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Recent advances in synthesis strategies and solar-to-hydrogen evolution of 1T phase MS_(2)(M=W,Mo)co-catalysts

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Journal of Materials Science & Technology 2022年第6期101卷 242-263页

作者： Shuo Li jinyan xiong Xueteng Zhu Weijie Li Rong Chen Gang Cheng School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyDonghu New&High Technology Development ZoneWuhan 430205China College of Chemistry and Chemical Engineering Hubei Key Laboratory of Biomass Fibers and Ecodyeing&FinishingWuhan Textile UniversityWuhan 430200China School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China Institute for Superconducting and Electronic Materials Innovation CampusSquires WayUniversity of WollongongNorth WollongongNSW 2500Australia Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450002China

Photocatalytic water splitting is a promising strategy to produce hydrogen as a sustainable and clean energy carrier,based on abundant solar energy and semiconductor photocatalysts,and it has received extensive research and discussion over the past several *** is challenging,however,to achieve an efficient solar-to-hydrogen evolution process with a single particulate photocatalyst due to the weak solar spectrum harvest and the rapid recombination of photogenerated electron-hole pairs during the photocatalysis *** semiconductors to create different co-catalysts presents a viable solution to the above ***,semiconductor photocatalysts modified by different transition metal sulfidebased co-catalysts with designed functions,especially in light absorption enhancement and chargecarrier-separation efficiency promotion,have attracted much *** continued breakthroughs have been made in the preparation,modification,and solar-to-hydrogen evolution application of the 1T phase MS_(2)(M=W,Mo)co-catalyst-based photocatalysis system in recent years,we believe that a comprehensive review of this kind of co-catalyst would further promote its research and development to address the energy and environmental challenges that we are currently ***,recent studies and progress are summarized on the fabrication of 1T phase MS_(2)(M=W,Mo)-based co-catalyst materials,as well as their roles and functional mechanisms for photocatalytic H;***,concluding perspectives on the opportunities in and challenges for the further exploration of the 1T-MS_(2)(M=W,Mo)-based solar-tohydrogen evolution system are presented.

关键词： Solar-to-hydrogen evolution Co-catalysts 1T-MS_(2)(M=W Mo) Water splitting Synthesis strategies Photocatalysis

Facilely anchoring Cu_(2)O nanoparticles on mesoporous TiO_(2)nanorods for enhanced photocatalytic CO_(2)reduction through efficient charge transfer

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Chinese Chemical Letters 2022年第8期33卷 3709-3712页

作者： Ge Yang Pei Qiu jinyan xiong Xueteng Zhu Gang Cheng School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyDonghu New&High Technology Development ZoneWuhan 430205China College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China

Semiconductor-employed photocatalytic CO_(2) reduction has been regarded as a promising approach for environmental-friendly conversion of CO_(2) into solar ***,TiO_(2)/Cu_(2)O composite nanorods have been successfully fabricated by a facile chemical reduction method and applied for photocatalytic CO_(2) *** composition and structure characterization indicates that the Cu_(2)O nanoparticles are coupled with TiO_(2) nanorods with an intimate *** light illumination,all the TiO_(2)/Cu_(2)O composite nanorods enhance the photocatalytic CO_(2)*** particular,the TiO_(2)/Cu_(2)O-15%sample exhibits the highest CH_(4)yield(1.35μmol g^(-1)h^(-1)) within 4 h irradiation,and it is 3.07 and 15 times higher than that of pristine TiO_(2)nanorods and Cu_(2)O nanoparticles,*** enhanced photoreduction capability of the TiO_(2)/Cu_(2)O-15%is attributed to the intimate construction of Cu_(2)O nanoparticles on TiO_(2) nanorods with formed p-n junction to accelerate the separation of photogenerated electron-hole *** work provides a reference for rational design of a p-n heterojunction photocatalyst for CO_(2) photoreduction.

关键词： TiO_(2)/Cu_(2)O composite Photocatalytic CO_(2)reduction Photocatalysis Charge separation p-n Junction

Synergistic impact of cocatalysts and hole scavenger for promoted photocatalytic H2 evolution in mesoporous TiO2–NiSx hybrid

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Journal of Energy Chemistry 2019年第5期28卷 45-56页

作者： Yi Wei Gang Cheng jinyan xiong Jiaxin Zhu Yixin Gan Mengmeng Zhang Zhen Li Shixue Dou School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430073HubeiChina College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200HubeiChina School of Radiation Medicine and Radiation Protection Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123JiangsuChina Institute for Superconducting and Electronic Materials University of Wollongong.North Wollongong NSW2500Australia

Photocatalytic solar energy conversion to hydrogen is sustainable and attractive for addressing the global energy and environmental issue. Herein, a novel photocatalytic system (NiS/Ni3S4 cocatalysts modified mesoporous TiO2) with superior photocatalytic hydrogen evolution capability through the synergistic impact of NiS/Ni3S4 (NiSx) cocatalyst and efficient hole scavenger has been demonstrated. The photocatalytic hydrogen evolution of TiO2-NiSx hybrids with the different content of NiSx and upon different organic hole scavengers was both investigated. The hybrid of TiO2 decorated with 3%(mole ratio of Ni^2+) NiSx cocatalyst in methanol solution showed the optimal photocatalytic hydrogen evolution rate of 981.59 μmol h^-1 g^-1 which was about 20 times higher than that of bare mesoporous TiO2. Our results suggested that the boosted hydrogen production performance is attributed to both the improved photoinduced electrons migration between NiS and Ni3S4 in cocatalyst and the high hole captured efficiency by hole scavengers of methanol.

