Abstract:Vanadium oxide has been largely exploited as a catalyst in many industrial applications. In this article, we show the synthesis of vanadium oxide (V2O5): Nickel Oxide (NiO) composite using sol-gel method at optimum conditions. The composite nanomaterials were used to remove methyl orange from waste water via harnessing the photocatalytic activity of it which showed an excellent efficiency of removal at 88%, and 93% after the exposure to the light, and light with heating respectively. This will pave the way int… Show more
“…The starting amount of MO in deionized water was 1 mg/mL and the nanomaterial loading was 2 mg/15 mL while the UV absorbance was recorded at different time intervals ranging between 0 and 20 minas presented in Figure 4 . Consistent with the published literature, 2 – 10 in the present work, the degradation calibration graphs were prepared by taking the λ max after 2, 5, 10, and 15 minas given in Figure 4 . Figure 4 ( A ) UV Vis spectrum of MO/MoO 3 -NiO-PdO-Pd solution in the presences of solar light, ( B ) absorption spectrum of MO/MoO 3 -NiO-PdO-Pd in dark conditions, and ( C ) the degradation percentages of MO by MoO 3 -NiO-PdO-Pd nanomaterial.…”
Section: Resultsmentioning
confidence: 70%
“…The starting amount of MO in deionized water was 1 mg/mL and the nanomaterial loading was 2 mg/15 mL while the UV absorbance was recorded at different time intervals ranging between 0 and 20 minas presented in Figure 4. Consistent with the published literature, [2][3][4][5][6][7][8][9][10] in the present work, the degradation calibration graphs were prepared by taking the λ max after 2, 5, 10, and 15 minas given in Figure 4.…”
Section: Catalytic Activity Of Moo 3 -Nio-pdo-pd To Degrade Momentioning
confidence: 81%
“…It is a well known carcinogen pollutant [5][6][7] thus its elimination from the water is extremely important. [7][8][9][10][11] The different strategies and/or technologies are reported to treat/remove MO from water environments. 2,3,[8][9][10][11] One such greatly investigated techniques is catalysis, ie catalytic degradation of organic dyes.…”
Section: Introductionmentioning
confidence: 99%
“…1,2,[9][10][11][12][13] Transition metal oxides have proven to be economic and suitable photocatalysts to remove the organic dyes. [10][11][12][13][14][15][16][17] Moreover, metal oxide nanocomposites and mixed metal oxide nanomaterials significantly enhance the photocatalytic ability by altering the optical properties and by introducing the surface oxygen atoms that inhibit charge carrier recombination for longer periods of time. 2,4,18,19 The functional groups such as hydroxyl and carboxyl in the metal oxide-based materials show greater hydrophilicity as well as negative charge densities to assist the degradation of organic pollutants in the hydro environment.…”
Introduction: The catalytic behavior of metal oxide nanomaterials for removal of organic pollutants under dark ambient conditions, without any additional stimulant, is of great interest among the scientific community. Methods: In this account, a nanomaterial of ternary metal oxides (MoO 3-NiO-PdO-Pd) was synthesized via greener approach and was explored for degradation of methyl orange in water environment in dark ambient conditions in comparison with light conditions. The biochemical species of Abies pindrow were treated with aqueous solution of precursor's salt following sol gel synthesis strategy. We further attuned morphology and chemistry of MoO 3-NiO-PdO-Pd by incorporating bioactive compounds of A. pindrow. Result and Discussion: The bio-fabricated MoO 3-NiO-PdO-Pd revealed outstanding catalytic behavior with 92% degradation of methyl orange within 15 min in the dark at ambient temperature and pressure. Whereas, in the presence of visible light irritation, the catalyst degraded 97% of methyl orange in 15 min. According to the reaction kinetics of degradation, the catalysts illustrated good stability in light (R 2 =0.93) as well as in dark conditions (R 2 =0.98). Furthermore, the outstanding reusability and recyclability of the synthesized nanomaterial was observed for four runs of the experiment under dark and light conditions. Conclusion: Therefore, A. pindrow-synthesized MoO 3-NiO-PdO-Pd nanocatalyst demonstrated significant potential for detoxification of organic pollutants for water remediation.
