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Systematic engineering of BiVO_(4)photoanode for efficient photoelectrochemical water oxidation

Carbon Energy 2024年第4期6卷 12-21页

作者： zhiting liang Meng Li Kai‐Hang Ye Tongxin Tang Zhan Lin Yuying Zheng Yongchao Huang Hongbing Ji Shanqing Zhang Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina Chemical Engineering Guangdong Laboratory Jieyang Branch of ChemistryJieyangChina Key Laboratory for Water Quality and Conservation of the Pearl River Delta Institute of Environmental Research at Greater Bay AreaMinistry of EducationGuangzhou UniversityGuangzhouChina State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology Institute of Green Petroleum Processing and Light Hydrocarbon ConversionCollege of Chemical EngineeringZhejiang University of TechnologyHangzhouChina School of Environment and Science Centre for Catalysis and Clean EnergyGriffith UniversityGold Coast CampusSouthportQueenslandAustralia

BiVO_(4)is one of the most promising photoanode materials for photoelectrochemical(PEC)solar energy conversion,but it still suffers from poor photocurrent density due to insufficient light‐harvesting efficiency(LHE),weak photogenerated charge separation efficiency(Φ_(Sep)),and low water oxidation efficiency(Φ_(OX)).Herein,we tackle these challenges of the BiVO_(4)photoanodes using systematic engineering,including catalysis engineering,bandgap engineering,and morphology engineering.In particular,we deposit a NiCoO_(x)layer onto the BiVO_(4)photoanode as the oxygen evolution catalyst to enhance theΦ_(OX)of Fe‐g‐C_(3)N_(4)/BiVO_(4)for PEC water oxidation,and incorporate Fe‐doped graphite‐phase C_(3)N_(4)(Fe‐g‐C_(3)N_(4))into the BiVO_(4)photoanode to optimize the bandgap and surface areas to subsequently expand the light absorption range of the photoanode from 530 to 690 nm,increase the LHE andΦ_(Sep),and further improve the oxygen evolution reaction activity of the NiCoO_(x)catalytic layer.Consequently,the maximum photocurrent density of the as‐prepared NiCoO_(x)/Fe‐g‐C_(3)N_(4)/BiVO_(4)is remarkably boosted from 4.6 to 7.4 mA cm^(−2).This work suggests that the proposed systematic engineering strategy is exceptionally promising for improving LHE,Φ_(Sep),andΦ_(OX)of BiVO_(4)‐based photoanodes,which will substantially benefit the design,preparation,and large‐scale application of next‐generation high‐performance photoanodes.

关键词： bismuth vanadate carbon nitride charge separation heterojunction water oxidation

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The photo-decomposition and self-restructuring dynamic equilibrium mechanism of Cu_(2)(OH)_(2)CO_(3)for stable photocatalytic CO_(2)reduction

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Journal of Energy Chemistry 2024年第5期92卷 104-112页

作者： Yaqing Zhi Haoning Mao Guangxing Yang Qiao Zhang zhiting Liu Yonghai Cao Siyuan Yang Feng Peng School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006GuangdongChina College of Materials and Energy South China Agricultural UniversityGuangzhou 510642GuangdongChina School of Chemistry and Chemical Engineering South China University and TechnologyGangzhou 510640GuangdongChina

