Highly-efficient photocatalytic hydrogen peroxide production over polyoxometalates covalently immobilized onto titanium dioxide
文献类型：期刊论文
| 作者 | Wu, Xiaofei; Zhang, Xiufang; Zhao, Shen; Gong, Yan; Djellabi, Ridha; Lin, Song; Zhao, Xu |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2020-02-05 |
| 卷号 | 591页码:1-17 |
| ISSN号 | 0926-860X |
| 关键词 | Photocatalysis H2O2 production Titanium dioxide Polyoxometalates Covalently Immobilized |
| 英文摘要 | The polyoxometalate (POMs) cluster of [PW9O34](9-) (PW9) have been covalently immobilized onto anatase TiO2 surface to prepare the catalyst of TiO2-PW9. The photocatalytic hydrogen peroxide (H2O2) production has been carried out over TiO2-PW9 under full wavelength irradiation in the presence of 5 vol.% benzyl alcohol as electron donor. The catalytic results reveal that the amounts of H2O2 can reach 38.2, 6.6, 22.8 and 18.7 mu mol within 2 h for TiO2-PW9, Na-PW9, TiO2-PW9-PM (physically mixed) and bare TiO2, respectively. The p-benzoquinone (PBQ) and superoxide dismutase (SOD) quenching experiments, the electron spin resonance (ESR) signal and quantitative experiment of superoxide radicals (O-center dot(2)-) results reveal that the negative shifts of the conduction band (CB) level from TiO2 to TiO2-PW9 (from -0.18 V to -0.36 V vs. NHE) can enhance the single-electron reduction of O-2 to O-center dot(2)- and further promote the sequential two-step single-electron O-2 reduction reaction to H2O2. In addition, the recycle experiment results reveal that the heterogeneous TiO2-PW9 is catalytic stable. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45300]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Wu, Xiaofei,Zhang, Xiufang,Zhao, Shen,et al. Highly-efficient photocatalytic hydrogen peroxide production over polyoxometalates covalently immobilized onto titanium dioxide[J]. APPLIED CATALYSIS A-GENERAL,2020,591:1-17. |
| APA | Wu, Xiaofei.,Zhang, Xiufang.,Zhao, Shen.,Gong, Yan.,Djellabi, Ridha.,...&Zhao, Xu.(2020).Highly-efficient photocatalytic hydrogen peroxide production over polyoxometalates covalently immobilized onto titanium dioxide.APPLIED CATALYSIS A-GENERAL,591,1-17. |
| MLA | Wu, Xiaofei,et al."Highly-efficient photocatalytic hydrogen peroxide production over polyoxometalates covalently immobilized onto titanium dioxide".APPLIED CATALYSIS A-GENERAL 591(2020):1-17. |
入库方式： OAI收割
来源：生态环境研究中心
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