Background

Due to the potential ecosystem protection and management applications, searching to achieve highly optimized semiconductor-based photocatalysts utilizing solar energy is still a significant challenge.

Methods

Thus, CaTiO₃/g-C₃N₄ heterostructures synthesis via in-situ calcination method was synthesized here, and its structure was investigated by different characterization techniques such as FT-IR, XRD, SEM, EDX, X-ray mapping, cyclic voltammetry (CV), EIS, and DRS techniques.

Significant findings

The average crystallite size of the composite sample was estimated at 3.8 nm and 3.5 nm, respectively, according to the Scherrer and Williamson-Hall using XRD results. pHpzc values were approximately 8.6, 5.5, and 6.5 for CaTiO₃, g-C₃N_4, and CaTiO₃/g-C₃N₄ samples. Based on the DRS data, the evaluated band gap energy for the g-C₃N₄, CaTiO_3, and CaTiO₃/g-C₃N₄ were 2.76, 3.5, and 2.6 eV, respectively. EIS and CV data confirmed better charge carriers' transfer in the composite. The proposed CaTiO₃/g-C₃N₄ composite showed a synergistic effect in the photodegradation of Gemifloxacin in an aqueous solution under both UV and Vis light illumination. Changes in the CaTiO₃:g-C₃N₄ ratio varied the photocatalytic activity of the obtained catalyst.

中文翻译：

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CaTiO3 钙钛矿/g-C3N4 异质结基复合光催化剂，第二部分：合成、表征以及对吉米沙星的增强光催化活性

背景

由于潜在的生态系统保护和管理应用，寻求利用太阳能实现高度优化的半导体光催化剂仍然是一个重大挑战。

方法

因此，通过原位煅烧_{法合成了CaTiO 3} /gC ₃ N ₄异质结构，并通过不同的表征技术（如FT-IR、XRD、SEM、 EDX 、X射线图谱、循环伏安法）研究了其结构。 CV）、EIS 和DRS 技术。

重大发现

根据 Scherrer 和 Williamson-Hall 使用 XRD 结果估计复合材料样品的平均微晶尺寸分别为 3.8 nm 和 3.5 nm。_{CaTiO 3}、gC ₃ N ₄和CaTiO ₃ /gC ₃ N ₄样品的pHpzc值约为8.6、5.5和6.5 。基于DRS数据，gC ₃ N ₄、CaTiO ₃和CaTiO ₃ /gC ₃ N ₄的评估带隙能量分别为2.76、3.5和2.6 eV。EIS 和 CV 数据证实了复合材料中电荷载流子的转移更好。所提出的CaTiO ₃ /gC ₃ N _{4复合材料}在紫外光和可见光照射下对水溶液中的吉米沙星的光降解表现出协同效应。CaTiO ₃ :gC ₃ N ₄比例的变化改变了所得催化剂的光催化活性。