“…The starting amount of MO in deionized water was 1 mg/mL and the nanomaterial loading was 2 mg/15 mL while the UV absorbance was recorded at different time intervals ranging between 0 and 20 minas presented in Figure 4 . Consistent with the published literature, 2 – 10 in the present work, the degradation calibration graphs were prepared by taking the λ max after 2, 5, 10, and 15 minas given in Figure 4 . Figure 4 ( A ) UV Vis spectrum of MO/MoO 3 -NiO-PdO-Pd solution in the presences of solar light, ( B ) absorption spectrum of MO/MoO 3 -NiO-PdO-Pd in dark conditions, and ( C ) the degradation percentages of MO by MoO 3 -NiO-PdO-Pd nanomaterial.…”
Section: Resultsmentioning
confidence: 70%
“…The starting amount of MO in deionized water was 1 mg/mL and the nanomaterial loading was 2 mg/15 mL while the UV absorbance was recorded at different time intervals ranging between 0 and 20 minas presented in Figure 4. Consistent with the published literature, [2][3][4][5][6][7][8][9][10] in the present work, the degradation calibration graphs were prepared by taking the λ max after 2, 5, 10, and 15 minas given in Figure 4.…”
Section: Catalytic Activity Of Moo 3 -Nio-pdo-pd To Degrade Momentioning
confidence: 81%
“…It is a well known carcinogen pollutant [5][6][7] thus its elimination from the water is extremely important. [7][8][9][10][11] The different strategies and/or technologies are reported to treat/remove MO from water environments. 2,3,[8][9][10][11] One such greatly investigated techniques is catalysis, ie catalytic degradation of organic dyes.…”
Section: Introductionmentioning
confidence: 99%
“…1,2,[9][10][11][12][13] Transition metal oxides have proven to be economic and suitable photocatalysts to remove the organic dyes. [10][11][12][13][14][15][16][17] Moreover, metal oxide nanocomposites and mixed metal oxide nanomaterials significantly enhance the photocatalytic ability by altering the optical properties and by introducing the surface oxygen atoms that inhibit charge carrier recombination for longer periods of time. 2,4,18,19 The functional groups such as hydroxyl and carboxyl in the metal oxide-based materials show greater hydrophilicity as well as negative charge densities to assist the degradation of organic pollutants in the hydro environment.…”
Introduction: The catalytic behavior of metal oxide nanomaterials for removal of organic pollutants under dark ambient conditions, without any additional stimulant, is of great interest among the scientific community. Methods: In this account, a nanomaterial of ternary metal oxides (MoO 3-NiO-PdO-Pd) was synthesized via greener approach and was explored for degradation of methyl orange in water environment in dark ambient conditions in comparison with light conditions. The biochemical species of Abies pindrow were treated with aqueous solution of precursor's salt following sol gel synthesis strategy. We further attuned morphology and chemistry of MoO 3-NiO-PdO-Pd by incorporating bioactive compounds of A. pindrow. Result and Discussion: The bio-fabricated MoO 3-NiO-PdO-Pd revealed outstanding catalytic behavior with 92% degradation of methyl orange within 15 min in the dark at ambient temperature and pressure. Whereas, in the presence of visible light irritation, the catalyst degraded 97% of methyl orange in 15 min. According to the reaction kinetics of degradation, the catalysts illustrated good stability in light (R 2 =0.93) as well as in dark conditions (R 2 =0.98). Furthermore, the outstanding reusability and recyclability of the synthesized nanomaterial was observed for four runs of the experiment under dark and light conditions. Conclusion: Therefore, A. pindrow-synthesized MoO 3-NiO-PdO-Pd nanocatalyst demonstrated significant potential for detoxification of organic pollutants for water remediation.
“…Applications within the chemical synthesis field remain nevertheless rare even though variety of studies have been reported targeting new photocatalytic processes via synthesizing of composite or doped catalyst. Wide range of reaction types has been presented by different authors, which includes oxidations [1][2][3], reductions [4], isomerizations [5], additions [6], cyclizations [7] and so on. As a fact, conventional industries tactics in this area rarely meet the present day sustainability requirements, environmental safety and power performance essentially for a green processes [6].…”
This study is to evaluate the performance of TiO 2 as a photocatalyst for polyhydroxybutyrate (PHB) in different concentrations. Five different concentrations of TiO 2 nanoparticles (0.001-0.005 wt%) have been added to PHB blend to produce modified PHB films. The conducting characterizations using FTIR, UV, SEM and optical microscope confirmed the photocatalytic activity of TiO 2 on the surface of PHB films. The SEM analyses after irradiation reports show that the PHB thin films doped with different concentrations of TiO 2 nanoparticles have piece of ice rock-resembling structure nature with heterogeneous surface morphology. After irradiation, the photodecomposition rate constant showed the highest value in the presence of TiO 2 with concentration (0.005 wt%). Therefore, TiO 2 nanoparticles, in particular high concentration (0.005 wt%), are considered as a photocatalyst for PHB films (30 μm thickness) photodegradation.
In recent years, the degradation of organic dyes under dark conditions, at room temperature and atmosphere pressure, without additional lights or chemical stimulants, has been widely investigated. Here, a nanocomposite of ZnO‐CoMoO4 was synthesized using an organic template and investigated as a catalyst to degrade methyl orange in aqueous environment under dark, ambient conditions. The organic compounds of Abies Pindrow Royle were reacted with a precursor solution following sol–gel synthesis methodology to modify the chemistry and morphology of ZnO‐CoMoO4, so formed. The structure of the nanocomposite was confirmed by X‐ray diffraction, Raman spectroscopy and energy dispersive X‐ray spectroscopy while nanostructures were examined by field emission scanning electron microscopy. Organic functional groups were determined by Fourier transform infrared spectroscopy and Gas chromatography–mass spectrometry. The organic compound incorporated nanocomposite was revealed to be an excellent catalyst with 95% degradation of methyl orange in aqueous environment under dark ambient conditions within 10 min. The catalyst also revealed 99% degradation of azo dye in the presence of solar light. Furthermore, the catalysts illustrated good stability with pseudo first order kinetics (R2 < 1) in the light as well as in the dark conditions with outstanding reusability till four cycles of experiments. Therefore, nanostructure and organic species of Abies Pindrow Royle were found to enhance the catalytic behavior of ZnO‐CoMoO4 towards methyl orange degradation even in dark conditions.
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