A phosphate semiconductor-induced built-in electric field boosts electron enrichment for electrocatalytic hydrogen evolution in alkaline conditions
文献类型：期刊论文
| 作者 | Li, Zichuang; Pei, Yu; Ma, Ruguang; Wang, Yuandong; Zhu, Yufang; Yang, Minghui; Wang, Jiacheng |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2021 |
| 卷号 | 9期号:22页码:13109-13114 |
| 关键词 | PHOTOCATALYTIC SELECTIVE OXIDATION MAIN-GROUP ELEMENT DEGRADATION MECHANISMS CHARGE SEPARATION CARBON PLATINUM OXYGEN OXIDE HETEROSTRUCTURES NANOPARTICLES |
| 英文摘要 | At the semiconductor and metal interface, a built-in electric field leading to electron enrichment can be applied in developing efficient nano-hybrid catalysts because the induced electron-rich and electron-poor counterparts can synergistically modulate the active sites and elementary reaction steps. To overcome the extra difficulty in alkaline water dissociation during the production of green hydrogen, it is expected that such a built-in electric field can be constructed to boost interfacial electron enrichment to increase the water dissociation and hydrogen evolution kinetics. Herein, an n-type BiPO4 semiconductor is integrated with metallic Ru clusters (Ru/BiPO4) to produce an intrinsically built-in electric field, which causes electron enrichment via unidirectional electron transfer from BiPO4 to Ru. The resultant Ru/BiPO4 nanocomposite demonstrates superior water splitting activity toward electrocatalytic hydrogen evolution to Ru/C without electron enrichment in alkaline solution, and even exhibits nine-fold mass activity of commercial Pt/C in a harsher medium (3 M KOH). DFT calculation demonstrates that the positively charged BiPO4 matrix significantly decreases the energy barrier of water dissociation, while the negatively charged Ru clusters with more active electronic states optimize the proton adsorption and combination kinetics. The Ru layer in close contact with the phosphate matrix accepts the greatest number of electrons and shows the optimal Delta G(H*). This work sheds new light on the advantage of the physical effect for designing advanced electrocatalysts for energy conversion and storage. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21926]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Wang, JC (corresponding author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China. 2.Zhu, YF (corresponding author), Huanggang Normal Univ, Coll Chem Engn, Hubei Key Lab Proc & Applicat Catalyt Mat, Huanggang City 438000, Hubei, Peoples R China. 3.Ma, RG 4.Zhu, YF 5.Wang, JC (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, Zichuang,Pei, Yu,Ma, Ruguang,et al. A phosphate semiconductor-induced built-in electric field boosts electron enrichment for electrocatalytic hydrogen evolution in alkaline conditions[J]. JOURNAL OF MATERIALS CHEMISTRY A,2021,9(22):13109-13114. |
| APA | Li, Zichuang.,Pei, Yu.,Ma, Ruguang.,Wang, Yuandong.,Zhu, Yufang.,...&Wang, Jiacheng.(2021).A phosphate semiconductor-induced built-in electric field boosts electron enrichment for electrocatalytic hydrogen evolution in alkaline conditions.JOURNAL OF MATERIALS CHEMISTRY A,9(22),13109-13114. |
| MLA | Li, Zichuang,et al."A phosphate semiconductor-induced built-in electric field boosts electron enrichment for electrocatalytic hydrogen evolution in alkaline conditions".JOURNAL OF MATERIALS CHEMISTRY A 9.22(2021):13109-13114. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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