用于废水处理和其他环境污染物应用的掺 Ag 的 MnO 纳米结构的效果。
Effect of Ag doped MnO nanostructures suitable for wastewater treatment and other environmental pollutant applications.
机构信息
Department of Physics, Periyar University, Salem, 636011, Tamil Nadu, India.
Department of Physics, Government Arts College (Autonomous), Salem, 636007, Tamil Nadu, India.
出版信息
Environ Res. 2022 Apr 1;205:112560. doi: 10.1016/j.envres.2021.112560. Epub 2021 Dec 13.
A modest sol-gel method has been employed to prepare the pure and Ag doped MnO nanoparticles and methodologically studied their physical, morphological, and photosensitive properties through XRD, TEM, EDAX, Raman, UV, PL and N adsorption - desorption study. Tetragonal crystalline arrangement with spherical nanoparticles was found out through XRD and TEM studies. The EDAX studies further supported that formation Ag in the MnO crystal matrix. The bandgap energy of Ag doped MnO was absorbed through UV spectra. Photo -generated recombination process and surface related defects were further recognized by PL spectra. Through visible light irradiation, the photo - degradation of methyl orange (MO) and phenol dye solutions were observed. The optimum condition of (10 wt% of Ag) Ag doped MnO catalyst showed tremendous photocatalytic efficiency towards MO than phenol under same experimental study.
采用温和的溶胶-凝胶法制备了纯 MnO 和 Ag 掺杂的 MnO 纳米粒子，并通过 XRD、TEM、EDAX、Raman、UV、PL 和 N 吸附-脱附研究对其物理、形态和光敏性能进行了方法学研究。通过 XRD 和 TEM 研究发现四方晶系排列的球形纳米粒子。EDAX 研究进一步证实了 Ag 在 MnO 晶体基质中的形成。Ag 掺杂 MnO 的能带隙能量通过紫外光谱吸收。光致复合过程和表面相关缺陷通过 PL 光谱进一步得到确认。通过可见光照射，观察到甲基橙 (MO) 和苯酚染料溶液的光降解。在相同的实验研究中，（10wt%的 Ag）Ag 掺杂 MnO 催化剂对 MO 的光催化效率明显高于苯酚。
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