaces Porous materials Rare metal concentration Adsorption Catalysis

A systematic review of risk prediction models for diabetic foot infections

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Chinese journal of Nursing 2024年第19期59卷 2346-2352页

作者： zhu j. Chen X. zhu Y. Zhou j. Bai j. 复旦大学附属华东医院护理部上海市200040 中国医学科学院皮肤病医院麻醉手术科复旦大学护理学院

Objective To systematically evaluate the risk prediction models of diabetic foot infections, and to explore its implications for clinical nursing care. Methods Relevant studies in the databases of CNKI, VIP, Wanfang, CBM, CINAhL, PubMed, Web of Science, Cochrane Library, Embase, ProQuest, and Ovid were searched for the timeframe of database construction to December 2023. Literature was screened independently by 2 investigators and the area under the model curve(AUC) and its 95% confidence interval(CI), calibration method and predictors were extracted, and the quality of the model was evaluated using the Predictive Modeling Study Risk of Bias Assessment Tool. Meta-analysis of the predictive value of model predictors was performed using RevMan 5.4 software. Results 7 studies were included, containing 8 risk prediction models, all of which reported the AUC(0.748-0.922), and 6 models underwent model calibration. The overall fit of the included studies was good, among which 1 model was low fit, and all 7 studies were at high risk of bias, mainly focusing on predictors and analysis. Meta-analysis showed that the area under the curve of the combined models was 0.831(95%CI:0.780~0.883);the disease duration(OR=2.460, 95%CI:1.850~3.270), vascular disease(OR=3.110, 95%CI:1.070~9.000), and neuropathy(OR=3.550, 95%CI:1.920~6.560) were effective predictors of diabetic foot infection. Conclusion The current diabetic foot infection risk prediction model is still in the developmental stage, and further optimization and external validation of the existing model is recommended for the future. © 2024 Chinese Nursing journals Publishing house Co.,Ltd. All rights reserved.

关键词： Diabetic Foot Evidence-Based Nursing Infections Prediction Model Systematic Review

Construction of pyrene-based hydrogen-bonded organic frameworks as photocatalysts for photooxidation of styrene in water

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Chinese Chemical Letters 2024年第10期35卷 394-398页

作者： Rongxin zhu Shengsheng Yu Xuanzong Yang Ruyu zhu hui Liu Kaikai Niu Lingbao Xing School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000China

Using hydrogen-bonded organic frameworks(hOFs)as photosensitizers to perform photocatalytic oxidation reactions under green and mild conditions is still a challenge for the application of hOFs *** study presents a novel approach that exploits hOFs to enhance the efficiency of photocatalytic oxidation for achieving visible light catalytic oxidation of styrene and its derivatives in the aqueous *** using 1,3,6,8-tetrakis(p-benzoic acid)pyrene(h_(4)TBAPy)as the monomer,a pyrene-based hydrogen-bonded organic framework(PFC-1)with a microporous structure was successfully *** with monomer h_(4)TBAPy,due to the exciton effect and the interlayer confinement of hOFs,the singlet oxygen(1O_(2))production efficiency is significantly improved,which has great potential in photocatalytic oxidation ***,the practicality of PFC-1 as a photocatalyst was studied,and the photocatalytic oxidation of styrene and its derivatives in aqueous solution was achieved under visible light with high catalytic efficiency,indicating that PFC-1 has significant potential to promote photocatalytic oxidation reactions under mild *** utilization of hOFs as photosensitizers in this straightforward approach enables the attainment of green photocatalytic oxidation,hence expanding the potential applications of hOFs materials within the realm of photocatalysis.

关键词： Pyrene hydrogen-bonded organicframeworks Singlet oxygen Photocatalysis Styrene

Introducing cerium into TiO_(2)@MnO_(x) hollow-sphere structure for highly active photothermocatalysis degradation of ethyl acetate and NO under h_(2)O at low temperature

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journal of Rare Earths 2024年第5期42卷 889-898,I0003页

作者： Yinming Fan Yanhong Wang Morui Li Yinian zhu Zongqiang zhu Shengpeng Mo Lihao Zhang Shen Tang Xiaobin Zhou Yanping Zhang Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of TechnologyGuilin541004China The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control.Guilin University of Technology.Guilin 541004China Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area Nanning530022China

