Recent advances of bismuth titanate based photocatalysts engineering for enhanced organic contaminates oxidation in water: A review.

Over more than three decades, the scientific community has been contentiously interested in structuring varying photocatalytic materials with unique properties for appropriate technology transfer. Most of the existing reported photocatalysts in the literature show pros and cons by considering the type of application and working conditions. Bismuth titanate oxides (BTO) are novel photocatalysts that raised recently towards energy and environmental-related applications.

Z-scheme WO/PANI heterojunctions with enhanced photocatalytic activity under visible light: A depth experimental and DFT studies.

A WO@PANI heterojunction photocatalyst with a various mass ratio of polyaniline to WO was obtained via the in situ oxidative deposition polymerization of aniline monomer in the presence of WO powder. The characterization of WO@PANI composites was carried via X-ray diffraction (XRD), scanning electron microscopy (SEM-EDS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible diffuse reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscopy (PL). The photocatalytic efficiency of WO@PANI photocatalysts was assessed by following the decomposition of the Rhodamine B (RhB) dye under visible light irradiation (λ >420 nm).

Recent progress on the enhancement of photocatalytic properties of BiPO using π-conjugated materials.

Semiconductor photocatalysis is regarded as most privileged solution for energy conversion and environmental application. Recently, photocatalysis methods using bismuth-based photocatalysts, such as BiPO, have been extensively investigated owing to their superior efficacy regarding organic pollutant degradation and their further mineralization into CO and HO. It is well known that BiPO monoclinic phase exhibited better photocatalytic performance compared to Degussa (Evonik) P25 TiO in term of ultraviolet light driven organic pollutants degradation.

Role of thermal decomposition process in the photocatalytic or photoluminescence properties of BiPO polymorphs.

Thermal decomposition process was used to obtain modified photocatalytic and/or photoluminescence properties of bismuth phosphate polymorphs. The precursor BiPO , 0.7H O was synthesized by a coprecipitation route.

Influence of Sr-doping on structural, optical and photocatalytic properties of synthesized Ca(PO).

Well-crystallized Ca(PO) doped and un-doped nano-particles with the maximum strontium content (40 wt% Sr) followed by calcination at 800 °C for 3 h were synthesized via facile co-precipitation method. DTA/TGA, X-ray diffraction (XRD), energy dispersive scanning electron microscopy (SEM/EDX), UV-vis diffuse reflectance spectrum (UV-vis DRS), Raman spectroscopy and photoluminescence (PL) techniques were used for material characterization. The (XRD) patterns of as-synthesized Sr-doped Ca(PO) solid solution samples exhibited a systematic shift toward lower angles by possessing a single rhombohedral crystal structure without any secondary phases.

Study of two tungstates Ca0.5 Cd0.5 WO4 and Ca0.2 Cd0.8 WO4 by transmission electron microscopy.

To better understand the role of crystal structures and local disorder in the photonic properties of the system (1 - x)CaWO4  - xCdWO4 with 0 < x < 1, two specific phases with compositions x = 0.5 (scheelite phase) and 0.8 (wolframite phase) have been studied by scanning and transmission electron microscopies.