Integrating photogenerated charge carriers for hydrogen production on noble-metal free dual-photocatalyst under visible light was written by Wang, Yang;Yang, Jiawen;Qin, Xiru;Zhuang, Jiayi;Yin, Wujie;Chen, Tingting;Yao, Yong. And the article was included in Composites, Part B: Engineering in 2022.Name: (4-Methoxyphenyl)methanol This article mentions the following:
Simultaneous using photogenerated electrons and holes in one reaction to produce H2 and value-added organic intermediates hold great promise for the green synthesis of chems. and clean energy. Herein, we designed an efficient, noble-metal free and dual-photocatalyst Ni/Zn3In2S6 for simultaneous aldehydes synthesis and H2 production under visible light irradiation Due to the reasonable band structure of Zn3In2S6 and the Schottky barrier established between Zn3In2S6 and Ni, the photogenerated electrons and holes with suitable redox potentials can be spatially separated and efficiently transferred. Thereby, alcs. can be highly selective oxidized into corresponding aldehydes or carbonyl compounds at Zn3In2S6 by the holes, and the released protons can be rapidly reduced into H2 at Ni by the electrons. The H2 evolution of the optimal Ni/Zn3In2S6 can reach up to 277.2μmol h-1, which is about 6.5 and 5.3 times as high as that of the pristine Zn3In2S6 and the Pt/Zn3In2S6, resp. Ni/Zn3In2S6 also shows the stability and general applicability for other aromatic and non-aromatic alcs. Compared with NiSx, NiOx and Ni2+ cocatalysts, the metallic state of Ni is the key to achieving these photoredox reactions for effective utilization of photoexcited holes and electrons in one reaction system. During the photoredox reactions, two protons derived from O-H and Cα-H are abstracted from alcs. and then reduced into H2 by the photogenerated electrons. At the same time, alcs. are oxidized into aldehydes or carbonyl compounds by the photogenerated holes. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Name: (4-Methoxyphenyl)methanol).
(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Name: (4-Methoxyphenyl)methanol
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem