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Updated: Jun 6, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
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Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

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双 (氧) 氧化物协同催化剂协同增强太阳能水分离BiVO的光电极4

Youyi Su1, Yian Du1, Ruyu Yan1

  • 1School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500., P.R. China.

Chemistry, an Asian journal
|November 26, 2024
PubMed
概括

一种新型的双催化剂涂层在木瓦纳酸盐 (BiVO4) 光电极上显著提高了光电化学水分裂效率和稳定性. 这种方法可以改善光电流和减少退化,为大面积应用铺平了道路.

关键词:
比斯穆特瓦纳达特 (Bismuth vanadate) 是一种天然气.的氧化 的氧化双重的共催化剂可以实现.铁氧化水氧化物 铁氧化水氧化物光电化学水分离器的使用

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Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
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Cycloaddition Reactions: MO Requirements for Photochemical Activation

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Alkenes can be dihydroxylated using potassium permanganate.  The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
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Ozone is a symmetrical bent molecule stabilized by a resonance structure.
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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
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