Developing suitable photocatalysts and understanding their intrinsic catalytic mechanism remain key challenges in the pursuit of highly active,good selective,and long-term stable photocatalytic CO_(2)reduction(PCO_(2)R)systems.Herein,monoclinic Cu_(2)(OH)_(2)CO_(3)is firstly proven to be a new class of photocatalyst,which has excellent catalytic stability and selectivity for PCO_(2)R in the absence of any sacrificial agent and cocatalysts.Based on a Cu_(2)(OH)_(2)^(13)CO_(3)photocatalyst and 13CO_(2)two-sided^(13)C isotopic tracer strategy,and combined with in situ diffused reflectance infrared Fourier transform spectroscopy(DRIFTS)analysis and density functional theory(DFT)calculations,two main CO_(2)transformation routes,and the photo-decomposition and self-restructuring dynamic equilibrium mechanism of Cu_(2)(OH)_(2)CO_(3)are definitely revealed.The PCO_(2)R activity of Cu_(2)(OH)_(2)CO_(3)is comparable to some of state-of-the-art novel photocatalysts.Significantly,the PCO_(2)R properties can be further greatly enhanced by simply combining Cu_(2)(OH)_(2)CO_(3)with typical TiO_(2)to construct composites photocatalyst.The highest CO_(2)and CH_(4)production rates by 7.5 wt%Cu_(2)(OH)_(2)CO_(3)-TiO_(2)reach 16.4μmol g^(-1)h^(-1)and 116.0μmol g^(-1)h^(-1),respectively,which are even higher than that of some of PCO_(2)R systems containing sacrificial agents or precious metals modified photocatalysts.This work provides a better understanding for the PCO_(2)R mechanism at the atomic levels,and also indicates that basic carbonate photocatalysts have broad application potential in the future.

关键词： CO_(2)photocatalytic reduction Photocatalysis Basic copper carbonate Self-reconstruction Photocatalyst

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Supramolecular phenolic network-engineered C-CeO_(2) nanofibers for simultaneous determination of isoniazid and hydrazine in biological fluids

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Chinese Chemical Letters 2024年第6期35卷 496-501页

作者： Gang Lang Jing Feng Bo Feng Junlan Hu Zhiling Ran zhiting Zhou Zhenju Jiang Yunxiang He Junling Guo School of Science Xihua UniversityChengdu 610039China BMI Center for Biomass Materials and Nanointerfaces College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China Southwest Computer Co. Ltd.Chongqing 400060China Bioproducts Institute Department of Chemical and Biological EngineeringThe University of British ColumbiaVancouver V6T 1Z4Canada State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China National Engineering Laboratory for Clean Technology of Leather Manufacture Sichuan University Chengdu 610065China

Electrochemical sensing provides a powerful technological means for the therapeutic drug monitoring of drug-resistant tuberculosis but requires a functionalized electrode to capture the analytes and catalyze their redox reactions.Herein,we construct a nickel-tannic acid supramolecular network(Ni-TA)on the surface of electrospun-derived C-CeO_(2) nanofiber for the sensitive and simultaneous detection of isoniazid(INZ)and hydrazine(HYD).Mechanistic investigations demonstrate that Ni-TA is electronegative and hydrophilic,thus facilitating an efficient mass and electron transfer.Ni-TA/C-CeO_(2) has higher adsorption rate constants(0.091 g mg^(-1)h^(-1)for INZ,and 0.062 g mg^(-1)h^(-1)for HYD)than native C-CeO_(2)(0.075 g mg^(-1)h^(-1)for INZ,and 0.047 g mg^(-1)h^(-1)for HYD).Moreover,Ni-TA/C-CeO_(2)(56Ω)has lower charge transfer resistances than C-CeO_(2)(417Ω).Ni-TA/C-CeO_(2) performs low detection limits and wide linearity ranges for INZ(0.012μmol/L and 0.1-400μmol/L,respectively)and HYD(0.008μmol/L and 0.015-1420μmol/L,respectively),coupled with high selectivity,cycle stability and reproducibility.This research demonstrated the promising applications of Ni-TA/C-CeO_(2) by analyzing human-collected plasma and urine samples.

