Facile microwave assisted synthesis of N-rich carbon quantum dots/dual-phase TiO2 heterostructured nanocomposites with high activity in CO2 photoreduction
文献类型：期刊论文
| 作者 | Li, Mengli; Wang, Min1; Zhu, Longfeng; Li, Yiming; Yan, Zheng; Shen, Zhongquan; Cao, Xuebo |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2018 |
| 卷号 | 231页码:269 |
| 关键词 | Nanocomposite CO2 Photoreduction Carbon quantum dots TiO2 |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2018.03.027 |
| 英文摘要 | In this work, several efficient heterostructured nanocomposites with enhanced CO2 photoreduction activity were successfully constructed by anchoring carbon quantum dots onto TiO2 using a facile microwave assisted synthesis strategy. The carbon quantum dots obtained by microwave treatment of thiourea and citric acid acted as a sensitizer in the composites to enhance light absorption. The high-resolution transmission electron microscopy (HR-TEM) revealed that a closely integrated interface between carbon quantum dots and TiO2 nanosheets was formed in the heterostructured nanocomposites. Furthermore, the photogenerated charge transfer and separation in the heterogeneous nanocomposites were demonstrated to be significantly improved when compared with that in pristine TiO2. Consequently, a remarkable enhancement of photocatalytic activity evaluated for CO2 photoreduction under simulated solar light irradiation can be found in the nanocomposites. Maximum CH4 and CO yields of 0.769 and 1.153 mu mol, respectively, have been obtained from the photoreduction after one hour irradiation without any noble metal loaded on photocatalyst. The amounts of CH4 and CO generated over nanocoposite are 7.79 and 7.61 times as high as those on pristine TiO2. This encouraging performance in CO2 photoreduction shows that these nanocomposites might be a prospective material in environmental protection and energy conversion. |
| 学科主题 | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000430762300028 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | This work was financially supported by the National Natural Science Foundation of China (51702126, 21673102, 21603085), Zhejiang Provincial Natural Science Foundation of China (LQ158010002), and the Start-up Fund of Jiaxing University (70516036). ; This work was financially supported by the National Natural Science Foundation of China (51702126, 21673102, 21603085), Zhejiang Provincial Natural Science Foundation of China (LQ158010002), and the Start-up Fund of Jiaxing University (70516036). |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24681]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Jiaxing Univ, Sch Biol & Chem Engn, Jiaxing 314001, Zhejiang, Peoples R China 2.Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, 1295 Ding Xi Rd, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mengli,Wang, Min,Zhu, Longfeng,et al. Facile microwave assisted synthesis of N-rich carbon quantum dots/dual-phase TiO2 heterostructured nanocomposites with high activity in CO2 photoreduction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,231:269, 276. |
| APA | Li, Mengli.,Wang, Min.,Zhu, Longfeng.,Li, Yiming.,Yan, Zheng.,...&Cao, Xuebo.(2018).Facile microwave assisted synthesis of N-rich carbon quantum dots/dual-phase TiO2 heterostructured nanocomposites with high activity in CO2 photoreduction.APPLIED CATALYSIS B-ENVIRONMENTAL,231,269. |
| MLA | Li, Mengli,et al."Facile microwave assisted synthesis of N-rich carbon quantum dots/dual-phase TiO2 heterostructured nanocomposites with high activity in CO2 photoreduction".APPLIED CATALYSIS B-ENVIRONMENTAL 231(2018):269. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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