| Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism | |
| Wang, Yuxian1,2; Xie, Yongbing1; Sun, Hongqi2; Xiao, Jiadong1,3; Cao, Hongbin1; Wang, Shaobin2 | |
| 2016-04-20 | |
| 发表期刊 | ACS APPLIED MATERIALS & INTERFACES
 |
| ISSN | 1944-8244 |
| 卷号 | 8期号:15页码:9710-9720 |
| 摘要 | Nanocarbons have been demonstrated as promising environmentally benign catalysts for advanced oxidation processes (AOPs) upgrading metal-based materials. In this study, reduced graphene oxide (rGO) with a low level of structural defects was synthesized via a scalable method for catalytic ozonation of p-hydroxylbenzoic acid (PHBA). Metal free rGO materials were found to exhibit a superior activity in activating ozone for catalytic oxidation of organic phenolics. The electron-rich carbonyl groups were identified as the active sites for the catalytic reaction. Electron spin resonance (ESR) and radical competition tests revealed that superoxide radical (O-center dot(2)-) and singlet oxygen (O-1(2)) were the reactive oxygen species (ROS) for PHBA degradation. The intermediates and the degradation pathways were illustrated from mass spectroscopy. It was interesting to observe that addition of NaCI could enhance both ozonation and catalytic ozonation efficiencies and make O-center dot(2)- as the dominant ROS. Stability of the catalysts was also evaluated by the successive tests. Loss of specific surface area and changes in the surface chemistry were suggested to be responsible for catalyst deactivation. |
| 关键词 | Catalytic Ozonation Reduced Graphene Oxide Surface Carbonyl Groups P-hydroxylbenzoic Acid Superoxide Radical |
| 文章类型 | Article |
| WOS标题词 | Science & Technology ; Technology |
| DOI | 10.1021/acsami.6b01175 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | WALLED CARBON NANOTUBES ; SINGLET OXYGEN ; HYDROGEN-PEROXIDE ; OXALIC-ACID ; HETEROGENEOUS CATALYSIS ; ENHANCED OZONATION ; WATER-TREATMENT ; ARMCHAIR EDGES ; WASTE-WATER ; OXIDATION |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 项目资助者 | National Natural Science Foundation of China(21207133) ; National Science Fund for Distinguished Young Scholars of China(51425405) |
| WOS记录号 | WOS:000374812000020 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ipe.ac.cn/handle/122111/21024 |
| 专题 | 湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn, Beijing 100190, Peoples R China 2.Curtin Univ, Dept Chem Engn, GPO Box U1987, Perth, WA 6845, Australia 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,et al. Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(15):9710-9720. |
| APA | Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,Xiao, Jiadong,Cao, Hongbin,&Wang, Shaobin.(2016).Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism.ACS APPLIED MATERIALS & INTERFACES,8(15),9710-9720. |
| MLA | Wang, Yuxian,et al."Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism".ACS APPLIED MATERIALS & INTERFACES 8.15(2016):9710-9720. |
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| Efficient Catalytic （5116KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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