关键词： Electrochemical detection Therapeutic drug monitoring Isoniazid Hydrazine Tuberculosis

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Identification of novel targets and mechanisms of wogonin on lung cancer,bladder cancer,and colon cancer

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未来食品学报(英文) 2024年第3期4卷 267-279页

作者： Lin Zhou Yunran Hu Changxing Gao Congci Yu zhiting Sun Weihong Ge Hui Yang Department of Pharmacy Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210008China China Pharmaceutical University Nanjing Drum Tower Hospital Nanjing 210008China Hospital for Skin Disease Institute of DermatologyChinese Academy of Medical Sciences and Peking Union Medical CollegeNanjing 210042China Department of Scientific Research Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210008

Wogonin(WOG)has been demonstrated to have anti-cancer activity,but the mechanisms remain unclear.In this study,new targets of WOG were predicted for lung cancer,bladder cancer,and colon cancer by using bioinformatics methods.wOG might primarily suppress cancers via regulating arachidonic acid,Ras,MAPK,linoleic acid,PI3K Akt,and folate biosynthesis pathways.3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium(MTS)assay showed that WOG inhibited the proliferation of A549 cells.Real-time quantitative reverse transcription PCR(RT-qPCR)results indicated that anti-lung cancer effect of WOG was achieved by regulating the expression of 18 target genes,including AKRIBI0,AKRIC3,BDNF,CAVI,CXCL2,CYP2B6,CYP4F3,DAO,EGF,ENO3,IL6,PLA2GlB,PLA2G2F,PLA2G4A,PTGES,SLCOIBI,SLCOIB3,and TFAP2A.The Kaplan-Meier survival curves further confirmed that DAO,PLA2G1B,SLCO1B3 and TFAP2A were essential targets via which WOG affected lung cancer survival.Moreover,BDNF,FGF2,and PTGS1 were predicted to be the targets via which WOG alleviated cancer proliferation and invasion in bladder cancer.As for colon cancer,WOG might induce autophagy and inhibit proliferation by down-regulating NTF4 and TH.The study will provide clue for using wOG as a promising antineoplastic agent in basic and translational research,and bring light to the application of herbs containing WOG as food supplements.

关键词： Wogonin Targets Lung cancer Bladder cancer Colon cancer

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钒酸铋光电催化分解水的研究进展

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科学通报 2022年第19期67卷 2115-2125页

作者：叶凯航汤桐鑫梁志庭纪红兵林展杨世和广东工业大学轻工化工学院广州市清洁交通能源化学重点实验室广州510006 北京大学深圳研究生院化学生物学与生物技术学院广东省纳米微米材料研究重点实验室深圳518055 中山大学化学学院精细化工研究院广州510275

光电化学(photoelectrochemical,PEC)催化分解水制氢被认为是生态友好、规模化和可持续性地转化与储存太阳能的理想途径之一,但光阳极较低的工作效率限制了PEC分解水的发展.近年来,钒酸铋光阳极因具有较高的理论光电流密度受到科学界的... 详细信息

光电化学(photoelectrochemical,PEC)催化分解水制氢被认为是生态友好、规模化和可持续性地转化与储存太阳能的理想途径之一,但光阳极较低的工作效率限制了PEC分解水的发展.近年来,钒酸铋光阳极因具有较高的理论光电流密度受到科学界的广泛关注.大量的工作聚焦在如何将钒酸铋光阳极所具有的理论潜力尽可能地发挥并应用至PEC分解水制氢.本文通过回顾和分析钒酸铋光阳极的吸光效率、光生载流子分离效率与表面催化产氧效率3个方面的研究进展,对高性能钒酸铋光阳极的设计思路与合成方法进行评述、总结与展望,为进一步挖掘钒酸铋光电极的潜力与开发下一代光电极提供参考和思路.

关键词：光电催化分解水钒酸铋光阳极

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Vitamin D-binding protein in plasma microglia-derived extracellular vesicles as a potential biomarker for major depressive disorder

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Genes & Diseases 2024年第2期11卷 1009-1021页

