Photo-catalytic degradation of methyl violet dye using zinc oxide nano particles prepared by a novel precipitation method and its anti-bacterial activities

A novel visible light active N-doped ZnO for photocatalytic degradation of dyes

“…To study the effect of operating parameters on the dye degradation by N-ZnO under visible and UVC light, the experiments were performed by varying key operating parameters, namely, dye concentration (5-25 mg/L), catalyst concentration (0.5-2.5 g/L), pH (5)(6)(7)(8)(9), and salinity (0.3-9.6 g/L NaCl). The kinetics of dye degradation were studied by adopting the Langmuir-Hinshelwood pseudo first order kinetic model.…”

“…Due to its lower cost, higher mobility of charge carriers, and ability to absorb a larger fraction of solar spectrum, ZnO is often preferred to TiO 2 [7]. Several studies have reported the effectiveness of ZnO for photocatalytic degradation of organic compounds, such as resazurin [8] and methyl violet [9], in the presence of UV light. The efficiency for degradation of resazurin and methyl violet reaches around 70% within only 40 min of UV irradiation.…”

Al-Sn doped ZnO thin film nanosensor for monitoring NO2 concentration

“…The 2θ values of all the samples were well-matched with JCPDS No. 89-1397 [30]. Because the doping concentrations of Al and Sn were very low in comparison to ZnO, the diffraction peaks for Al and Sn were much reduced in the XRD pattern which showed dominant ZnO peaks.…”

Size controllable synthesis of cobalt vanadate nanostructures with enhanced photocatalytic activity for the degradation of organic dyes

“…of Co 3 V 2 O 8 nanoparticles using UV irradiation provides necessary conditions for the formation of reactive oxygen species leads to the degradation of organic contents found in the aqueous medium. The following equations explain about the various reaction sequences of photo catalytic degradation[42]. The effect of various parameters including molar ratios of Co: H 2 salen and Co:V on type of products, morphology and size of cobalt vanadate nanoparticles was investigated to reach optimum condition.…”