Clean production of lactic acid by selective carbon-carbon bond cleavage of biomass feedstock over a novel carbon-bismuth oxychloride photocatalyst  

作　　者：Zulfiqar Ali Jiliang Ma Dongnv Jin Rui Cui Runcang Sun 

机构地区：[1]Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials,Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery,College of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第2期69-81,共13页化学科学与工程前沿（英文版）

基　　金：supported by the Foundation of the NSFC-CONICFT Joint Project(Grant No.51961125207);National Natural Science Foundation of China(Grant No.22008018);Innovation Support Program for High-level Talents of Dalian(Top and Leading Talents)(Grant No.201913);Dalian City Outstanding Talent Project(Grant No.2019RD13).

摘　　要：The use of functional materials such as carbon-bismuth oxyhalides in integrated photorefineries for the clean production of fine chemicals requires restructuring.A facile biomass-assisted solvothermal fabrication of carbon/bismuth oxychloride nanocomposites(C/BiOCl)was achieved at various temperatures.Compared with BiOCl and C/BiOCl-120,C/BiOCl-180 exhibited higher crystallinity,wider visible light absorption,and a faster migration/separation rate of photoinduced carriers.For the selective C–C bond cleavage of biomass-based feedstocks photocatalyzed by C/BiOCl-180,the xylose conversion and lactic acid yield were 100%and 92.5%,respectively.C/BiOCl-180 efficiently converted different biomass-based monosaccharides to lactic acid,and the efficiency of pentoses was higher than that of hexoses.Moreover,lactic acid synthesis was favored by all active radicals including superoxide ion(·O_(2)^(−)),holes(h^(+)),hydroxyl radical(·OH),and singlet oxygen(^(1)O_(2)),with·O_(2)^(−)playing a key role.The fabricated photocatalyst was stable,economical,and recyclable.The use of biomass-derived monosaccharides for the clean production of lactic acid via the C/BiOCl-180 photocatalyst has opened new research horizons for the investigation and application of C–C bond cleavage in biomass-based feedstocks.

关 键 词：carbon-carbon bond cleavage biomass reforming C/BiOCl lactic acid photocatalysis 

分 类 号：O65[理学—分析化学]