Facet-mediated interaction between humic acid and TiO2 nanoparticles: implications for aggregation and stability kinetics in aquatic environments
文献类型：期刊论文
| 作者 | Zhang, Hui; Wang, Weimin; Zhao, Huanxin; Zhao, Lixia; Gan, Li-Yong; Guo, Liang-Hong |
| 刊名 | ENVIRONMENTAL SCIENCE-NANO
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 6期号:6页码:1754-1764 |
| ISSN号 | 2051-8153 |
| 英文摘要 | Interfacial interactions between TiO2 nanocrystals and the surrounding environmental media play a critical role in dictating their environmental behaviors. Here two specific-faceted TiO2 crystals, {101} facet and {001} facet, were adopted to investigate facet-mediated aggregation kinetics in aquatic environments. In pristine electrolyte solution (NaCl and CaCl2), {001} TiO2 exhibited higher stability than {101} TiO2 due to the abundant -OH groups on the {001} facet surface. The presence of Suwannee river humic acid (SRHA) significantly improved the stability of TiO2 nanocrystals in a facet dependent manner, in which {101} TiO2 exhibited a more remarkable improvement in stability than {001} TiO2. At a high SRHA concentration (10 mg L-1), both faceted TiO2 displayed comparable stability. The adsorption experiments and attenuated total reflectance Fourier transformation infrared spectroscopy demonstrated that {101} TiO2 induced more pronounced adsorption of SRHA molecules than {001} TiO2, probably driven by the efficient bidentate coordination of -COO- groups in SRHA on the {101} facet. This facet-affected colloidal stability behavior would deepen our understanding on nanomaterial transport and exposure in natural waters. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42948]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.Shenyang Univ Chem Technol, Inst Environm & Safety Engn, Shenyang 110142, Liaoning, Peoples R China 3.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hui,Wang, Weimin,Zhao, Huanxin,et al. Facet-mediated interaction between humic acid and TiO2 nanoparticles: implications for aggregation and stability kinetics in aquatic environments[J]. ENVIRONMENTAL SCIENCE-NANO,2019,6(6):1754-1764. |
| APA | Zhang, Hui,Wang, Weimin,Zhao, Huanxin,Zhao, Lixia,Gan, Li-Yong,&Guo, Liang-Hong.(2019).Facet-mediated interaction between humic acid and TiO2 nanoparticles: implications for aggregation and stability kinetics in aquatic environments.ENVIRONMENTAL SCIENCE-NANO,6(6),1754-1764. |
| MLA | Zhang, Hui,et al."Facet-mediated interaction between humic acid and TiO2 nanoparticles: implications for aggregation and stability kinetics in aquatic environments".ENVIRONMENTAL SCIENCE-NANO 6.6(2019):1754-1764. |
入库方式： OAI收割
来源：生态环境研究中心
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