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Updated: Jul 4, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
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通过Co-S和Thiophene S的合作,改善了S-doped Co-N-C上的H2O2电合成

Bingxin Dou1, Guanlong Wang1, Xiaoli Dong1

  • 1School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.

ACS applied materials & interfaces
|February 5, 2024
PubMed
概括

硫化--碳 (Co-N-C@S) 催化剂通过提高选择性和活性,显著增强过氧化 (H2O2) 电合成. 与传统催化剂相比,这种进步为H2O2生产提供了更有效的途径.

关键词:
2e− ORRR 是一个数值.同一个C−N−C@S.在 Co-S-S 中.在H2O2中,H2O2是H2O的.锡奥芬S 锡奥芬S 是一种

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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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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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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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Thermal Electrocyclic Reactions: Stereochemistry01:17

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The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
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