Highly stable 3D multilayered nanoparticles-based β-Bi2O3 hierarchitecture with enhanced photocatalytic activity
作者： Abdul Hannan Zahid , Qiaofeng Han , Xuemei Jia , Shuzhen Li , Hu Hangjia
DOI: 10.1016/J.OPTMAT.2020.110389
关键词: Nuclear chemistry 、 Bismuth 、 BET theory 、 Nanoparticle 、 Nanosheet 、 Photocatalysis 、 Formate 、 Photodegradation 、 Materials science 、 Visible spectrum 、 Electrical and Electronic Engineering 、 General Computer Science 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials
摘要: Abstract β-Bi2O3 is defined as the most photoactive among various Bi2O3 polymorphs. However, it revealed poor stability under photocatalytic environment. Herein, by adding bismuth oxide formate (HCOOBiO, BiOR) to citrate with premium molar ratio of 1:3 followed air calcining at 350 ᵒC, nanosheet-based quasi-spherical (Bi2O3-sp) converted into nanoparticle-based multilayered sheet-like 3D hierarchitecture (Bi2O3-ml), which exhibited greatly enhanced activity visible light irradiation from 58.2% 98% for malachite green (MG) and 67.8% 92.9% tetracycline (TC) degradation. The photodegradation efficiency Bi2O3-ml could be ascribed improved absorption higher BET surface area. Furthermore, environment high durability photochemical stability, was discussed in detail first time. PL spectra recycled slight increase quantum system after four runs. A possible reaction mechanism also proposed.
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