Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
School of Advanced Materials and Engineering, Kumoh National Institute of Technology, 61 Daehak-Ro, 39177, Gumi, Korea.
J Nanosci Nanotechnol. 2020 Jan 1;20(1):143-154. doi: 10.1166/jnn.2020.17188.
Simple one-step solvothermal route was used to synthesize -Bi₂O₃ nanostructures. Well-defined nanoflowers and finite nanorods surface morphology of the samples were revealed. The physical characterization and material confirmation was explored by employing X-ray diffraction (XRD), Raman, photoluminescence (PL), and Fourier transform infrared (FTIR) studies. The optical bandgap of about 2.71 and 2.72 eV was observed for nanoflower and nanorods, respectively. The highest specific surface area of 0.877 m²/g with mesoporous feature was reported for nanoflower sample. The improved photocurrent of 12.47 A/cm² was observed for the nanoflower photoanode with lowest internal resistance and the highest stability over 3600 s, with 87% retention in photocurrent was estimated from chronoamperometry (CA) study. The effective methyl orange degradation of MO as 94% was investigated by nanoflower photocatalyst. The synthesis of metastable -Bi₂O₃ nanostructures with hierarchical morphology to adapt as an efficient photoanode for solar water splitting and pollutant degradation applications was reported.
采用简单的一步溶剂热法合成了β-Bi₂O₃纳米结构。揭示了样品具有良好定义的纳米花和有限纳米棒的表面形态。通过 X 射线衍射（XRD）、拉曼、光致发光（PL）和傅里叶变换红外（FTIR）研究探讨了物理特性和材料确认。分别观察到纳米花和纳米棒的光学带隙约为 2.71 和 2.72 eV。报道了纳米花样品具有最高的比表面积 0.877 m²/g 和介孔特征。纳米花光阳极的光电流最大为 12.47 A/cm²，内阻最低，在 3600 s 内稳定性最高，通过计时安培法（CA）研究估计光电流保持率为 87%。通过纳米花光催化剂研究了对甲基橙（MO）的有效降解，达到 94%。报道了具有分级形态的亚稳态β-Bi₂O₃纳米结构的合成，以适应作为太阳能水分解和污染物降解应用的高效光阳极。
