Tunable bismuth doping/loading endows NaTaO_(3)nanosheet highly selective photothermal reduction of CO_(2)  

作　　者：Mengmeng Zhang Changhua Wang Yueyun Wang Songmei Li Xintong Zhang Yichun Liu 

机构地区：[1]Key Laboratory of Ultraviolet(UV)-Emitting Materials and Technology of Chinese Ministry of Education,Northeast Normal University,Changchun 130024,China

出　　处：《Nano Research》2023年第2期2142-2151,共10页纳米研究（英文版）

基　　金：supported by the Natural Science Foundation of China(Nos.91833303,52273236,and 51872044);the 111 Project(No.B13013);Jilin Province Science and Technology Development Project(No.20220201073GX).

摘　　要：Photothermal CO_(2)reduction with H2O,integrating advantages of photocatalysis driven H2O splitting and thermal catalysis promoted CO_(2)reduction,has drawn sharply increasing attention in artificial synthesis of solar fuels.The photothermal effect of metal nanoparticles facilities CO_(2)hydrogenation and activation of lattice oxygen in oxide photocatalyst promotes H2O oxidation,which is essentially considered for highly efficient photothermal catalysis.However,the large thermal conductivity of most metal nanoparticles induces inevitable heat dissipation,restricting the increase of catalyst temperature.In this work,to minimize the heat dissipation,we employ bismuth nanoparticles as photothermal unit,which is of the lowest thermal conductivity in the metal family.Meanwhile,we adopt bismuth doped NaTaO_(3)as photocatalytic unit because of the bismuth doping induced activation of lattice oxygen.The bismuth nanoparticles are assembled with bismuth doped NaTaO_(3)through one-step tunable transformation from Bi4TaO8Cl.Benefiting from the photothermal effect,thermal insulation caused by bismuth metal,and lattice oxygen activation by bismuth doping,the NaTaO_(3):Bi hybrid exhibits high photothermal catalytic performance.The yield of CO over NaTaO_(3):Bi hybrid at 413 K via photothermal catalysis is 141 times higher than that room temperature photocatalysis.Further,ultraviolet(UV)light irradiation leads to 89.2%selectivity of CO and visible light irradiation leads to 97.5%selectivity of CH4.This work may broaden the photocatalytic application of ABO_(3)perovskite and provides a novel strategy for the development of photothermal catalysts for artificial photosynthesis.

关 键 词：CO_(2)reduction photothermal catalytic NaTaO_(3) BISMUTH high selectivity 

分 类 号：O64[理学—物理化学]