Synthesis of novel ternary heterojunctions via Bi2WO6 coupling with CuS and g-C3N4 for the highly efficient visible-light photodegradation of ciprofloxacin in wastewater

Heterojunction Photocatalyst Loaded on Electrospun Nanofibers for Synergistic Enhanced Photocatalysis and Real-Time Temperature Monitoring

“…The misuse of antibiotics in medicine, agriculture, and animal husbandry has caused serious damage to the water environment, posing a threat to ecosystems and human health. − Tetracycline hydrochloride (TCH), as a well-known antibiotic, cannot be effectively eliminated due to its low metabolic rate and poor degradability. − Among many TCH removal methods, photocatalytic technology has attracted a lot of interest for its safe, green, and sustainable solar purification. − In recent years, the photocatalytic activity of bismuth-based compounds has attracted hot research due to their admirable energy band structure and good photostability. − Especially, bismuth tungstate (Bi 2 WO 6 ) has been widely used for energy generation and pollutant degradation. , However, its catalytic activity is limited by the lower photogenerated electron and the efficiency of hole separation. − Therefore, the proposal of an attractive strategy to overcome these shortcomings of Bi 2 WO 6 is imminently demanded.…”

Preparation and photocatalytic properties of a CdWO4/Bi2WO6 binary heterojunction

“…The equilibrium potentials at the flat band determined from the Mott–Schottky plot are 0.086 V ( vs. Ag/AgCl) and 0.132 V ( vs. Ag/AgCl, pH = 7) 55 for Bi 2 WO 6 and CdWO 4 , respectively, which are equal to 0.286 V and 0.332 V ( vs. NHE). 56 The results indicate that Bi 2 WO 6 and CdWO 4 are respectively n-type and p-type semiconductors. For n-type semiconductors, it is widely acknowledged that the conduction band potential is approximately 0.2 V lower than the flat band potential.…”

Construction of a flower-like S-scheme Bi2WO6/BiOCl nano-heterojunction with enhanced visible-light photocatalytic properties

“…The flat band potential determined by the Mott-Schottky plot is 0.074 V and À0.060 V (vs. Ag/AgCl, pH = 7) for Bi 2 WO 6 and BiOCl, respectively, which is equal to 0.27 V and 0.14 V (vs. the normal hydrogen electrode NHE, pH = 7). 63 The positive slope of the linear plot indicates the n-type semiconductor characteristics of Bi 2 WO 6 , which has a conduction band CB level more negative at about 0.2 V than the flat band potential, and the negative slope of the linear plot indicates the p-type semiconductor characteristics of BiOCl, which has a valence band VB level more positive at about 0.2 V than the flat band potential. 62,64 Therefore, the bottom CB level of Bi 2 WO 6 and VB potential of BiOCl is estimated to be 0.07 eV and 0.34 eV, respectively.…”