Simple preparation method for Styrofoam–TiO₂ composites and their photocatalytic application for dye oxidation and Cr(vi) reduction in industrial wastewater

Abstract

This study investigates a simple method for the preparation of floating photocatalysts in which the surface of expanded polystyrene (EPS) is partially dissolved using a diluted solvent that contains TiO2 particles.

Recent advances in the treatment and recycling of mineral processing wastewater

“…In fact, an increasing number of optimization and renovation for MPW photocatalytic treatment has been undertaken. 73,74 As is well known, reliable photocatalytic materials can significantly improve the efficiency of photodegradation. Previous studies mainly employed TiO 2 photocatalysts, which can degrade some refractory organic pollutants by producing free radicals (˙OH, ˙O2…”

Introducing anthracene and amino groups into Ln-OFs for the photoreduction of Cr(vi) without additional photosensitizers or cocatalysts

“…[17][18][19] Some typical inorganic photocatalysts with multifunctional characteristics have been reported by scientific researchers, such as TiO 2 , α-Fe 2 O 3 , In 2 S 3 , and ZnO. [20][21][22][23][24] However, there are some shortcomings, such as the electronhole pair recombination rate, fast agglomeration speed, and low solar energy utilization, which limit the efficiency of the above catalysts for Cr(VI) removal. [25][26][27] Therefore, the development of efficient photocatalysts to adsorb and convert Cr(VI) into a less toxic product Cr(III) is highly desired.…”

Greener Method for the Application of TiO2 Nanoparticles to Remove Herbicide in Water

“…Several substrates including synthetic polymers [29][30][31][32], polymer composites [33][34][35][36][37], wood [38], ceramics and silica [39,40], natural light-weight stones [41][42][43], and concrete [44] have been used to support photocatalysts. Testing in a laboratory revealed that FPWT efectively removes a variety of organic pollutants.…”