Effect of hydrogen sources toward the CO2 photoreduction on boron decorated crystalline carbon nitride - Details

author：

Kong, Yuehua (Kong, Yuehua.) ^[1] | Pan, Junhui (Pan, Junhui.) ^[2] | Li, Yi (Li, Yi.) ^[3] (Scholars：李奕) | Zhang, Yongfan (Zhang, Yongfan.) ^[4] (Scholars：章永凡) | Lin, Wei (Lin, Wei.) ^[5] (Scholars：林伟)

Indexed by：

EI Scopus SCIE

Abstract：

Photocatalytic　CO2　conversion　to　industrial　fuels　is　considered　an　effective　measure　to　solve　energy　and　environmental　problems.　Presently,　Catalysts　for　CO2　reduction　reaction　(CO2RR)　are　mostly　confined　to　metal-based　materials,　but　non-metal　materials　are　less　explored.　We　decorate　the　highly　crystalline　carbon　nitride,　i.e.,　poly(triazine)　imides　(PTI),　with　non-metallic　boron　(B)　to　obtain　two　B/PTI　catalysts:　Bi/PTI　with　B　being　deposited　into　the　six-fold　cavity　of　the　PTI,　and　Bs/PTI　with　B　substituting　for　C　in　PTI.　For　CO2RR,　Bi/PTI　follows　a　quasi　Mars-van　Krevelen　process,　but　the　high　exposure　of　Bi　results　in　an　overly　strong　interaction　with　intermediates,　inhibiting　the　reactivity.　In　contrast,　Bs/PTI　enhances　the　binding　with　intermediates　by　introducing　Lewis　acid-base　pairs　(B-N),　which　reduce　the　ring　conjugation　effect　and　induce　the　enrichment　of　electrons　at　the　pyridine　N.　Hence,　CO2　reduction　with　the　adsorbed　H*　(Ha)　hydrogenation　mechanism　in　Bs/PTI　has　a　significant　reactivity.　©　2024　Elsevier　B.V.

Keyword：

Bismuth compounds Carbon dioxide Carbon nitride Catalysts Hydrogen Photocatalytic activity

Community：

[ 1 ] [Kong, Yuehua]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Pan, Junhui]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 3 ] [Li, Yi]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Li, Yi]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Fujian, Xiamen; 361005, China
[ 5 ] [Zhang, Yongfan]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 6 ] [Zhang, Yongfan]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Fujian, Xiamen; 361005, China
[ 7 ] [Lin, Wei]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 8 ] [Lin, Wei]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Fujian, Xiamen; 361005, China