Facile Modification of Titania with Nickel Sulfide and Sulfate Species for the Photoreformation of Cellulose into Hydrogen
文献类型：期刊论文
| 作者 | Hao, Hongchang1; Zhang, Ling; Wang, Wenzhong; Zeng, Shuwen1 |
| 刊名 | CHEMSUSCHEM
 |
| 出版日期 | 2018 |
| 卷号 | 11期号:16页码:2810 |
| 关键词 | biomass hydrogen nickel photochemistry sulfur |
| ISSN号 | 1864-5631 |
| DOI | 10.1002/cssc.201800743 |
| 英文摘要 | Photocatalytic cellulose reformation is regarded as a potential and affordable route for sustainable H-2 evolution. However, direct photoreformation still suffers from challenges such as the limited solubility of cellulose and the dependence on the catalytic activity of noble metals. Herein, we report a new photoreformation of cellulose into H-2 over TiO2 that is modified with nickel sulfide (NixSy) and chemisorbed sulfate species (SO42-) by a one-pot approach. A significant elevation in the photocatalytic hydrogen evolution rate is achieved with a maximal value of 3.02mmolg(-1)h(-1) during the first 3h, which is almost 76-fold higher than that of P25 and comparable to that of Pt-P25. Aided by systematic investigation, it is proposed that nickel sulfide and sulfate modification contribute synergistically to the remarkably increased efficiency of biomass transformation. Specifically, NixSy acts as a cocatalyst for photocatalytic H-2 production, and we infer that SO42- ions promote cellulose hydrolysis and the consequent accessibility of the biomass to catalysts. Further, the accumulated formate intermediates have a poisoning effect on the catalysts, the desorption of which can be controlled by tuning the aqueous alkalinity. Overall, our strategy for the modification of TiO2 with SO42- and NixSy provides a new perspective for the concurrent acceleration of cellulose hydrolysis and increase of the number of hydrogen evolution sites for the efficient photocatalytic reformation of cellulose into H-2. |
| 学科主题 | Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology |
| WOS记录号 | WOS:000442491300020 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | We acknowledge financial support from the National Natural Science Foundation of China (51772312, 51472260). ; We acknowledge financial support from the National Natural Science Foundation of China (51772312, 51472260). |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24720]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Hongchang,Zhang, Ling,Wang, Wenzhong,et al. Facile Modification of Titania with Nickel Sulfide and Sulfate Species for the Photoreformation of Cellulose into Hydrogen[J]. CHEMSUSCHEM,2018,11(16):2810, 2817. |
| APA | Hao, Hongchang,Zhang, Ling,Wang, Wenzhong,&Zeng, Shuwen.(2018).Facile Modification of Titania with Nickel Sulfide and Sulfate Species for the Photoreformation of Cellulose into Hydrogen.CHEMSUSCHEM,11(16),2810. |
| MLA | Hao, Hongchang,et al."Facile Modification of Titania with Nickel Sulfide and Sulfate Species for the Photoreformation of Cellulose into Hydrogen".CHEMSUSCHEM 11.16(2018):2810. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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