Sheetlike gold nanostructures/graphene oxide composites via a one-pot green fabrication protocol and their interesting two-stage catalytic behaviors
文献类型：期刊论文
| 作者 | Geng, Guangwei1,2; Chen, Penglei1,2,3; Guan, Bo2; Liu, Yu1,2; Yang, Changchun1; Wang, Nannan2; Liu, Minghua2,3 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2017 |
| 卷号 | 7期号:82页码:51838-51846 |
| 英文摘要 | Au nanoarchitectures shaped with a sheetlike morphology have drawn great attention owing to their potential applications in diverse areas of paramount importance. While great achievements have been made in the fabrication of Au nanoplates, most of the currently existing synthesis protocols generally suffer from either the requirement of rigorous reaction conditions, the involvement of specific apparatus, the use of harmful chemicals, etc. The initiation of an easy, environmentally benign yet low cost method to avoid these issues is strongly desired. In this contribution, we find that Au nanoplates could be fabricated under ambient conditions simply by mixing an aqueous solution of potassium tetrachloroaurate(III), an aqueous dispersion of graphene oxide (GO), and ethanol. Interestingly, we show that the as-manufactured Au nanoplate/GO composite displays fascinating two-stage catalytic performance towards NaBH4-induced reduction of 4-nitrophenol (4-NP), in which the catalytic reactivity of the latter stage exhibits a substantial enhancement by a factor of ca. 9 times compared to that of the former stage. Our investigation suggests that such fascinating catalytic behaviors could be ascribed to the NaBH4-induced restoration of the pi-conjugated aromatic network of GO during the first stage, which promotes electron transfer from GO to Au nanoplates and facilitates the anchoring of 4-NPs onto the composites, resulting in the dramatically boosted catalytic performance of the second stage. This work might not only introduce a facile, green yet low-cost protocol for the synthesis of Au nanoplates but also provide deep insights into the catalytic performances of GO-based hybrid catalysts in terms of an interesting two-stage catalytic behavior. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39128]  |
| 专题 | 化学研究所_胶体、界面与化学热力学实验室 |
| 作者单位 | 1.Zhengzhou Univ, Coll Chem & Mol Engn, 100 Sci Rd, Zhengzhou 450001, Henan, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng, Guangwei,Chen, Penglei,Guan, Bo,et al. Sheetlike gold nanostructures/graphene oxide composites via a one-pot green fabrication protocol and their interesting two-stage catalytic behaviors[J]. RSC ADVANCES,2017,7(82):51838-51846. |
| APA | Geng, Guangwei.,Chen, Penglei.,Guan, Bo.,Liu, Yu.,Yang, Changchun.,...&Liu, Minghua.(2017).Sheetlike gold nanostructures/graphene oxide composites via a one-pot green fabrication protocol and their interesting two-stage catalytic behaviors.RSC ADVANCES,7(82),51838-51846. |
| MLA | Geng, Guangwei,et al."Sheetlike gold nanostructures/graphene oxide composites via a one-pot green fabrication protocol and their interesting two-stage catalytic behaviors".RSC ADVANCES 7.82(2017):51838-51846. |
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来源：化学研究所
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