Enhanced Photoelectrochemical Water Splitting of Hydrothermally-Grown ZnO and Yttrium-doped ZnO NR Arrays

International Conference on Materials Engineering and Science

Qasim, Amin K.^1 ; Jamil, Lazgin A.^1 ; Chen, Qiao^2

Faculty of Science, Department of Chemistry, University of Zakho, Duhok, Kurdistan Region, Iraq^1

School of Life Sciences, Department of Chemistry, University of Sussex, Brighton

BN1 9QJ, United Kingdom^2

关键词: Hydrothermal methods;    Photocurrent density;    Photoelectrochemical water splitting;    Photoelectrochemicals;    Sol-gel deposition;    Water splitting;    Yttrium doped zno;    Yttrium-doped;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/454/1/012033/pdf
DOI  :  10.1088/1757-899X/454/1/012033

来源: IOP

【 摘 要 】

Undoped and Y doped ZnO nanorods (YZO NRs) were prepared by hydrothermal method. The as-prepared ZnO and YZO NRs with different Y/Zn molar ratios were used as anodes for electrochemical water splitting. Then, photoelectrochemical (PEC) water splitting performances of YZO NRs were tested. When compared with pristine ZnO NRs, the photocurrent density generated with yttrium doped zinc oxide NR as electrode was higher(1.2 mA cm-2) than that obtained with pristine ZnO NRs (0.25 mA cm-2), at 0.2 V vs. Ag/AgCl using samples of 1.2 mol % of yttrium. This performance corresponds to calculated photo-conversion efficiency of 0.40%, at a low potential (-0.38V vs Ag/AgCl) of the non-doped ZnO NR film.