The CeO_(2)-TiO_(2)@MnO_(x) catalyst was prepared by the co-precipitation method and applied to the photothermocatalysis system of ethyl acetate and NO simultaneous degradation under h_(2)O at low temperature,which introduced Ce into TiO_(2)@MnO_(x) hollow sptrera *** optimum TiO_(2)/MnO_(x) ratio and Ce introducing amount were obtained in the *** of them,the NO and ethyl acetate conversion percentage of TiO_(2)@MnO_(x)(n_(Mn):n_(Ti)=40:40)is 74%and 62%at 240℃,***_(2)-TiO_(2)@MnO_(x)(n_(Mn):n_(Ce)=1:1)exhibits the best catalytic performance,its efficiency for NO conversion is 83%and the conversion of ethyl acetate reaches 72%at 240℃.In addition,it is confirmed that the Cedoped nanocomposites have more uniform dispersion through various characterization and analysis ***,these catalysts have a large specific surface area as well as a large number of surface-active oxygen and oxygen *** can further improve the catalytic performance based on the adjusted ratio of active ***,this work investigated the relationship between multi-metal interactions and catalytic performance in the presence of h_(2)***,the possible reaction pathways for the simultaneous removal of NO and ethyl acetate were explored in our system.

关键词： Photothermocatalysis Ethyl acetate NO Low temperature h_(2)O Rare earths

Editorial for the Special Issue on Emerging Technology and Advanced Application of Nondestructive Detection for Power Equipment

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Chinese journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li j. Mei h. Li S. Tianjin University China Tsinghua Shenzhen International Graduate School China Lanzhou jiaotong University China

The rapid development of clean and renewable energy technologies represented by wind and solar energy,as well as the continuous growth of load demand,have put forward higher requirements for the safe operation of the power *** performance of power equipment based on traditional dielectric materials is often limited by various defects generated during molding,transportation,assembly,and operation,which cannot meet the reliability requirements of power systems in the new *** detection is an essential technical method in industrial development,which can detect and evaluate the defect and damage status of in-service equipment,key components,and materials without damaging the object.

关键词： service Application operation

Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mechanisms

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journal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.jeong S.W.Lee W.j.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The superplastic behavior and associated deformation mechanisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with a grain size of 3.2μm,primarily composed of the BCCβphase and a small amount of the hCPαphase,were examined in a temperature range of 473 K to 623 *** microstructural refinement of this alloy was achieved by employing high-ratio differential speed *** best superplasticity was achieved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),where tensile elongations of 550±600%were *** the heating and holding stage of the tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider this effect when analyzing and understanding the superplastic deformation behavior and *** the investigated strain rate range,the superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,while at high strain rates,lattice diffusion-controlled dislocation climb creep was the rate-controlling deformation *** was concluded that solute drag creep is unlikely to *** the late stages of deformation at 523 K,it was observed that grain boundary sliding led to the agglomeration of theαphase,resulting in significant strain *** mechanism maps were constructed forβ-Mg-Li alloys in the form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using the constitutive equations for various deformation mechanisms derived based on the data of the current tests.

关键词： Magnesium-lithium alloy Superplasticity Severe plastic deformation Grain size Grain growth

Recent advances in graphene-based phase change composites for thermal energy storage and management

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Nano Materials Science 2024年第2期6卷 115-138页

作者： Qiang zhu Pin jin Ong Si hui Angela Goh Reuben j.Yeo Suxi Wang Zhiyuan Liu Xian jun Loh Institute of Materials Research and Engineering A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis WayInnovis#08-03138634Singapore Institute of Sustainability for Chemicals Energy and EnvironmentA*STAR(Agency for ScienceTechnology and Research)1 Pesek RoadJurong Island627833Singapore School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University21 Nanyang Link637371Singapore Shenzhen Institutes of Advanced Technology(SIAT) Chinese Academy of Sciences(CAS)1068 Xueyuan AvenueShenzhen518055China Department of Material Science and Engineering National University of Singapore9 Engineering Drive 1#03-09 EA117575Singapore

Energy storage and conservation are receiving increased attention due to rising global energy ***,the development of energy storage materials is *** energy storage(TES)systems based on phase change materials(PCMs)have increased in prominence over the past two decades,not only because of their outstanding heat storage capacities but also their superior thermal energy regulation ***,issues such as leakage and low thermal conductivity limit their applicability in a variety of ***-based materials such as graphene and its derivatives can be utilized to surmount these *** study examines the recent advancements in graphene-based phase change composites(PCCs),where graphene-based nanostructures such as graphene,graphene oxide(GO),functionalized graphene/GO,and graphene aerogel(GA)are incorporated into PCMs to substantially enhance their shape stability and thermal conductivity that could be translated to better storage capacity,durability,and temperature response,thus boosting their attractiveness for TES *** addition,the applications of these graphene-based PCCs in various TES disciplines,such as energy conservation in buildings,solar utilization,and battery thermal management,are discussed and summarized.

关键词： Phase change material Nanocomposites Solar energy Sustainable energy Thermo-regulation

hydraulic Fracturing Tests of a Compacted Clay

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Hydraulic Fracturing Tests of a Compacted Clay