Photochemical synthesis of the Fe0/C3N4/MoS2 heterostructure as a highly active and reusable photocatalyst

Study on synthesis of MoS2 modified g-C3N4 materials for treatment of Direct black 38 dye

“…The g-C 3 N 4 sample was denoted as CN550. The MoCN550 samples were prepared by hydrothermal method at low temperature [16]. In brief, 1.0 g of g-C 3 N 4 was dispersed by sonication in 100 mL of distilled water containing 0.07 g of (NH 4 ) 6 Mo 7 O 24 •4H 2 O and 0.1 g of Na 2 S•9H 2 O.…”

“…Loading metal oxides on the surface of g-C 3 N 4 , doping non-metal elements (B, C, S, and N) and combining with proper semiconductors could evidently promote the separation efficiency of photo-induced electron-hole pairs leading to enhance photodegradation performance [8]. Up to now, g-C 3 N 4 -based photocatalysts such as g-C 3 N 4 /Fe 3 O 4 [9], g-C 3 N 4 /Ag 2 SO 4 [10], g-C 3 N 4 /Fe 3 O 4 /Ag 2 CrO 4 [11], g-C 3 N 4 /CdS-Ag [12], g-C 3 N 4 /MoS 2 [13][14][15], g-C 3 N 4 /Fe/MoS 2 [16] were considered as the efficient photocatalysts for degradation of dyes. As an indirect-gap semiconductor, MoS 2 had a rather narrow band gap (1.29 eV) in which, its conduction band (CB) and valence band (VB) edge potentials were −0.1 eV and + 2.0 eV, respectively.…”

Photocurrent Response and Progesterone Degradation by Employing WO3 Films Modified with Platinum and Silver Nanoparticles

“…The degradation efficiency (�) was calculated according to the following equation: [62] h ¼ In this investigation, three configurations were considered: (i) photolysis by irradiation of 10 mL progesterone in the supporting electrolyte without the photocatalyst film, using only a clean FTO-glass; (ii) heterogeneous photocatalysis (HP) using a system with a photocatalyst film; and (iii) electrochemically assisted heterogeneous photocatalysis (EHP), which was carried out with photoelectrodes polarized in + 0.7 V vs Ag/ AgCl.…”

“…The kinetic investigation occurred in under conditions of darkness and irradiation for 3 h; aliquots were collected at different times and analyzed using the UV-vis spectrophotometer. The degradation efficiency (�) was calculated according to the following equation: [62] h ¼…”

Boosting Charge-Transfer Efficiency by Simultaneously Tuning Double Effects of Metal Nanocrystal in Z-Scheme Photocatalytic Redox System

“…Heterogeneous photocatalysis based on semiconductors represents a fascinating technique to achieve highly efficient solar energy conversion to chemical energy. The efficiency of solar energy conversion is heavily dependent upon light absorption, charge separation, migration, and recombination in photocatalysts, with an ideal photocatalyst excelling in all of these four aspects. , In recent years, worldwide efforts have been devoted to developing diverse strategies to fabricate efficient photocatalysts with high solar conversion efficiency. − Among which, Z-scheme photocatalytic systems have been gaining particular attention due to their great potential for mimicking the natural photosynthesis process. − Up to date, there have been primarily three categories of Z-scheme photosynthetic systems, including direct Z-scheme without an electron mediator, , Z-scheme with redox mediators in solution, , and three-component (3C) all-solid-state Z-scheme. , Particularly, 3C all-solid-state Z-scheme photocatalytic system demonstrates unique merits in facilitating the vectorial electron-transfer process and avoiding backward reactions involving redox mediators over its two counterparts, which endows it with more possibilities to alleviate the energy and environmental crises …”