Surfactants assisted SiO2-Cu@Fe2O

Research Progress on the Photo-Driven Catalytic Production of Biodiesel

“…Although these photocatalysts have good catalytic performance on oils or ester, they are noble metals or heavy metals. Therefore, Haq et al prepared SiO 2 -Cu@Fe 2 O 3 photocatalyst with hexadecyl trimethyl ammonium bromide as a surfactant, which could efficiently catalyze the conversion of edible waste oil into biodiesel (yield: 98%) ( Ul Haq et al, 2021 ). Compared with the reported catalysts, SiO 2 -Cu@Fe 2 O 3 had superior photocatalytic performance, low preparation cost, and safety, but the preparation method is complex.…”

Nanofibers Loaded with Nonthermal Nitrogen Plasma-Treated g-C3N4 for Efficient Visible Light-Driven Photodegradation of Omethoate

“…Photocatalytic degradation methods, which can be directly driven by sunlight, are gaining more and more attention compared to physical adsorption methods with higher costs and time-consuming microbial degradation methods. − Some transition metal compounds with good photocatalytic activity have been used for the photocatalytic degradation of pesticides. − However, these photocatalysts often only utilize a relatively small portion of the ultraviolet spectrum in sunlight, and there is also a risk of causing secondary metal contamination of agricultural products. , In recent years, as a visible light-induced metal-free semiconductor material, graphitic carbon nitride (g-C 3 N 4 ) and its derivatives have received increasing attention in the field of photocatalytic degradation of organic pesticides due to their many advantages. , g-C 3 N 4 is considered a nontoxic and biocompatible material that can be easily synthesized from readily available urea at low cost, which means it can be safely used for postharvest processing of agricultural products without posing a threat to human health and the environment. , The band gap of g-C 3 N 4 is 2.7 eV, which has a high capacity for absorbing visible light (44%) as the main part of solar energy and separating/transferring photogenerated electron–hole pairs . At the same time, g-C 3 N 4 provides a photocatalysis active site that can effectively trigger the photocatalysis reaction in the process of photocatalysis, which is conducive to achieving enhanced photocatalysis efficiency. − …”