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Ultralow-Energy-Barrier H_(2)O_(2)Dissociation on Coordinatively Unsaturated Metal Centers in Binary Ce-Fe Prussian Blue Analogue for Efficient and Stable Photo-Fenton Catalysis

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Energy & Environmental Materials 2023年第6期6卷 427-435页

作者： Wenting Zheng Hui Guo changqing zhu Cailiang Yue Wenlei zhu Fuqiang Liu Zhaoxu Chen State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Institute of Theoretical and Computational Chemistry Key Laboratory of Mesoscopic Chemistry of MOESchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

The low intrinsic activity of Fenton catalytic site and high demand for light-energy input inhibit the organic-pollution control efficiency of photo-Fenton ***,through structural design with density functional theory(DFT)calculations,Ce is predicted to enable the construction of coordinatively unsaturated metal centers(CUCs)in Prussian blue analogue(PBA),which can strongly adsorb H_(2)O_(2)and donate sufficient electrons for directly splitting the O-O bond to *** a substitution-co-assembly strategy,binary Ce-Fe PBA is then prepared,which rapidly degrades sulfamethoxazole with the pseudo-first-order kinetic rate constant exceeding reported values by 1-2 orders of ***,the photogenerated electrons reduce Fe(Ⅲ)and Ce(Ⅳ)to promote the metal valence cycle in CUCs and make sulfamethoxazole degradation efficiency only lose 6.04%in 5 ***,by introducing rare earth metals into transition metal-organic frameworks,this work guides the whole process for highly active CUCs from design and construction to mechanism exploration with DFT calculations,enabling ultrafast and stable photo-Fenton catalysis.

关键词： Ce substitution coordinatively unsaturated metal centers photo-Fenton Prussian blue analogue

Peroxyoxalate Chemiluminescence Based on Fluorescent Conjugated Polymer for the Determination of Triton X-IO0

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Chinese Journal of Chemistry 2011年第3期29卷 575-580页

作者： Jin, Yingqiong Sun, Lilin Hao, Dan Yu, Rui Qian, Zhangsheng zhu, changqing Anhui Key Laboratory of Chemo-Biosensing College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241000 China

A novel peroxyoxalate chemiluminescence system has been designed for the determination of Triton X-100 （TX-100）, in which a hydrophobic fluorescent conjugated polymer, poly[2,5-bisnonyloxy-1,4-phenyleneethynylene-9,10-anthrylene] （PPEA） was employed as a fluorophor. A strong enhanced intensity of chemiluminescence （CL） was observed in the presence of TX-100, due to the improved emission efficiency of PPEA in the presence of TX-100. Under optimum conditions, the detection range of Triton X-100 is between 1.0 ×10 ^-7 and 1.0 ×10 ^-4 mol·L ^-1, with a detection limit at 6.0×10 ^-8 moloL 1. The relative standard deviation is 2.4% （n=6） for 1.0×10 ^-6 mol·L ^-1Triton X-100. This method provides satisfying results in the detection of TX-100 in nature water and biological samples with high sensitivity and wide linear range.

关键词： peroxyoxalate chemiluminescence triton X-100 fluorescent conjugated polymers

Synergistic co-removal of zinc(Ⅱ) and cefazolin by a Fe/amine-modified chitosan composite

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Chinese Chemical Letters 2019年第12期30卷 2196-2200页

作者： Chen Ling Yixuan Zhao Zixi Ren Jiangang Han changqing zhu Fu-Qiang Liu College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

A novel Fe/amine modified chitosan composite(Fe/N-CS) was facilely synthesized and showed higher affinity to both Zn(Ⅱ) and cefazolin(CEF) than its *** co-adsorption of them by Fe/NCS was observed in varied *** adsorption amount maximally increased by 100.1% for Zn and68.2% for CEF in bi-solute *** initial adsorption rate of Zn(Ⅱ) also improved with *** increasing temperature facilitated *** results of the preloading tests,FTIR/XPS characterizations and DFT calculations suggested that(1) both polyamines and Fe sites participated in the adsorption of Zn(Ⅱ) and CEF,(2) Zn(Ⅱ) could serve as a new efficient site for CEF,forming [amineZn-CEF]/[FeOH-Zn-CEF] ternary complexes,and(3) the co-presence of CEF shielded the electrostatic repulsion between protonated amines and Zn(Ⅱ),contributing to the enhancement of Zn(Ⅱ) ***,the ion strength exerted positive and negative influences on the adsorption of Zn(Ⅱ) and CEF,***,CEF and Zn(Ⅱ) were successively recovered by 0.1 mol/L NaOH followed by2 mmol/L ***/N-CS could be stably reused five *** findings imply that Fe/N-CS is promising for the highly efficient co-removal of concurrent heavy metals and antibiotics.

