【摘 要】
：
Amidst the development of photoelectrochemical(PEC)CO2 conversion toward practical application,the production of high-value chemicals beyond C1 compounds under mild conditions is greatly desired yet challenging.Here,through rational PEC device design by c
【机 构】
：
Hefei National Laboratory for Physical Sciences at the Microscale,Collaborative Innovation Center of
论文部分内容阅读
Amidst the development of photoelectrochemical(PEC)CO2 conversion toward practical application,the production of high-value chemicals beyond C1 compounds under mild conditions is greatly desired yet challenging.Here,through rational PEC device design by combining Au-loaded and N-doped TiO2 plate nanoarray photoanode with Zn-doped Cu2O dark cathode,efficient conversion of CO2 to CH3COOH has been achieved with an outstanding Faradaic efficiency up to 58.1％(91.5％carbon selectivity)at 0.5 V vs.Ag/AgCl.Temperature programmed desorption and in situ Raman spectra reveal that the Zn-dopant in Cu2O plays multiple roles in selective catalytic CO2 conversion,including local electronic structure manipulation and active site modification,which together promote the formation of intermediate*CH2/*CH3 for C-C coupling.Apart from that,it is also unveiled that the sufficient electron density pro-vided by the Au-loaded and N-doped TiO2 plate nanoarray photoanode plays an equally important role by initiating multi-electron CO2 reduction.This work provides fresh insights into the PEC system design to reach the multi-electron reduction reaction and facilitate the C-C coupling reaction toward high-value multicarbon(C2+)chemical production via CO2 conversion.
其他文献
The Loess Plateau (LP) is an ecologically fragile region due to its sensitivities to climate variations and anthropogenic influences [1].The Chinese government recognized the ecological significance of the LP and implemented a series of ecological restora
The uplift of different parts of the Tibetan Plateau caused by the collision,subduction and thickening of the Indian-Eurasian conti-nent is considered to be the most significant landform change of Asia in the last 50 Ma.The plateau uplift led to elevation
The Tibetan Plateau(TP),as the world\'s highest plateau,has almost all the key elements of the entire Earth system,including interconnected lithosphere,atmosphere,cryosphere,biosphere and anthroposphere[1-3].This completeness makes the TP an ideal natur
Aerobic glycolysis,also known as the Warburg effect,is a hallmark of cancer and essential for metabolism in malignancies,but its regulation and modulation in cancer cells remain poorly understood.Here,using large-scale functional screening,we identified a
The security of quantum communication is based on the laws of quantum mechanics,which can resist attacks from any powerful classical and quantum computers.It has great potential in secure communication in the future.One well-known form of quantum communic
Metal halide perovskite solar cells(PSCs)have drawn enormous attention due to their great potential to share the market of silicon solar cells[1-3].During the past few years,significant progress has been made in fabrication method,chemical composition,def
The orchestrated expression of thousands of genes gives rise to the complexity of the human brain.However,the structures governing these myriad gene-gene interactions remain unclear.By analyzing transcription data from more than 2000 sites in six human br
Introducing ferromagnetism into non-magnetic systems without the participation of magnetic elements is promising for all-electric spintronic devices[1,2].Many approaches have been pursued,such as non-magnetic defects induced magnetization in layered mater
The pandemic of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a high number of deaths in the world.To combat it,it is necessary to develop a better understanding of how the virus infects host cells.Infection normally starts w
Thiazolidinediones(TZDs)are potent insulin sensitizers[1,2],effectively lower the glycosylated hemoglobin A1c HbA1c[1,3]and exert cardiovascular(CV)protective effects in diabetic[4]and nondiabetic[5]individuals with a prior CV event.Although less well app