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Extending aromatic acids on TiO_(2)for cooperative photocatalysis with triethylamine:Violet light-induced selective aerobic oxidation of sulfides

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Chinese Chemical Letters 2022年第8期33卷 3733-3738页

作者： Hui Li Xia Li Jun Zhou Wenlong Sheng Xianjun Lang Sauvage Center for Molecular Sciences College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China

Designing visible light photocatalysts with a metal oxide semiconductor as the starting material could expand a new horizon for the conversion and storage of solar ***,the benchmark photocatalyst TiO_(2) was used to pursue this goal by anchoring aromatic *** the aromatic acid was strategically deployed to design TiO_(2) complexes with violet light-induced selective aerobic oxidation of sulfide as the probe *** benzoic acid(BA)as the initial molecule,horizontally extending one or two benzene rings furnishes 2-naphthoic acid(2-NA)and 2-anthracene acid(2-AA).Moreover,triethylamine(TEA),an electron transfer mediator,was introduced to maintain the integrity of the anchored aromatic ***,there was a direct correlation between theπ-conjugation of aromatic acid ligand and the selective aerobic oxidation of *** the three aromatic acids,2-AA delivered the best result over TiO_(2) due to the most extensiveπ-conjugated ***,violet light-induced selective aerobic oxidation of sulfides into corresponding sulfoxides was conveniently realized by cooperative photocatalysis of 2-AA-TiO_(2) with 10 mol%of *** work affords an extending strategy for designing the next-generation ligands for semiconductors to expand visible light-induced selective reactions.

关键词： Aromatic acid Extendingπ-conjugation complex photocatalyst Oxidation of sulfides Cooperative photocatalysis

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Synthesis and photocatalytic activity of TiO_2/conjugated polymer complex nanoparticles

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Chinese Chemical Letters 2008年第6期19卷 742-746页

作者： Shi Xiong Min Fang Wang Lei Feng Yong Chun Tong Zi Rong Yang Department of Chemistry Key Laboratory of Resources and Environmental Chemistry of West China Hexi University Zhangye 734000 China

A photocatalyst of nanometer TiO2/conjugated polymer complex was successfully synthesized and characterized by spectroscopic methods and photocatalytic experiments. The complex photocatalyst could be activated by absorbing both ultraviolet and visible light （λ = 190-800 nm）. Methylene blue （MB） could be degraded more efficiently on the complex photocatalyst than on the TiO2 under natural light. The conjugated polymer played a promoting role in the photocatalytic degradation of MB. The calcination temperature had an important effect in degradation of dye and could be summarized as 260℃ 〉 300 ℃ 〉 340 ℃ 〉 220 ℃ 〉 180 ℃.

关键词： TiO2 Conjugated polymer complex photocatalyst Methylene blue Degradation Natural light

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