作者： Gaojia Zhang Ling Li Yan Kong Dandan Xu Yu Bao zhiting Zhang Zhixiang Liao Jiao Jiao Dandan Fan Xiaojing Long Ji Dai Chunming Xie Zhiqiang Meng Zhijun Zhang Department of Neurology Affiliated Zhongda HospitalResearch Institution of NeuropsychiatrySchool of MedicineSoutheast UniversityNanjingJiangsu 210009China Department of Biochemistry and Molecular Biology School of MedicineSoutheast UniversityNanjingJiangsu 210009China Shenzhen Key Laboratory of Drug Addiction Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of Sciences (CAS)ShenzhenGuangdong 518000China CAS Key Laboratory of Brain Connectome and Manipulation The Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Lauterbur Research Center for Biomedical Imaging Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Shenzhen-Hong Kong Institute of Brain Sciences-Shenzhen Fundamental Research Institutions ShenzhenGuangdong 518000China Brain Cognition and Brain Disease Institute Department of Mental Health and Public HealthFaculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China

No well-established biomarkers are available for the clinical diagnosis of major depressive disorder(MDD).Vitamin D-binding protein(VDBP)is altered in plasma and postmortem dorsolateral prefrontal cortex(DLPFC)tissues of MDD patients.Thereby,the role of VDBP as a potential biomarker of MDD diagnosis was further assessed.Total extracellular vesicles(EVs)and brain cell-derived EVs(BCDEVs)were isolated from the plasma of first-episode drug-naïve or drug-free MDD patients and well-matched healthy controls(HCs)in discovery(20 MDD patients and 20 HCs)and validation cohorts(88 MDD patients and 38 HCs).VDBP level in the cerebrospinal fluid(CSF)from chronic glucocorticoid-induced depressed rhesus macaques or prelimbic cortex from lipopolysaccharide(LPS)-induced depressed mice and wild control groups was measured to evaluate its relationship with VDBP in plasma microglia-derived extracellular vesicles(MDEVs).VDBP was significantly decreased in MDD plasma MDEVs compared to HCs,and negatively correlated with HAMD-24 score with the highest diagnostic accuracy among BCDEVs.VDBP in plasma MDEVs was decreased both in depressed rhesus macaques and mice.A positive correlation of VDBP in MDEVs with that in CSF was detected in depressed rhesus macaques.VDBP levels in prelimbic cortex microglia were negatively correlated with those in plasma MDEVs in depressed mice.The main results suggested that VDBP in plasma MDEVs might serve as a prospective candidate biomarker for MDD diagnosis.

关键词： Biomarker Cerebrospinal fluid Major depressive disorder Microglia derived extracellular vesicles Vitamin-D binding protein

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Fully implantable wireless brain-computer interface for humans: Advancing toward the future

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The Innovation 2024年第3期5卷 3-4页

作者： zhiting Zhang Ji Dai Shenzhen Technological Research Center for Primate Translational Medicine Shenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China CAS Key Laboratory of Brain Connectome and Manipulation the Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Guangdong Provincial Key Laboratory of Brain Connectome and Behavior Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China

On January 29,2024,Elon Musk made a public announcement via social media about the successful implantation of a Neuralink device in humans.Shortly after,a collaborative team from Xuanwu Hospital and Tsinghua University in China revealed the advancements in their clinical experiment testing the Neural Electronic Opportunity(NEO)—a wireless brain-computer interface(BCI).1 These simultaneous developments sparked widespread interest and renewed enthusiasm for BCIs worldwide.

关键词： wireless computer interface

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大模型支持的会话辅导系统开发:范式转换、架构设计与能力训练

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现代远程教育研究 2024年第3期36卷 11-19页

作者：刘华祝智庭泰州学院教育科学学院江苏泰州225300 华东师范大学开放教育学院上海200062

会话辅导系统是智能辅导系统的一种特殊形态或拓展形式,主要通过模仿人类导师进行个别化、适应性的教学对话,实现个性化教学功能。受制于技术发展水平,传统会话辅导系统存在一些根本性缺陷,如缺乏通用性与灵活性、开发成本高昂、推广困... 详细信息

