Fajriani Yulia, Heryanto Heryanto, Tahir Dahlang
Department of Physics, Hasanuddin University, Makassar 90245, Indonesia.
ACS Omega. 2023 Jul 18;8(30):27663-27673. doi: 10.1021/acsomega.3c03526. eCollection 2023 Aug 1.
Activated carbon/GeO composites were synthesized using the sol-gel method and then used as catalysts for the photodegradation of organic pollutants methylene blue (MB) and congo red (CR). The composites were characterized using an X-ray diffractometer and Fourier transform infrared spectroscopy to analyze the structure and chemical bonds of the composite materials, respectively. The ultraviolet-visible (UV-vis) absorption wavelength ranges of the composites toward the pollutants were 550-700 nm for MB and 450-550 for CR. The band gap energies of the composites were calculated, with the values found to be <4.5 eV. It was shown that the adsorption ability of the composites increased with the irradiation time of the pollutants. Furthermore, the adsorption kinetics data were found to be a good fit to a pseudo-first-order kinetics model.
采用溶胶-凝胶法合成了活性炭/GeO复合材料，并将其用作光降解有机污染物亚甲基蓝（MB）和刚果红（CR）的催化剂。分别使用X射线衍射仪和傅里叶变换红外光谱对复合材料进行表征，以分析复合材料的结构和化学键。复合材料对污染物的紫外-可见（UV-vis）吸收波长范围，对于MB为550-700nm，对于CR为450-550nm。计算了复合材料的带隙能量，发现其值<4.5eV。结果表明，复合材料对污染物的吸附能力随污染物辐照时间的增加而增强。此外，发现吸附动力学数据与伪一级动力学模型拟合良好。
