Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin

doi:10.1016/j.apcatb.2017.08.057

	Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin
	Sun, Xiang 1; Jiang, Dong ; Zhang, Ling ; Wang, Wenzhong
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2018
卷号	220 页码:553
关键词	C-C coupling Photocatalysis g-C3N4 Alkali modification Benzoin
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2017.08.057
英文摘要	Benzoin is an important feedstock with high additional value for its extensive use in chemical industry. Benzoin condensation characterized by C-C coupling between benzaldehyde requires the use of nucleophilic catalysts including cyanide or N-heterocyclic carbene and is restricted to organic medium such as MeCN, diethyl ether, etc. Construction of efficient and non-toxic catalysts for benzoin synthesis still remains a challenge. Herein, highly selective (97%) benzoin synthesis from benzyl alcohol was achieved over potassium modified g-C3N4 via light-driven tandem selective oxidation and C-C coupling. The outstanding performance was attributed to alkali modifications on the electronic structure and surface chemical environment of g-C3N4.K+ intercalation not only facilitated the light harvesting as well as the transport of charge carriers, but also induced surface deprotonation of g-C3N4 and thus remarkable nucleophilicity for prompting the C-C coupling reactions. This work sheds light on the design of earth-abundant inorganic photocatalysts for C-C coupling reactions such as the green synthesis of benzoin under ambient conditions.
学科主题	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000412957200054
资助机构	We acknowledge the financial support from the 973 Program (2013CB933200) and National Natural Science Foundation of China (51472260) ; We acknowledge the financial support from the 973 Program (2013CB933200) and National Natural Science Foundation of China (51472260)
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24616]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiang,Jiang, Dong,Zhang, Ling,et al. Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,220:553, 560.
APA	Sun, Xiang,Jiang, Dong,Zhang, Ling,&Wang, Wenzhong.(2018).Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin.APPLIED CATALYSIS B-ENVIRONMENTAL,220,553.
MLA	Sun, Xiang,et al."Alkaline modified g-C3N4 photocatalyst for high selective oxide coupling of benzyl alcohol to benzoin".APPLIED CATALYSIS B-ENVIRONMENTAL 220(2018):553.