Construction of atomic-level charge transfer channel in Bi_(12)O_(17)C_(l2)/MXene heterojunctions for improved visible-light photocatalytic performance

作     者：Song-Song Cui Xuan Liu Yin-Biao Shi Ming-Ye Ding Xiao-Fei Yang Song-Song Cui;Xuan Liu;Yin-Biao Shi;Ming-Ye Ding;Xiao-Fei Yang

作者机构：College of ScienceNanjing Forestry UniversityNanjing 210037China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第7期

页      面：2405-2416页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：financially supported by the Natural Science Foundation of Jiangsu Province (No. BK20211280) the National Natural Science Foundation of China (No. 21975129) 

主　　题：Photocatalysis Ti3C2 MXenes Cocatalyst Schottky junction Heterojunction Charge transfer channels 

摘      要：Exploring efficient co-catalysts to accurately steer the charge separation of semiconductor photocatalysts is highly desired yet remains ***,we tackle the significant challenge by in situ growing the Bi_(12)O_(17)C_(l2)photocatalyst onto two-dimensional(2D)Cl-terminated Ti_(3)C_(2)MXene to construct 2D/2D heterojunction of Bi_(12)O_(17)C_(l2)and Ti_(3)C_(2).Firstly,2D few-layered Ti_(3)C_(2)MXene with chlorine groups has been successfully syn-thesized by Lewis acidic etching strategy with subsequent ultrasonic *** grafting of chlorine terminations on the surface of MXene serves as nucleating centers and growth platform,resulting in the formation of strong interfacial bonds(Bi-Cl-Ti)between Bi_(12)O_(17)C_(l2)and Ti_(3)C_(2).These strong bonds can facilitate the separation and transfer of photo-generated charge carriers between Bi_(12)O_(17)C_(l2)photocatalyst and Ti_(3)C_(2)*** expec-ted,the photocatalytic degradation rate of Bi_(12)O_(17)C_(l2)/Ti_(3)C_(2)hybrids is 9.7 times higher than that of bare Bi_(12)O_(17)C_(l2)*** work not only exhibits a new design concept to effectively steer the charge separation for photocatalysis,but also gives a reference for constructing efficient MXene-based photocatalytic systems.