材料科学
纳米孔
甘油
方向(向量空间)
制氢
纳米技术
氢
化学工程
工程物理
有机化学
工程类
几何学
化学
数学
作者
Zihao Wu,Kexin Ren,Jiayi Zhou,Shouxin Zhang,Limin Qi
标识
DOI:10.1002/adfm.202418294
摘要
Abstract Photoelectrocatalysis has the capability to utilize solar energy to produce hydrogen and valuable chemicals; however, their conversion efficiency remains to reach practical thresholds. Here, a rapid‐ramping annealing strategy is reported to synthesize nanoporous Mo‐doped bismuth vanadate (MBVO) photoanodes with (001)‐preferred orientation. This approach leverages the enhanced carrier transport along the crystallographic [001] direction, optimizing the bulk photoelectrical properties of the MBVO photoanodes. By substituting the surface oxygen evolution reaction with the glycerol oxidation reaction, the photoconversion efficiency is significantly boosted, reaching a photocurrent density of 7.45 mA cm −2 at 1.23 V versus RHE and an incident photon‐to‐current conversion efficiency of ≈100% for hydrogen generation, accompanied by the production of value‐added products in a high rate (≈1700 mmol m −2 h −1 in total) with a total Faradaic efficiency up to 96%. These results shed light on the construction of practical photoelectrocatalysis systems by demonstrating the potential of bulk‐phase engineering coupled with surface reaction design.
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