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Updated: Jun 3, 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

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在hm-C4N3/CdS异构中,CS债券调解了快速电荷转移,以实现高效的光催化CO2减少

Shuting Li1, Kang Zhong1, Jinman Yang1

  • 1School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China.

Journal of colloid and interface science
|January 11, 2025
PubMed
概括

一种新的hm-C4N3/CdS异构连接通过扩大光吸收和改善电荷分离来增强光催化CO2减排. 这种稳定的光催化剂有效地将二氧化碳转化为 CO 和 CH4 等有价值的产品.

关键词:
减少二氧化碳排放 (CO2) 的减少.光催化作用的光催化作用第二种类型的异质连接.hm-C ((4) N ((3)) 的意思

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Photochemical Electrocyclic Reactions: Stereochemistry

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.
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Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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