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Efficient removal of methylene blue from aqueous solutions using mixed oxides of cobalt oxide and tungsten trioxide modified graphene oxide
Journal of Saudi Chemical Society ( IF 5.6 ) Pub Date : 2023-12-27 , DOI: 10.1016/j.jscs.2023.101802
Khadijah H. Alharbi

A triple composition of cobalt oxide (Co3O4), tungsten trioxide (WO3), and graphene oxide (GO) is used to evaluate its effectiveness in degrading methylene blue. SEM reveals the cracked and porous structure of the ternary composition. TEM indicates an average grain size of 25 nm for WO3 and 35 nm for Co3O4. XRD analysis confirms the crystalline structure of Co3O4/WO3/GO. Thermal stability is tested across a temperature range from ambient to 1000 °C. The roughness average for Co3O4/WO3/GO is 3.2 nm. The composite, Co3O4/WO3/GO, exhibits antibacterial activity. The degradation efficiencies for methylene blue are as follows: Co3O4 (31.71%), WO3 (51.22%), Co3O4/GO (63.41%), WO3/GO (70.73%), Co3O4/WO3 (80.49%), and Co3O4/WO3/GO (95.12%) after 120 minutes of exposure to visible light. Therefore, binary and ternary nanocomposites are recommended for further investigations related to wastewater treatment.



中文翻译:

使用氧化钴和三氧化钨改性氧化石墨烯的混合氧化物从水溶液中有效去除亚甲基蓝

使用氧化钴 (Co 3 O 4 )、三氧化钨 (WO 3 ) 和氧化石墨烯 (GO)的三重组合物来评估其降解亚甲基蓝的有效性。SEM 揭示了三元组合物的裂纹和多孔结构。TEM表明WO 3的平均晶粒尺寸为25nm , Co 3 O 4的平均晶粒尺寸为3 ×5nmXRD分析证实了Co 3 O 4 /WO 3 /GO的晶体结构。热稳定性在环境温度至 1000 °C 的温度范围内进行测试。Co 3 O 4 /WO 3 /GO的平均粗糙度为3.2nm。该复合材料Co 3 O 4 /WO 3 /GO具有抗菌活性。对亚甲基蓝的降解效率如下:Co 3 O 4 (31.71%)、WO 3 (51.22%)、Co 3 O 4 /GO (63.41%)、WO 3 /GO (70.73%)、Co 3 O 4暴露于可见光120分钟后, /WO 3 (80.49%)和Co 3 O 4 /WO 3 /GO (95.12%)。因此,建议将二元和三元纳米复合材料用于废水处理相关的进一步研究。

更新日期:2023-12-30
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