Effect of the supported ZnO on clinoptilolite nano-particles in the photodecolorization of semi-real sample bromothymol blue aqueous solution

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

“…More compounds get absorbed onto the surface of photocatalysts when the targeted pollutant increases. Consequently, it decreases the competitive adsorption of O 2 and OH -on the active sites of catalysts and decreases the generation rate of O 2 · -and ·OH (Bahrami and Nezamzadeh-Ejhieh 2015). As a result, there is an inadequate amount of ·OH species to treat highly concentrated wastewater and thus reduce the degradation efficiency.…”

“…UV-based homogenous and heterogeneous AOPs are also not efficient in treating wastewater with high pollutant concentration due to the insufficient penetration of UV radiation. An increase in the pollutant concentration results in the reduced path length of photons entering the solution and this ultimately reduces the number of photons absorbed on the catalysts and decreases the rate of degradation (Bahrami and Nezamzadeh-Ejhieh 2015). In addition, an increase in dye concentration in ozonation systems reduces the color and total organic carbon (TOC) removal at steady state, which means that O 3 consumption potentially increases in this situation (Soares et al 2006, Mahmoodi 2013).…”

Photocatalytic degradation of bisphenol A in the presence of C-doped ZnO: Effect of operational parameters and photodegradation mechanism

“…The increase in the catalyst concentration is beneficial to the formation of photogenerated electrons-holes, and other reactive oxygen species responsible for the molecule degradation [43]. However, as the catalyst concentration increases continuously, the particles agglomerate and then the specific surface areas are reduced and finally exhibit a depressed photocatalytic activity.…”

Analysis of methyldopa in the presence of phenylephrine using electrocatalytic effect of a ferrocene derivative at a surface of feather like La3+/ZnO nano‐flowers modified carbon paste electrode

“…It can be widely applied due to its unique properties, including broad band gap of 3.37 eV, large exciton binding energy of 60 meV at ambient temperature, larger than some main semiconductors (GaN and ZnSe), thermal and mechanical stabilities, piezoelectric and pyroelectric features, electrochemical and optoelectronic nature and biocompatibility. Accordingly, there are multiple available approaches to produce variable ZnO nanomaterials like nanorods, nanowires, nanobelts, nanoflowers, nanodisks, nanosheets, nanospirals and nanotubes …”