<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hou, Yanghui</style></author><author><style face="normal" font="default" size="100%">Peng Zhou</style></author><author><style face="normal" font="default" size="100%">Fuyang Liu</style></author><author><style face="normal" font="default" size="100%">Lu, Yanyu</style></author><author><style face="normal" font="default" size="100%">Tan, Hao</style></author><author><style face="normal" font="default" size="100%">Li, Zhengmao</style></author><author><style face="normal" font="default" size="100%">Meiping Tong</style></author><author><style face="normal" font="default" size="100%">Ni, Jinren</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Photosynthesis of Hydrogen Peroxide by Cyano-Containing Covalent Organic Frameworks from Water, Air and Sunlight</style></title><secondary-title><style face="normal" font="default" size="100%">Angewandte Chemie International Edition</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Charge Transfer Channels</style></keyword><keyword><style  face="normal" font="default" size="100%">Covalent organic frameworks</style></keyword><keyword><style  face="normal" font="default" size="100%">Donor-Acceptor</style></keyword><keyword><style  face="normal" font="default" size="100%">H2O2 Photosynthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">Practical Application</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2024</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202318562</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">63</style></volume><pages><style face="normal" font="default" size="100%">e202318562</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Abstract The insufficient exciton (e−-h+ pair) separation/transfer and sluggish two-electron water oxidation are two main factors limiting the H2O2 photosynthetic efficiency of covalent organic frameworks (COFs) photocatalysts. Herein, we present an alternative strategy to simultaneously facilitate exciton separation/transfer and reduce the energy barrier of two-electron water oxidation in COFs via a dicyano functionalization. The in situ characterization and theoretical calculations reveal that the dicyano functionalization improves the amount of charge transfer channels between donor and acceptor units from two in COF-0CN without cyano functionalization to three in COF-1CN with mono-cyano functionalization and four in COF-2CN with dicyano functionalization, leading to the highest separation/transfer efficiency in COF-2CN. More importantly, the dicyano group activates the neighbouring C atom to produce the key *OH intermediate for effectively reducing the energy barrier of rate-determining two-electron water oxidation in H2O2 photosynthesis. The simultaneously enhanced exciton separation/transfer and two-electron water oxidation in COF-2CN result in high H2O2 yield (1601 μmol g−1 h−1) from water and oxygen without using sacrificial reagent under visible-light irradiation. COF-2CN can effectively yield H2O2 in water with wide pH range, in different real water samples, in scaled-up reactor under natural sunlight irradiation, and in continuous-flow reactor for consecutively producing H2O2 solution for water decontamination.</style></abstract></record></records></xml>