关键词： Coadsorption Heavy metal ions Antibiotics Biomass Bridging effect Polyamine Hydrous ferric oxide

A Facile Self-assembly Synthesis of Hexagonal ZnO Nanosheet Films and Their Photoelectrochemical Properties

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Nano-Micro Letters 2016年第2期8卷 137-142页

作者： Bin Zhang Faze Wang changqing zhu Qiang Li Jingnan Song Maojun Zheng Li Ma Wenzhong Shen Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) Department of Physics and Astronomy Shanghai Jiao Tong University Collaborative Innovation Center of Advanced Microstructures Nanjing University School of Chemistry & Chemical Technology Shanghai Jiao Tong University

Here, large-scale and uniform hexagonal zinc oxide(ZnO) nanosheet films were deposited onto indium tin oxide(ITO)-coated transparent conducting glass substrates via a facile galvanic displacement deposition process. Compared with other commonly used solution methods, this process avoids high temperature and electric power as well as supporting agents to make it simple and cost-effective. The as-fabricated ZnO nanosheet films have uniform hexagonal wurtzite structure. The photoelectrochemical(PEC) cell based on ZnO nanosheet film/ITO photoelectrode was also fabricated and its performance was improved by optimizing the solution concentration. A higher photocurrent density of*500 l A cm^(-2)under AM 1.5 G simulated illumination of 100 m W cm^(-2)with zero bias potential(vs. Ag/AgCl electrode) was obtained, which may ascribe to the increased surface-to-volume ratio of disordered Zn O nanosheet arrays. Our developed method may be used to deposit other oxide semiconductors, and the Zn O nanosheet film/ITO PEC cell can be used to design low-cost optoelectronic and photoelectrochemical devices.

关键词： Zinc oxide Nanosheet film Self-assemble Galvanic displacement method Photoelectrochemical property

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地理数据数字水印和加密控制技术研究进展

测绘学报 2017年第10期46卷 1609-1619页

作者：朱长青南京师范大学虚拟地理环境教育部重点实验室江苏南京210023 江苏省地理信息资源开发与利用协同创新中心江苏南京210023

随着地理数据应用和共享需求的迅速增长,地理数据安全问题日益凸显。地理数据安全问题不仅影响着地理信息产业的健康发展,更关系着国家安全和国防建设。数字水印与加密控制技术是地理数据安全保护的前沿技术和有效手段,近年来相关技术... 详细信息

随着地理数据应用和共享需求的迅速增长,地理数据安全问题日益凸显。地理数据安全问题不仅影响着地理信息产业的健康发展,更关系着国家安全和国防建设。数字水印与加密控制技术是地理数据安全保护的前沿技术和有效手段,近年来相关技术研究和应用也得到了深入发展。本文针对地理数据数字水印技术和加密控制技术,介绍了其研究背景和需求,综述和评价了其理论、模型及算法的研究进展,论述了其在实际中的软件研发和应用现状,并根据地理信息产业和信息技术的发展趋势,展望了其理论研究和应用开发的未来发展方向。

关键词：地理数据安全数字水印加密控制进展应用

Numerical Simulation of Temperature Field in Nanostructured Al_2O_3-13TiO_2 Feedstock in Supersonic Plasma Spraying

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稀有金属材料与工程 2012年第S1期41卷 81-84页

作者： Li changqing,zhu Youli,Ma Shining,Song Wei Department of Remanufacture Engineering,Academy of Armored Force Engineering,Beijing 100072,China Acad Armored Forces Engn Dept Remanufacture Engn Beijing 100072 Peoples R China

Velocity and temperature of nanostructured Al2O3-13TiO2 feedstocks in supersonic plasma spraying was detected applying CCD thermal spray *** on the detect results,temperature field in the feedstock in spraying process was analyzed via finite element *** shows that the highest velocity of the flying particles exceed to 800m/*** the increase of spraying distance,velocity decline *** temperature of the feedstock increase firstly and then decrease and the highest temperature exceed to 2600℃.Internal temperature of the feedstock is higher than the melting point when the distance reaches to *** the spraying distance increase,temperature gradient in the particle decreased gradually.

