光催化
甲基橙
铋
氧化物
带隙
降级(电信)
分解
热分解
碳酸钾
材料科学
化学
碳酸盐
核化学
无机化学
矿物学
有机化学
催化作用
光电子学
电信
计算机科学
作者
S. Iyyapushpam,S.T. Nishanthi,D. Pathinettam Padiyan
标识
DOI:10.1016/j.jpcs.2015.02.005
摘要
Bismuth oxide carbonate was synthesized from bismuth nitrate and potassium carbonate and then converted to phase pure β-Bi2O3 form by means of thermal decomposition. X-ray diffraction, HR-SEM, diffuse reflectance UV–vis and photocatalytic degradation studies were carried out on both the samples. Bi2O2CO3 exhibited a wide band gap of 3.406(5) eV while β-Bi2O3 had a lesser band gap of 2.589(3) eV. β-Bi2O3 degrades a higher amount of methyl orange because of its lesser band gap and its optimum loading was 0.1 g in 50 ml of 10 ppm solution. After photocatalytic degradation Bi2O2CO3 remains in the stable form whereas β-Bi2O3 changes to Bi2O2CO3.
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