Synergistic contributions by decreasing overpotential and enhancing charge-transfer in alpha-Fe2O3/Mn3O4/graphene catalysts with heterostructures for photocatalytic water oxidation
文献类型：期刊论文
| 作者 | Yin, Shunli1; Wang, Xiaomei2; Mou, Zhigang1; Wu, Yijie1; Huang, Hui1; Zhu, Mingshan3; Du, Yukou1; Yang, Ping1 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:23页码:11289-11296 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c4cp00384e |
| 英文摘要 | A novel nanocomposite consisting of alpha-Fe2O3, Mn3O4 and reduced graphene oxide (r-GO) has been facilely synthesized through a two-step method: solvothermal reaction for Mn3O4-modified alpha-Fe2O3 (alpha-Fe2O3/Mn3O4) and self-assembly process for combining alpha-Fe2O3/Mn3O4 with r-GO (alpha-Fe2O3/Mn3O4/r-GO). The morphology and structure of the nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The results demonstrated that rod-like hematite was modified by Mn3O4 and dispersed on the surface of r-GO. Raman and Fourier transform infrared spectra (FTIR) showed superior interfacial contacts between alpha-Fe2O3/Mn3O4 and r-GO. Ultraviolet-visible diffuse reflectance spectroscopy (DRS) and photoelectrochemical characterization revealed a high light-harvesting efficiency, a lowered overpotential for water oxidation and an excellent charge transfer performance of alpha-Fe2O3/Mn3O4/r-GO nanocomposite with heterostructures. The photocatalytic oxygen evolution from the optimized photocatalyst was up to 1406.2 mu mol g(-1) in 10 h of UV-vis light irradiation and the quantum yield was ca. 4.35% at 365 nm. Our investigation suggests that constructing a catalyst with heterostructures is a promising method to enhance photocatalytic activity. |
| 语种 | 英语 |
| WOS记录号 | WOS:000336796800024 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50713]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, Ping |
| 作者单位 | 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China 2.Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Suzhou 215011, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Shunli,Wang, Xiaomei,Mou, Zhigang,et al. Synergistic contributions by decreasing overpotential and enhancing charge-transfer in alpha-Fe2O3/Mn3O4/graphene catalysts with heterostructures for photocatalytic water oxidation[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(23):11289-11296. |
| APA | Yin, Shunli.,Wang, Xiaomei.,Mou, Zhigang.,Wu, Yijie.,Huang, Hui.,...&Yang, Ping.(2014).Synergistic contributions by decreasing overpotential and enhancing charge-transfer in alpha-Fe2O3/Mn3O4/graphene catalysts with heterostructures for photocatalytic water oxidation.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(23),11289-11296. |
| MLA | Yin, Shunli,et al."Synergistic contributions by decreasing overpotential and enhancing charge-transfer in alpha-Fe2O3/Mn3O4/graphene catalysts with heterostructures for photocatalytic water oxidation".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.23(2014):11289-11296. |
入库方式： OAI收割
来源：化学研究所
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