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Synthesis and Spectral Characteristics for Zinc Tetraphenylporphyrin Modified Zinc Oxide Nanowires

光谱学与光谱分析 2016年第S1期36卷 427-428页

作者： HUANG Hui-han KE Jian-xi XIE Wen-qiang PAN Hai-bo College of Chemistry Fuzhou UniversityFuzhou 350116 China

A nest-like architectures(ZnO NAs)were prepared onto the conductive glass(ITO)by hydrothermal method.A metal-free porphyrin,tetraphenylporphyrin(H2TPP),was synthesized via Adler *** ions with Zn-unsaturated coordination bonds on the surface of ZnO NAs were used as a template,and also H2TPP was used as"molecular fragments".Zinc tetraphenylporphyrin(ZnTPP)molecules were obtained on the surface of ZnO NAs by in-situ *** NAs direct provides of zinc source makes ZnTPP stably coated on the surface of ZnO NAs nanosheet,formed a tight composite materials(ZnTPP/ZnO NAs).Due toZnTPP with four phenyls in meso position,the surface of ZnTPP/ZnO NAs was with hydrophobic *** the photocatalytic experiment,the degradation selectivity for phenol(hydrophobicity)in the mixture of phenol and rhodamine B(hydrophily)was increased under visible irradiation.

关键词： ZnO In-situ Zinc tetraphenylporphyrin UV-Vis spectrum selective photocatalysis

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Enabling Reaction Selectivity of Platinum Catalysts by Photoinduced Electronic Effects

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Precision Chemistry 2023年第4期1卷 248-255页

作者： Kowsalya Devi Rasamani Xinyan Dai Matthew Messner Cunming Liu Xiaoyi Zhang Yugang Sun Department of Chemistry Temple UniversityPhiladelphiaPennsylvania 19122USA

Reaction selectivity is crucial to producing target molecules of importance with minimum *** work reports an efficient and green strategy to improve reaction selectivity in visible-light-mediated chemical transformations by employing Pt/SiOx photocatalysts,which is ascribed to light-induced surface electronic modification in the small Pt *** strategy has been successfully applied to synthesize commercially valuable but thermodynamically unfavorable arylhydroxylamines with high selectivity via partial hydrogenation of the respective *** modification of the small Pt nanocrystals with triethanolamine(TEA)molecules further optimizes the Pt electronic structure to favor the reaction *** light-induced surface electronic structure alterations and the TEA chemical modification act synergistically to prevent the readsorption of desorbed electron-rich *** prevents the complete hydrogenation of arylhydroxylamines to respective anilines,leading to high arylhydroxylamine selectivity of 81−91%.In addition,photoillumination of Pt nanocrystals always accelerates the reaction kinetics significantly regardless of their surface modification.

关键词： selective photocatalysis enhanced plasmonic absorption hot-electron-driven chemistry photoinduced adsorption/desorption dielectric scattering resonance selective hydrogenation

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Synergistic effects in N‐K_2Ti_4O_9/UiO‐66‐NH_2 composites and their photocatalysis degradation of cationic dyes

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Chinese Journal of Catalysis 2016年第3期37卷 367-377页

作者：李孙峰王幸何琴琴陈琪徐艳丽杨汉标吕盟盟魏凤玉刘雪霆合肥工业大学化学与化工学院可控化学与材料化工安徽省重点实验室安徽合肥230009

N-K2Ti4O9/UiO-66-NH2 composites synthesized by a facile solvothermal method have a core-shell structure with UiO-66-NH2 forming the shell around a N-K2Ti4O9 *** photocatalytic activities in the degradation of dyes under visible light irradiation were *** N-K2Ti4O9/UiO-66-NH2 composites exhibited higher photocatalytic activity than the pure *** synergistic effect was due to the high adsorption capacity of UiO-66-NH2 and that the two components together induced an enhanced separation efficiency of photogenerated electron-hole *** mass ratio of N-K2Ti4O9 to ZrCl4 of 3：7 in the composite exhibited the highest photocatalytic *** to the electrostatic attraction between the negatively charged backbone of UiO-66-NH2with the positively charged groups of cationic dyes,the composites were more photocatalytically active for cationic dyes than for anionic dyes.

关键词： Nitrogen-doped potassium titamate UiO-66-NH2 selective photocatalysis Synergistic effect Composite

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