Preparation of InYO3 catalyst and its application in photodegradation of molasses fermentation wastewater

Qin, Zhangfeng; Liang, Yi; Liu, Zili; Jiang, Weiqing

doi:10.1016/s1001-0742(10)60540-2

Cited by 15 publications

(6 citation statements)

References 16 publications

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“…The study by Navgire et al ( 2012 ) also achieved effective photodegradation of the molasses in removing COD (90%) and colour (70%) using MoO 3 –TiO 2 nanocrystalline composite catalyst. Indium yttrium oxide (InYO 3 ) photocatalyst was prepared and calcined at 700 °C in the study of Qin et al ( 2011 ), and it showed higher photocatalytic activity in the photodegradation of molasses fermentation wastewater (93% COD removal and 98% decolorization). Hence, the calcination of ZnO at a high temperature was recommended and could be applied to improve photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of Sugarcane Vinasse Using ZnO Photocatalyst: Operating Parameters, Kinetic Studies, Phytotoxicity Assessments, and Reusability

et al. 2021

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Photocatalytic degradation performance is highly related to optimized operating parameters such as initial concentration, pH value, and catalyst dosage. In this study, the impact of various parameters on the photocatalytic degradation of anaerobically digested vinasse (AnVE) has been determined through decolourization and chemical oxygen demand (COD) reduction efficiency using zinc oxide (ZnO) photocatalyst. In this context, the application of photocatalytic degradation in treating sugarcane vinasse using ZnO is yet to be explored. The COD reduction efficiency and decolourization achieved 83.40% and 99.29%, respectively, under the conditions of 250 mg/L initial COD concentration, pH 10, and 2.0 g/L catalyst dosage. The phytotoxicity assessment was also conducted to determine the toxicity of AnVE before and after treatment using mung bean ( Vigna radiata ). The reduction of root length and the weight of mung bean indicated that the sugarcane vinasse contains enormous amounts of organic substances that affect the plant's growth. The toxicity reduction in the AnVE solution can be proved by UV–Vis absorption spectra. Furthermore, the catalyst recovery achieved 93% in the reusability test. However, the COD reduction efficiency and decolourization were reduced every cycle. It was due to the depletion of the active sites in the catalyst with the adsorption of organic molecules. Thus, it can be concluded that the photocatalytic degradation in the treatment of AnVE was effective in organic degradation, decolorization, toxicity reduction and can be reused after the recovery process. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of Sugarcane Vinasse Using ZnO Photocatalyst: Operating Parameters, Kinetic Studies, Phytotoxicity Assessments, and Reusability

et al. 2021

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“…Mathematical simulation results indicated that the CB of InYO 3 is composed of In 5p and Y 4d orbitals, whereas the VB is composed of O 2p and In 5s orbitals. This photocatalyst was tested for the photodegradation of molasses fermentation wastewater, [42] where activity in general decreased with increasing calcination temperature. After 150 min UV irradiation, the photocatalytic degradation levels for the samples calcined at 600, 700, 800, 900, and 950 C were 90.35%, 98.23%, 81.29%, 73.80%, and 52.37%, respectively.…”

Section: Ternary and Quaternary Indium Oxides As Photocatalystsmentioning

confidence: 99%

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

Friedmann

Caruso

2021

Solar RRL

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In2O3 is an emerging material in the photocatalysis research area, with a surge in the number of studies examining indium‐based materials as photocatalysts in recent years. The materials of interest, herein, span the simple indium oxide in different polymorphs and morphologies, ternary, and even quaternary indium oxides, heterostructured systems, all in pure or doped forms. These indium‐based materials offer advantages as photocatalysts compared with the conventional titanium dioxide‐based photocatalysts. Highlights in the literature include reports of the ability of indium oxide to degrade difficult to decompose aqueous organic contaminants while also offering opportunities for visible light activation. These are exciting achievements in this field of research. The unique properties that these materials offer are uncovered, while giving insights as to how indium oxides and related indium‐based materials can be used, in what capacity and the compositional requirements when matched with other semiconductors to achieve high‐performing photocatalysts.

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“…Its oxides possess numerous benefits, including strong selectivity of adsorption and various types of crystallinity, as well as good electronic conductivity and thermal stability 4 [18,19]. Currently, Y 3+ -doping has been utilized to enhance the photocatalytic properties of different metal oxides, such as PbYO [20], Y 3+ /TiO2 [21], InYO3 [22], and Y 3+ /Bi5Nb3O15 [23].…”

Section: Introductionmentioning

confidence: 99%

Structural, Morphological and Optical Bandgap Analysis of Multifunction Applications of Y2O3 -ZnO Nanocomposites : Varistors and Visible Photocatalytic Degradations of Wastewater

AlAbdulaal

AlShadidi

Hussien

et al. 2021

Preprint

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In this study, a combustion method as an efficient, easy, low-cost, and eco-friendly technique was used to synthesize nano-ZnO as a matrix with different yttrium doping ratios with different doping concentrations. Not only X-ray diffraction (XRD), but also scanning electron microscopy (SEM), and Fourier transformation Infrared spectroscopy (FT-IR) technique employed to characterize the structural and surface morphology of the Y2O3-ZnO nanocomposites. The obtained results supported ZnO's growth from crystalline to satisfactory nanoparticle structure by changing the yttrium doping concentrations inside ZnO nanoparticles. Moreover, UV-Vis diffuse reflectance spectroscopy, AC electrical conductivity, and current-voltage characteristics were considered to characterize the effects of yttrium doping on the energy bandgaps and electrical/dielectric properties and discussed the parameters of the ceramic varistors of the studied Y2O3-ZnO nano-complex oxides. The photocatalytic degradation efficiency of phenol, Methylene Blue, and Rhodamine B was investigated using all prepared Y2O3-ZnO nanostructured samples. As the yttrium doping ratios increased, the photocatalytic efficiency increased. After the addition of moderate Y3+ ions-doping, Further generation of hydroxyl radicals over ZnO. For Y2O3-ZnO (S5), the optimal photocatalyst is a degradation of 100 % of phenol, Methylene Blue, and Rhodamine B solutions compared to 80% of photocatalysis for ZnO stand alone. The prepared Y2O3-ZnO nanostructured materials are considered novel potential candidates in broad nano-applications ranging from biomedical and photocatalytic degradation for organic dyes and phenol to environmental and varistor applications.

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Preparation of InYO3 catalyst and its application in photodegradation of molasses fermentation wastewater

Cited by 15 publications

References 16 publications

Photocatalytic Degradation of Sugarcane Vinasse Using ZnO Photocatalyst: Operating Parameters, Kinetic Studies, Phytotoxicity Assessments, and Reusability

Photocatalytic Degradation of Sugarcane Vinasse Using ZnO Photocatalyst: Operating Parameters, Kinetic Studies, Phytotoxicity Assessments, and Reusability

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

Structural, Morphological and Optical Bandgap Analysis of Multifunction Applications of Y2O3 -ZnO Nanocomposites : Varistors and Visible Photocatalytic Degradations of Wastewater

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