关键词： NiS/Ni3S4 Cocatalyst Photocatalytic hydrogen evolution Mesoporous TiO2 Hole scavenger

Achieving simultaneous Cu particles anchoring in meso-porous TiO_(2) nanofabrication for enhancing photo-catalytic CO_(2) reduction through rapid charge separation

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Chinese Chemical Letters 2022年第3期33卷 1313-1316页

作者： jinyan xiong Mengmeng Zhang Mengjie Lu Kai Zhao Chao Han Gang Cheng Zhipan Wen College of Chemistry and Chemical Engineering Hubei Key Laboratory of Biomass Fibers and Ecodyeing&FinishingWuhan Textile UniversityWuhan 430200China School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430205China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China Australia School of Civil and Environmental Engineering Faculty of Engineering and Information TechnologyUniversity of Technology SydneySydneyNSW 2007Australia

A facile solvo-thermal approach was successfully employed to prepare titanium oxide (TiO_(2)) nano-aggregates with simultaneous copper particles anchoring. The as-synthesized composite could convert CO_(2) into CH_(4) and CO products under simulated solar irradiation. The impact of copper loading amounts on the photo-reduction capability was evaluated. It was found proper amount of Cu loading could enhance the activity of CO_(2) photo-reduction. As a result, the optimal composite (TiO_(2)^(-)Cu-5%) consisting of TiO_(2) supported with 5% (mole ratio) Cu exhibits 2.2 times higher CH_(4) yield and 3 times higher CO yield compared with pure TiO_(2). Conduction band calculated from the band gap and valence X-ray photoelectron spectroscopy (XPS) indicated TiO_(2) nano-aggregates have suitable band edge alignment with respect to the CO_(2)/CH_(4) and CO_(2)/CO redox potential. Furthermore, with involving of Cu particles, an efficient separation of photo-generated charges was achieved on the basis of photocurrent response and photoluminescence spectra results, which contributed to the improved photo-catalytic performance. The present work suggested that the Cu-decorated TiO_(2) could serve as an efficient photo-catalyst for solar-driven CO_(2) photo-reduction.

关键词： TiO_(2) Copper Photo-catalytic CO_(2)reduction Photo-catalysis Charge separation Schottky junction

界面电荷快速转移提升铜修饰氧化钨光催化性能

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无机材料学报 2021年第3期36卷 325-331页

作者：熊金艳罗强赵凯张梦梦韩朝程刚武汉纺织大学化学与化工学院武汉430073 武汉工程大学化学与环境工程学院武汉430073 佛山科学技术学院材料科学与氢能学院佛山528000 伍伦贡大学超导与电子材料研究所澳大利亚新南威尔士2500

非贵金属修饰可以有效增强单一半导体的光生电荷分离,进而改善光催化活性。采用一种简单的抗坏血酸室温还原法制备了WO_(3)-Cu复合光催化材料,并用不同表征手段对其组成和结构进行了表征。结果显示,Cu颗粒沉积在WO_(3)纳米立方的表面,... 详细信息

非贵金属修饰可以有效增强单一半导体的光生电荷分离,进而改善光催化活性。采用一种简单的抗坏血酸室温还原法制备了WO_(3)-Cu复合光催化材料,并用不同表征手段对其组成和结构进行了表征。结果显示,Cu颗粒沉积在WO_(3)纳米立方的表面,在模拟太阳光照射下,与WO_(3)相比,WO_(3)-Cu复合材料具有良好的光催化降解刚果红的能力。活性物种捕捉实验以及顺磁共振结果表明,光诱导产生的空穴、羟基自由基、超氧自由基阴离子等活性物种在刚果红降解过程中起主要作用。根据光电化学测试结果,WO_(3)在光催化过程中产生的电子快速转移向Cu颗粒,可以有效分离光生电子-空穴对并加快光生载流子迁移,进而有利于光催化反应的发生,从而使WO_(3)表现出较高的光催化活性。

关键词：半导体金属复合材料 WO_(3)-Cu纳米复合材料污染物降解光催化

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改进的高斯背景建模在车辆检测中的应用

电子测试 2013年第1期24卷 23-25页

作者：李鸿熊金艳长沙理工大学电气与信息工程学院长沙410114

研究实时环境下运动车辆的检测算法,针对存在渐变及重复性运动的车辆运动背景采用改进的高斯背景建模法,对背景进行更新,将所得的当前背景与前一帧视频图像进行相减,得到当前时刻车辆的运动图像。将所得图像进行数学形态学去噪处理得到... 详细信息

