Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) PhotoreductionOACSTPCDEI
The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) photoreduction.The synchronized modulation of the above key issues is demanding and chal-lenging.Herein,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse migration.Moreover,the surface polarization of PML-Cu further promotes the electron converge in Cu atoms.The introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO desorption.The conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than PML-Cu.This work offers valuable insights into multi-step polarization regulation and active site design for catalysts.
Yi Zhang;Fangyu Guo;Jun Di;Keke Wang;Molly Meng‑Jung Li;Jiayu Dai;Yuanbin She;Jiexiang Xia;Huaming Li;
School of Chemistry and Chemical Engineering,Institute for Energy Research,School of the Environment and Safety Engineering,Jiangsu University,Zhenjiang 212013,People’s Republic of China Department of Applied Physics,The Hong Kong Polytechnic University,Hung Hom,Hong Kong,People’s Republic of ChinaCollege of Science,and Hunan Key Laboratory of Extreme Matter and Applications,National University of Defense Technology,Changsha 410073,People’s Republic of ChinaSchool of Chemistry and Chemical Engineering,National Special Superfine Powder Engineering Research Center,Nanjing University of Science and Technology,Nanjing 210094,People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials,Zhejiang Normal University,Jinhua 321004,People’s Republic of ChinaState Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,People’s Republic of ChinaDepartment of Applied Physics,The Hong Kong Polytechnic University,Hung Hom,Hong Kong,People’s Republic of ChinaSchool of Chemistry and Chemical Engineering,Institute for Energy Research,School of the Environment and Safety Engineering,Jiangsu University,Zhenjiang 212013,People’s Republic of China
化学
Bi_(12)O_(17)Br_(2)PorphyrinCO_(2)photoreductionPolarizationActive sites
《Nano-Micro Letters》 2024 (005)
P.169-183 / 15
This work was supported by the National Natural Science Foundation of China(Nos.22138011,22205108,22378206);Open Research Fund of Key Laboratory of the Ministry of Education for Advanced Catalysis Materials and Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces(KLMEACM 202201),Zhejiang Normal University.
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