In this work, SnO₂ loaded with a minor amount of corn cob activated carbon (CCAC) was synthesized through a simple chemical precipitation method. The product materials were characterized by XRD, XPS, UV-DRS, PL, FTIR, FE-SEM with EDAX, TEM, BET, EIS analysis and its photocatalytic activity for methylene blue (MB) degradation under sunlight irradiation was investigated. XRD pattern showed that the average crystalline size is reducing (17.25 nm) upon loading CCAC compared to the SnO₂. The band gap is reduced (3.52 eV) upon loading on CCAC than the SnO₂. Furthermore, lower PL emission intensity of the SnO₂/CCAC enhanced separation of the photogenerated charge carriers. It increased surface area and pore volume is due to the adding CCAC is 293.12 m²/g and 0.34 cm³/g are confirmed by BET analysis. Therefore, SnO₂/CCAC composite of the maximum removal efficiency (90.86 %) of MB dye shows that the improve SnO₂ (photocatalysis) and CCAC (adsorption) under sunlight irradiation within 120 min. Further, it also possible mechanism and pseudo-first-order model is used to analyze the kinetics studies.

在这项工作中，通过简单的化学沉淀法合成了负载少量玉米芯活性炭（CCAC）的SnO ₂。用XRD，XPS，UV-DRS，PL，FTIR，EDAX-FE-SEM，EDAX，TEM，BET，EIS分析对产物进行表征，研究了其在阳光照射下对亚甲基蓝（MB）降解的光催化活性。XRD图谱表明，与SnO ₂相比，加入CCAC时，平均晶体尺寸正在减小（17.25 nm）。带载CCAC上的带隙比SnO ₂减小了（3.52 eV）。此外，SnO _2的PL发射强度较低/ CCAC增强了光生载流子的分离。其表面积和孔体积的增加是由于通过BET分析证实的CCAC为293.12m ² / g和0.34cm ³ / g。因此，MB染料最大去除效率（90.86％）的SnO ₂ / CCAC复合材料显示出在120min的日光照射下SnO ₂（光催化）和CCAC（吸附）的改善。此外，还可能使用机理和伪一阶模型来分析动力学研究。