会话辅导系统是智能辅导系统的一种特殊形态或拓展形式,主要通过模仿人类导师进行个别化、适应性的教学对话,实现个性化教学功能。受制于技术发展水平,传统会话辅导系统存在一些根本性缺陷,如缺乏通用性与灵活性、开发成本高昂、推广困难、准确性不足等。大模型为会话辅导系统的升级带来了巨大机遇,将引发会话辅导系统的开发范式转换:开发目标由原先的“排演对话教学片断”升级为“自主开展完整对话教学”,开发逻辑由以“预设”与“匹配”为核心转换为以“微调”与“链接”为核心。为此,会话辅导系统由原来的内外双循环架构,拓展为外循环—中循环—内循环的三重嵌套循环架构模式,以实现学习者对话片段、学习任务完成过程,以及课程学习历程的完美融合。而针对系统架构中关键且存在技术瓶颈的教学设计能力、对话设计与生成能力,可以通过学习任务分析路由链、教学设计顺序链、教学对话路由链等复杂的提示语工程,以及使用优质的元认知标注数据、对话教学案例标注数据以及历史数据+RLHF技术微调大模型等办法加以训练,以此提高会话辅导系统开展对话教学的质量和效果。

关键词：会话辅导系统大语言模型多模态大模型对话教学

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融合创新:数智技术赋能高等教育的新质发展

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开放教育研究 2024年第3期30卷 4-14页

作者：祝智庭戴岭华东师范大学开放教育学院上海200062 华东师范大学教育学部上海200062

高等教育作为人才第一资源、研究第一平台、创新第一动力的重要结合点,是推动新质生产力快速发展的重要力量。融合创新作为数智技术赋能高教新质发展的新战略,具有理论创新、思维创新、研究范式创新和实践创新的复合属性。本文首先提出... 详细信息

高等教育作为人才第一资源、研究第一平台、创新第一动力的重要结合点,是推动新质生产力快速发展的重要力量。融合创新作为数智技术赋能高教新质发展的新战略,具有理论创新、思维创新、研究范式创新和实践创新的复合属性。本文首先提出要将融合创新研究和融合创新教育作为跨学科研究的新境界和数智赋能教育创新的新范式,接着深入探讨两者的内涵要素、逻辑机理和实施路径,最后提出以融合创新研究和融合创新教育培养融合创新人才、构建基于团队科学的融合创新文化、改进高等教育融合创新治理体系等促进我国高等教育融合创新发展的策略与建议。

关键词：新质生产力融合创新融合创新研究融合创新教育设计研究融合创新文化

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CVD-SiC阵列结构对ZrB_(2)/SiC涂层抗烧蚀性影响

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航空学报 2024年第3期45卷 261-274页

作者：高志廷马壮柳彦博北京理工大学材料科学与工程学院北京100081 北京理工大学重庆创新中心重庆401120

采用飞秒激光在化学气相沉积(CVD)-SiC中间层表面制备不同尺寸的阵列,研究了阵列结构对ZrB_(2)/SiC涂层性能的影响。结果表明,随着激光刻蚀频次的增大,阵列结构的深度从30μm增大到150μm。采用氧乙炔烧蚀600 s,ZrB_(2)/SiC涂层烧蚀表... 详细信息

采用飞秒激光在化学气相沉积(CVD)-SiC中间层表面制备不同尺寸的阵列,研究了阵列结构对ZrB_(2)/SiC涂层性能的影响。结果表明,随着激光刻蚀频次的增大,阵列结构的深度从30μm增大到150μm。采用氧乙炔烧蚀600 s,ZrB_(2)/SiC涂层烧蚀表面温度随CVD-SiC微结构深度增大而逐步降低,最低的表面温度达到1700℃,下降了约200℃。烧蚀中心区域的颜色从白色过渡到浅灰色。对于激光刻蚀频次为5的试样,在600 s的单次烧蚀后,质量烧蚀率和线性烧蚀率分别为-7.4×10^(-5)g/s和-13.3μm/s。阵列结构增大了ZrB_(2)/SiC涂层与CVD-SiC中间层的接触面积,从而增强了导热性能,减少了热积聚,进而改善了ZrB_(2)/SiC涂层的抗烧蚀性能。

关键词：阵列结构烧蚀等离子喷涂 C/C复合材料 CVD-SiC 激光刻蚀

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