Binary heterostructures Ag₂ZrO₃/TiO₂ composites have been prepared by a facile calcination-hydrothermal, using ZrOCl₂·8H₂O, AgNO_3, and TBOT as raw materials and PVP as a dispersant. X-ray diffraction (XRD), transmission electron microscope (TEM), Raman spectrometer, XPS, UV-vis DRS, and photoluminescence (PL) were employed to characterize the Ag₂ZrO₃/TiO₂ composites. In an orthodox three-electrode system with RhB electrolyte solution, electrochemical measurements were carried out, and the results showed that it was a remarkable reversible reaction with reliable stabilization and favorable dynamics properties. The photocatalytic performances of Ag₂ZrO₃/TiO₂ composites were estimated via the dilapidation of RhB under visible-light irradiation. In comparison to the pure TiO_2, the photocatalytic presentation of Ag₂ZrO₃/TiO₂ was enhanced. The presence of Ag₂ZrO₃ formed well-matched band level and constructed a heterogeneous interface to remarkably modify the bandgap energy with prolonged charge separation. The binary Ag₂ZrO₃/TiO₂ composites can be regarded as a potential environmental material for applications in photocatalytic degradation of organic contaminants under visible-light irradiation.

Graphical abstract

以ZrOCl ₂ ·8H ₂ O，AgNO ₃和TBOT为原料，以PVP为分散剂，通过简单的煅烧-水热法制备了二元异质结构Ag ₂ ZrO ₃ / TiO ₂复合材料。利用X射线衍射（XRD），透射电子显微镜（TEM），拉曼光谱仪，XPS，紫外可见DRS和光致发光（PL）表征了Ag ₂ ZrO ₃ / TiO ₂复合材料。在带有RhB电解质溶液的正统三电极系统中，进行了电化学测量，结果表明该反应是显着的可逆反应，具有可靠的稳定性和良好的动力学性质。Ag ₂ ZrO ₃ / TiO ₂复合材料的光催化性能是通过在可见光照射下RhB的破灭来估计的。与纯TiO _2相比， Ag ₂ ZrO ₃ / TiO ₂的光催化性能增强。Ag ₂ ZrO ₃的存在形成了良好匹配的能级，并构建了一个异质界面来显着改变带隙能量并延长了电荷分离。二元Ag ₂ ZrO ₃ / TiO ₂复合材料可被视为潜在的环境材料，可用于可见光照射下光催化降解有机污染物。

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