关键词： supersonic plasma spraying nanostructured feedstock CCD image analysis numerical simulation

Existence of Random Attractor Family for a Class of Nonlinear Higher-Order Kirchhoff Equations

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International Journal of Modern Nonlinear Theory and Application 2019年第2期8卷 41-52页

作者： Guoguang Lin changqing zhu School of Mathematics and Statistics Yunnan University Kunming China

The existence of random attractor family for a class of nonlinear nonlocal higher-order Kirchhoff partial differential equations with additive white noise is studied. The weak solution of the equation is established by the Ornstein-Uhlenbeck process to deal with the random term, and a bounded random absorption set is obtained. And then, the existence of the random attractor family is proved by the isomorphism mapping method.

关键词： Stochastic Dynamical Systems Random Attractor Family White Noise Ornstein-Uhlenbeck Process Tempered Sets

Fast Growth of Highly Ordered TiO2 Nanotube Arrays on Si Substrate under High-Field Anodization

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Nano-Micro Letters 2017年第2期9卷 3-13页

作者： Jingnan Song Maojun Zheng Bin Zhang Qiang Li Faze Wang Liguo Ma Yanbo Li changqing zhu Li Ma Wenzhong Shen Key Laboratory of Artificial Structure and Quantum Control Ministry of EducationDepartment of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093People’s Republic of China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China School of Chemistry and Chemical Technology Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Highly ordered TiO_2 nanotube arrays(NTAs) on Si substrate possess broad applications due to its high surfaceto-volume ratio and novel functionalities, however, there are still some challenges on facile synthesis. Here, we report a simple and cost-effective high-field(90–180V) anodization method to grow highly ordered TiO_2 NTAs on Si substrate,and investigate the effect of anodization time, voltage, and fluoride content on the formation of TiO_2 NTAs. The current density–time curves, recorded during anodization processes, can be used to determine the optimum anodization time. It is found that the growth rate of TiO_2 NTAs is improved significantly under high field, which is nearly 8 times faster than that under low fields(40–60 V). The length and growth rate of the nanotubes are further increased with the increase of fluoride content in the electrolyte.

关键词： TiO2 nanotube arrays Si substrate Anodization High field Controllable preparation

Regulation of fruit ripening by the brassinosteroid biosynthetic gene SlCYP90B3 via an ethylenedependent pathway in tomato

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Horticulture Research 2020年第1期7卷 690-702页

作者： Songshen Hu Lihong Liu Shuo Li Zhiyong Shao Fanliang Meng Haoran Liu Wenyi Duan Dongyi Liang changqing zhu Tao Xu Qiaomei Wang State Agricultural Ministry Laboratory of Horticultural Crop Growth and Development Department of HorticultureZhejiang UniversityHangzhou 310058China Key Laboratory of Protected Horticulture of Ministry of Education College of HorticultureShenyang Agricultural UniversityShenyang 110866China

The essential role of ethylene in fruit ripening has been thoroughly ***,the involvement of brassinosteroids(BRs)in the regulation of fruit ripening and their relationship with the ethylene pathway are poorly *** the current study,we found that BRs were actively synthesized during tomato fruit *** then generated transgenic lines overexpressing or silencing SlCYP90B3,which encodes a cytochrome P450 monooxygenase that catalyzes the rate-limiting step of BR *** expression level of SlCYP90B3 was positively related to the contents of bioactive BRs as well as the ripening process in tomato fruit,including enhanced softening and increased soluble sugar and flavor volatile *** carotenoid accumulation and ethylene production were strongly correlated with the expression level of SlCYP90B3,corroborated by the altered expression of carotenoid biosynthetic genes as well as ethylene pathway genes in transgenic tomato ***,the application of the ethylene perception inhibitor 1-methycyclopropene(1-MCP)abolished the promotion effect of SlCYP90B3 overexpression on carotenoid *** together,these results increase our understanding of the involvement of SlCYP90B3 in bioactive BR biosynthesis as well as fruit ripening in tomato,thus making SlCYP90B3 a target gene for improvement of visual,nutritional and flavor qualities of tomato fruits with no yield penalty.

关键词： sugar involvement promotion