一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

ChemicalBook >> journal list >> ACS Combinatorial Science >>article
ACS Combinatorial Science

ACS Combinatorial Science

IF: 3.78
Download PDF

The effect of enantioselective chiral covalent organic frameworks and cysteine sacrificial donors on photocatalytic hydrogen evolution.

Published:1 October 2022 DOI: 10.1038/s41467-022-33501-8 PMID: 36182957
Weijun Weng, Jia Guo

Abstract

Covalent organic frameworks (COFs) have constituted an emerging class of organic photocatalysts showing enormous potential for visible photocatalytic H2 evolution from water. However, suffering from sluggish reaction kinetics, COFs often cooperate with precious metal co-catalysts for essential proton-reducing capability. Here, we synthesize a chiral β-ketoenamine-linked COF coordinated with 10.51?wt% of atomically dispersed Cu(II) as an electron transfer mediator. The enantioselective combination of the chiral COF-Cu(II) skeleton with L-/D-cysteine sacrificial donors remarkably strengthens the hole extraction kinetics, and in turn, the photoinduced electrons accumulate and rapidly transfer via the coordinated Cu ions. Also, the parallelly stacking sequence of chiral COFs provides the energetically favorable arrangement for the H-adsorbed sites. Thus, without precious metal, the visible photocatalytic H2 evolution rate reaches as high as 14.72?mmol?h-1?g-1 for the enantiomeric mixtures. This study opens up a strategy for optimizing the reaction kinetics and promises the exciting potential of chiral COFs for photocatalysis.

Substances (2)

Materials
Procduct Name CAS Molecular Formula Supplier Price
2,4,6-Triformylphloroglucinol 34374-88-4 C9H6O6 162 suppliers $6.00-$4666.00
2,4,6-Triformylphloroglucinol 34374-88-4 C9H6O6 162 suppliers $6.00-$4666.00

Similar articles

IF:2.3

Effect of polyether diamine on gas permeation properties of organic-inorganic hybrid membranes

Journal of Sol-Gel Science and Technology Chunwon Lim, Suk-In Hong,etc Published: 21 March 2007
IF:3.9

Novel choline-chloride-based deep-eutectic-solvents with renewable hydrogen bond donors: levulinic acid and sugar-based polyols

RSC Advances Zaira Maugeri and Pablo Domínguez de María,etc Published: 18 November 2011
枞阳县| 扶绥县| 青岛市| 莲花县| 建始县| 井冈山市| 黄大仙区| 大连市| 淳安县| 黄大仙区| 青海省| 麦盖提县| 儋州市| 丹东市| 茂名市| 敖汉旗| 灵川县| 沂源县| 白朗县| 双城市| 当阳市| 资源县| 青铜峡市| 南雄市| 彰化县| 土默特左旗| 云龙县| 静海县| 新源县| 青河县| 景谷| 阿克| 泽普县| 青龙| 革吉县| 岐山县| 墨竹工卡县| 商河县| 新巴尔虎左旗| 石屏县| 德化县|