光催化
材料科学
漫反射红外傅里叶变换
扫描电子显微镜
傅里叶变换红外光谱
光谱学
石墨氮化碳
水溶液
分析化学(期刊)
介电谱
核化学
可见光谱
透射电子显微镜
化学工程
复合材料
化学
纳米技术
电化学
催化作用
有机化学
物理化学
光电子学
物理
工程类
量子力学
电极
作者
Adewumi Olufemi Oluwole,Phindile Khoza,Olatunde Stephen Olatunji
标识
DOI:10.1002/slct.202203601
摘要
Abstract The composites of graphitic carbon nitride (g‐C 3 N 4 ) doped with activated carbon (AC) were synthesized using the calcination method, and used as photocatalysts for the degradation of enrofloxacin in an aqueous system. The physical, morphology, and spectroscopic properties of the synthesized AC, bulk g‐C 3 N 4 , and AC/g‐C 3 N 4 composites were characterized using x‐ray diffraction spectroscopy (XRD), Fourier transforms infrared spectroscopy (FTIR), Brunauer‐Emmett‐Teller method (BET), scanning electron microscopy, energy dispersive x‐ray mapping (SEM‐EDX‐mapping), transmission electron microscopy (TEM) with high resolution‐transmission electron microscopy (HR‐TEM), ultraviolet‐visible diffuse reflectance spectroscopy techniques (UV‐Vis DRS), photoluminescence spectroscopy (PL), and electron impedance spectroscopy (EIS). The AC/g‐C 3 N 4 composites exhibited an extended visible light response and higher separation rate of photogenerated electron‐hole pairs compared to the bulk g‐C 3 N 4 . The 1 : 1AC/g‐C 3 N 4 composite showed superior photocatalytic performance, nearly seven times higher than the bulk g‐C 3 N 4 nanosheets, toward the degradation of enrofloxacin in aqueous solutions, under visible light irradiation. The high photocatalytic efficiency of AC/g‐C 3 N 4 composites may be attributed to the role played by the significantly improved surface area, and the occurrence of high photoinduced charge separation, as revealed by the morphological and opto‐spectroscopic characterization of the synthesized composites, and photocatalysis experimental data. Furthermore, the AC/g‐C 3 N 4 composites exhibited excellent recyclability and stability, making them potential candidates for use in environmental remediation.
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