The objective of this work was the synthesis of a zinc oxide‑tin oxide (ZnO‑SnO₂; ZT) nanocomposite while controlling the growth structure with the calcination temperature and the photocatalytic degradation of a rhodamine B (RhB) dye solution. Zinc acetate, tin chloride, and sodium hydroxide were used as the precursor. In the study of the effect of the reaction temperature on the synthesis, the synthesis of the ZT nanocomposite had a temperature change in the range of 300–800 °C when the mole ratio of the precursors and other factors were held constant. The effect of the synthesis reaction temperature on the photocatalytic activity was examined. The synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), UV–vis diffuse reflectance spectroscopy (UV–DRS), and photoluminescence (PL) spectroscopy. Results showed that the synthesized ZT nanocomposites consisted of hexagonal ZnO and tetragonal SnO₂. The content of SnO₂ in the sample increased evidently with increasing reaction temperature. The experimental findings showed that increasing the reaction temperature resulted in favorable chemical and physical properties for the ZT nanocomposite photocatalytic reactions, such as high-purity phases, high crystallinity, and lower rates of electron–hole pair recombination. RhB was used as the representative pollutant for evaluating the photocatalytic activity under UV illumination. The ZT nanocomposite synthesized at 800 °C showed the highest photodegradation efficiency of 79.53% and a first-order kinetic rate constant of 0.0139 min⁻¹ in 120 min. The most influential factors affecting the photocatalytic activity were the phase proportions and the phase purity of the ZT nanocomposite, which were controlled via the calcination temperature.

这项工作的目的是合成氧化锌-氧化锡（ZnO-SnO ₂; ZT）纳米复合材料，同时通过煅烧温度和罗丹明B（RhB）染料溶液的光催化降解来控制生长结构。醋酸锌，氯化锡和氢氧化钠用作前体。在研究反应温度对合成的影响时，当前体的摩尔比和其他因素保持恒定时，ZT纳米复合材料的合成温度变化范围为300-800°C。研究了合成反应温度对光催化活性的影响。合成样品的特征在于X射线衍射（XRD），扫描电子显微镜（SEM），能量色散光谱（EDS），傅里叶变换红外光谱（FTIR），紫外-可见漫反射光谱（UV-DRS）和光致发光（PL）光谱。₂。随着反应温度的升高，样品中SnO ₂的含量明显增加。实验结果表明，提高反应温度可为ZT纳米复合光催化反应带来良好的化学和物理性质，例如高纯相，高结晶度和较低的电子-空穴对重组率。RhB用作代表性污染物，用于评估紫外线照射下的光催化活性。在800°C合成的ZT纳米复合材料显示最高的光降解效率为79.53％，一级动力学速率常数为0.0139 min ^-1在120分钟内 影响光催化活性的最大影响因素是ZT纳米复合材料的相比例和相纯度，这是通过煅烧温度控制的。