研究实时环境下运动车辆的检测算法,针对存在渐变及重复性运动的车辆运动背景采用改进的高斯背景建模法,对背景进行更新,将所得的当前背景与前一帧视频图像进行相减,得到当前时刻车辆的运动图像。将所得图像进行数学形态学去噪处理得到较为理想的车辆检测效果图,并根据处理后的图像判断车辆是否运动以及其运动轨迹。实验证明该方法能去除噪声对图像产生的影响,对判断某一时刻车辆是否运动行之有效。

关键词：改进的高斯背景建模车辆检测数学形态学

白藜芦醇羟丙基环糊精包裹物抗过氧亚硝基作用

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武汉大学学报（理学版） 2010年第3期56卷 320-324页

作者：吕中潘婷邹铅陈嵘熊金艳程波武汉工程大学化工与制药学院/绿色化工过程教育部重点实验室/湖北省新型反应器与绿色化学工艺重点实验室湖北武汉430073

利用羟丙基环糊精(hydroxypropyl-β-cyclodextrin,HP-CD)包裹白藜芦醇(resveratrol,Res),以提高其水溶性.采用紫外法研究了Res/HP-CD包裹物与ONOO-的相互作用,并考查了温度、pH及CO2对Res/HP-CD包裹物与ONOO-反应的影响.结果表明:随着HP-CD浓度增大,Res的水溶性明显增加;Res与HP-CD形成包裹物的化学计量比为1∶1,结合常数为6 778 ***-1;低温、偏高pH有利于反应的进行,CO2的存在使参加反应的Res/HP-CD包裹物减少.

关键词：白藜芦醇羟丙基环糊精包裹物过氧亚硝基

板钛矿TiO_(2)/Cu_(2)O 异质结光催化CO_(2) 还原的综合性化学实验设计与教学实践

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实验科学与技术 2024年第4期22卷 71-78页

作者：程刚陈章静熊金艳武汉工程大学化学与环境工程学院武汉430205 武汉纺织大学化学与化工学院武汉430200

设计了板钛矿TiO_(2)(B-TiO_(2))/Cu_(2)O复合材料在光催化CO_(2)还原应用方面的综合性实验。分别合成了板钛矿TiO_(2)(B-TiO_(2))、Cu_(2)O及其B-TiO_(2)-Cu_(2)O复合材料。通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)和紫外-可见漫反射光谱(DRS)对材料的组成、结构和光学性质进行分析,通过气相色谱法对复合材料光催化CO_(2)还原性能进行了定性定量分析,并且研究了B-TiO_(2)与Cu_(2)O界面p-n异质结的形成对光催化CO_(2)还原活性的促进作用。该综合性实验课与科学前沿紧密及社会生活紧密结合,激发了学生对实验探索的兴趣,锻炼了学生的文献调研和动手实践能力,可作为大学本科生应用化学三年级的综合实验教学内容,为毕业论文的教学工作开展奠定了基础。

关键词：综合性化学实验光催化CO_(2)还原 TiO_(2)/Cu_(2)O p-n异质结实验教学

A hybrid bacterium with tumor-associated macrophage polarization for enhanced photothermal-immunotherapy

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Acta Pharmaceutica Sinica B 2022年第6期12卷 2683-2694页

作者： Jingya Zhao Huabei Huang jinyan Zhao Xiang xiong Sibo Zheng Xiaoqing Wei Shaobing Zhou Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

Remodeling the tumor microenvironment through reprogramming tumor-associated macrophages(TAMs) and increasing the immunogenicity of tumors via immunogenic cell death(ICD) have been emerging as promising anticancer immunotherapy ***,the heterogeneous distribution of TAMs in tumor tissues and the heterogeneity of the tumor cells make the immune activation *** overcome these dilemmas,a hybrid bacterium with tumor targeting and penetration,TAM polarization,and photo thermal conversion capabilities is developed for improving antitumor immunotherapy in *** hybrid bacteria(B.b@QDs) are prepared by loading Ag;S quantum dots(QDs) on the Bifidobacterium bifidum(B.b) through electrostatic *** hybrid bacteria with hypoxia targeting ability can effectively accumulate and penetrate the tumor tissues,enabling the B.b to fully contact with the TAMs and mediate their polarization toward M1 phenotype to reverse the immunosuppressive tumor *** also enables to overcome the intratumoral heterogeneity and obtain abundant tumor-associated antigens by coupling tumor penetration of the B.b with photo thermal effect of the QDs,resulting in an enhanced immune *** strategy that combines B.b-triggered TAM polarization and QD-induced ICD achieved a remarkable inhibition of tumor growth in orthotopic breast cancer.

关键词： Immunotherapy Tumor-associated macrophage Immunogenic cell death Bifidobacterium Quantum dot