| Title: | NiCo(2)O(4) spinel for efficient toluene oxidation: The effect of crystal plane and solvent |
| Author(s): | Niu J; Liu H; Zhang Y; Wang X; Han J; Yue Z; Duan E; |
| Address: | "Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China. Electronic address: njrhepjs@163.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China; Hebei Synergy Environmental Technology Co., Ltd., Shijiazhuang, Hebei, 050099, People's Republic of China. Electronic address: 13333650653@163.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China. Electronic address: 15227875850@163.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China. Electronic address: 57461728@qq.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China. Electronic address: hgxhjj@163.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China. Electronic address: 906797502@qq.com. Pollution Prevention Biotechnology Laboratory of Hebei Province and School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, People's Republic of China; National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang, Hebei, 050018, PR China. Electronic address: duan_eh@163.com" |
| DOI: | 10.1016/j.chemosphere.2020.127427 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Spinel oxides, e.g., NiCo(2)O(4), is a promising catalyst for the catalytic oxidation of toluene. Understanding and designing versatile NiCo(2)O(4) spinel is important for low-temperature toluene oxidation. Here, we investigated the surface-characteristic-dependent degradation activity of NiCo(2)O(4) crystals through experiment and characterization. NiCo(2)O(4) nanosheet using ethanol as solvent (named E--NiCo(2)O(4)) exposing 110 crystal planes exhibited the lowest temperature toluene oxidation. The T(99) of toluene conversion was 256 degrees C, which is much lower than that of NiCo(2)O(4) nanosheet using ethylene glycol as solvent (named EG--NiCo(2)O(4)), NiCo(2)O(4) octahedron (named O--NiCo(2)O(4)) and NiCo(2)O(4) truncated octahedron (named TO--NiCo(2)O(4)). Characterization using various techniques such as XRD, TEM, BET, XPS, H(2)-TPR and CO(2)-TPD showed that Co(3+) and surface adsorbed oxygen (O(sur)) enriched surface, excellent redox properties and effective diffusion of the reaction product reasonably explain the enhancement in catalytic activity over the E--NiCo(2)O(4). The research reveals that the effect of specific crystal planes and solvent was the key factor to govern the activity of low-temperature toluene oxidation" |
| Keywords: | Adsorption Aluminum Oxide/*chemistry Catalysis Cold Temperature Magnesium Oxide/*chemistry Oxidation-Reduction Oxides/chemistry Oxygen/chemistry Solvents Toluene/*chemistry Crystal facet NiCo(2)O(4) Oxidation toluene Solvent effect Surface characteristic; |
| Notes: | "MedlineNiu, Jianrui Liu, Haobin Zhang, Yiyuan Wang, Xin Han, Jing Yue, Zihan Duan, Erhong eng England 2020/07/01 Chemosphere. 2020 Nov; 259:127427. doi: 10.1016/j.chemosphere.2020.127427. Epub 2020 Jun 20" |
