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Graphical abstract Highlights • Efficient Fe-ZrO 2 /g-C 3 N 4 photocatalyst successfully prepared. • FZ-GCN is efficient for the degradation of acarbose (ACB) and rhodamine (RhB). • Prepared catalyst have more degradation ability under visible light. • Acarbose (ACB) degradation products was studied. Abstract Fe-ZrO 2 imbedded g-C 3 N 4 was successfully prepaid by solvo-thermal method for the photo-degradation of anti-diabetic drug, acarbose (ACB). The synthesized material were characterized with the help of FT-IR-Spectroscopy, X-ray diffraction, UV–vis-Spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, HPLC-MS and scanning electron microscopy. These characterization results indicated that the target materials was well prepared and photo-catalytically active. The target catalyst (Fe-ZrO 2 /g-C 3 N 4) showed very high photo-degradation rate against acarbose (ACB) and rhodamine (RhB). Presence of heterojunction between FZ and GCN increased the surface area and light absorbance capability. HPLC-MS scrutiny indicated that photo-degradation process, under visible light, split the ACB into lot of intermediates and finally degraded completely. [ABSTRACT FROM AUTHOR]

The vacuum tube method has been used for the construction of nondestructive and physically stable graphitic carbon nitride/graphene nanoplatelet composites and their photocatalytic behavior studied by measuring different photoactivities, such as photocurrent, photoluminescence, and the photodegradation of tetracycline hydrochloride under visible‐light irradiation. The formation of a heterojunction was confirmed by XRD, TEM, SEM, FTIR, XPS, and Raman spectroscopy. The results of this research indicate that the vacuum tube method is a facile, economic, and environmentally friendly approach to the preparation of composites. An ion‐trapping experiment indicated that, under visible light, the most effective photocatalyst generated the superoxide radical (O2·–) and holes (h+) to achieve the complete degradation of tetracycline hydrochloride. [ABSTRACT FROM AUTHOR]

A novel metal free, graphitic carbon nitride self-type heterojunction was successfully created. A self-type heterojunction between two different kind of graphitic carbon nitride with a promote charge separation ability, one was prepared by solvothermal using the dicyandiamide as precursor and other was prepared by direct heating from melamine precursor. This synthesis process is facile, economical and environment friendly. The confirmation of synthesis and heterojunction formation was based on the X-ray-Diffraction, Transmission electron microscopy, Scanning electron microscopy, Fourier transform infrared spectra, X-ray photoelectron spectroscopy and photocurrent. The potential difference in heterojunction between different types of g-C 3 N 4 is the main acting power for the proficient separation and transformation of photo generated charges. Degradation results indicated that, the removal of antibiotic from effluents, graphitic carbon nitride heterojunction (GCN-DM) pointedly enhanced the visible light catalytic activity over solo graphitic carbon nitride (GCN-D, GCN-M). The improved photocatalytic behaviour of heterojunction may be due to charge separation and transfer ability with prolong lifetime of photo-generated charge carrier. The results also indicated that the optical and surface area properties also play a significance role in enhancement of photo-catalytical ability of target photo-catalyst. [ABSTRACT FROM AUTHOR]