Efficient Hydrogen Peroxide (H2O2) Synthesis by CaSnO3 via Two-Electron Water Oxidation Reaction
文献类型：期刊论文
| 作者 | Kang T4; Li B4; Hao QL4; Gao WJ4; Bin F(宾峰)3 ; Hui KN2; Fu D1; Dou BJ4
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| 刊名 | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
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| 出版日期 | 2020-10-05 |
| 卷号 | 8期号:39页码:15005-15012 |
| 关键词 | CaSnO3 nanoparticles in situ H2O2 generation two-electron water oxidation reaction DFT vacancy oxygen calcination |
| ISSN号 | 2168-0485 |
| DOI | 10.1021/acssuschemeng.0c05449 |
| 通讯作者 | Fu, Dong(fudongimu@yahoo.com) ; Dou, Baojuan(bjdou@tust.edu.cn) |
| 英文摘要 | Electrochemical in situ hydrogen peroxide (H2O2) generation from a two-electron water oxidation reaction (2e-WOR) is a challenge, not only on catalyst selection but also on electrode making. Herein, the H2O2 electrocatalyst CaSnO3 nanoparticles were prepared by low-cost glucose as an agent and characterized by X-ray diffraction (XRD), thermogravimetric and differential scanning calorimetry (TG-DSC), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The active sites for the OH- adsorption on the surface CaSnO3 (121) was identified by density functional theory (DFT) calculation, and the corresponding reaction mechanism of H2O2 formation was proposed. The CaSnO3 nanoparticles can be formed from 650 to 850 degrees C, and the particle sizes are in the range of 27.2-37.3 nm. The mechanism of catalyst formation is that species of Ca and Sn reacted with oxygen to generate CaO and SnO2 during low-temperature calcination and CaSnO3 generated during high-temperature calcination. The active sites are the coordination-unsaturated Sn ions, which easily adsorb the negative-charge OH- from the solution, forming an OH* intermediate, and two adsorbed OH* can combine to generate a neutral H2O2 molecule. The H2O2 generation rate over CaSnO3 was calcinated at 850 degrees C is 347.7 mu mol.min(-1).g(-1) at 2.6 V versus Ag/AgCl under dark conditions. The work opens an in situ H2O2 generation route, direct water oxidation, with wide application prospects. |
| 分类号 | 一类 |
| WOS关键词 | WASTEWATERS ; ELECTRODES ; OXYGEN |
| 资助项目 | National Nature Science Foundation of China[51776216] ; Tianjin Weiming Technology Co. Ltd. ; Tianjin University of Science and Technology[1900030001] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000579967200039 |
| 资助机构 | National Nature Science Foundation of China ; Tianjin Weiming Technology Co. Ltd. ; Tianjin University of Science and Technology |
| 其他责任者 | Fu, Dong ; Dou, Baojuan |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85351]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Tianjin Weiming Technol Co Ltd, Tianjin 300384, Peoples R China 2.Univ Macau, Inst Appl Phys & Mat Engn, Taipa 999078, Macau, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 4.Tianjin Univ Sci & Technol, Tianjin Key Lab Brine Chem Engn & Resource Ecouti, Coll Chem Engn & Mat Sci, Tianjin 300457, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Kang T,Li B,Hao QL,et al. Efficient Hydrogen Peroxide (H2O2) Synthesis by CaSnO3 via Two-Electron Water Oxidation Reaction[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2020,8(39):15005-15012. |
| APA | Kang T.,Li B.,Hao QL.,Gao WJ.,宾峰.,...&Dou BJ.(2020).Efficient Hydrogen Peroxide (H2O2) Synthesis by CaSnO3 via Two-Electron Water Oxidation Reaction.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,8(39),15005-15012. |
| MLA | Kang T,et al."Efficient Hydrogen Peroxide (H2O2) Synthesis by CaSnO3 via Two-Electron Water Oxidation Reaction".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 8.39(2020):15005-15012. |
入库方式： OAI收割
来源：力学研究所
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