The undoped and terbium (Tb)-doped SnO₂ thin films are coated on the glass substrates using the nebulized spray pyrolysis (NSP) technique. The crystallite size is calculated using the Williamson-Hall method and is found to be decreased from 80 to 56 nm with the increase of Tb doping concentration. Atomic force microscope (AFM) images show the spheroidal shape of the grains. The elemental analysis of the samples was investigated by energy dispersive analysis of X-rays (EDX). An increase in absorbance and decrease in bandgap values provide more photon absorption which enhances the photocatalytic reaction. The PL studies reveal the creation of more defect levels by doping which provides more active sites for catalyzed reactions. The Tb doping with SnO₂ improved the rate constant about 0.015/min, and a maximum photocatalytic dye degradation efficiency of 85% against methylene blue dye was observed. Therefore, the fabricated films found potential applications for photocatalysis that enable them to chemical industries.

使用雾化喷雾热解（NSP）技术将未掺杂和掺（（Tb）的SnO ₂薄膜涂覆在玻璃基板上。使用Williamson-Hall方法计算微晶尺寸，发现随着Tb掺杂浓度的增加，微晶尺寸从80nm减小至56nm。原子力显微镜（AFM）图像显示了颗粒的球形形状。通过X射线（EDX）的能量色散分析研究了样品的元素分析。吸光度的增加和带隙值的减小提供了更多的光子吸收，从而增强了光催化反应。PL研究表明，通过掺杂产生了更多的缺陷水平，这为催化反应提供了更多的活性位点。用SnO ₂掺杂Tb改进了速率常数约0.015 / min，观察到最大的光催化染料降解率对亚甲基蓝染料为85％。因此，所制造的薄膜发现了光催化的潜在应用，使其能够应用于化学工业。