Engineered Cu3P–ZnWO4 heterojunction integrated with porous polymer monolithic template for enhanced photocatalytic degradation of organic pollutants
Abstract
Abstract The strategic fabrication of efficient, renewable, and sustainable visible photon-responsive advanced heterogeneous photocatalysts is currently relevant for decontaminating pharmaceutical pollutants. Here, we report the fabrication of a unique Cu 3 P–ZnWO 4 (CZ) heterojunction nanocomposite (NC) uniformly decorated onto a porous poly(EGDMA) monolith (PEM) template, which features a remarkable surface area, excellent structural integrity, and high porosity. Varying ratios of Cu 3 P to that of ZnWO 4 reveal a sequence of Z-scheme heterostructured NCs, i.e., CZ-5, CZ-10, CZ-15, CZ-20, and CZ-25. The structurally engineered translucent PEM template and the CZ NCs decorated PEM are characterized by p-XRD, FT-IR, FE-SEM-EDAX, HR-TEM-SAED, VB-XPS, BET/BJH, UV–Vis-DRS, and PL analysis to confirm the formation of the desired photocatalyst with impressive structural and surface morphological features. The photocatalytic degradation efficiency shows that the CZ-20 NC-dispersed PEM (CZ-20@PEM) photocatalyst proffers robust photocatalytic performance for decontaminating moxifloxacin residues. Moreover, to determine the optimal conditions for fast and efficient photocatalysis, the influence of various analytical parameters, including solution pH (2–9), photocatalyst dosage (10–150 mg), pollutant concentration (10–50 ppm), oxidizers (KBrO 3 & H 2 O 2 ), and light intensities (150–300 W/m 2 ) has been comprehensively studied. The CZ-20@PEM photocatalyst exhibits ≥ 99.4%…
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