{"title":"Solar light photocatalytic activity of CuO/TiO2 mixed oxide derived from conjugated azomethine metal complex for degradation of food colorants","authors":"Atul Kapoor, Pratibha, Jaspreet Kaur Rajput","doi":"10.1016/j.molliq.2022.120280","DOIUrl":null,"url":null,"abstract":"<div><p>This work illustrates the preparation of an effective photocatalyst, CuO/TiO<sub>2</sub> nano metal mixed oxide (NMMO). The desired synthesis was carried out by calcination assisted reaction of Cu[DBAPD]/TiO<sub>2</sub><span> at 650 °C. Additionally, the prepared nano metal mixed oxide material has also been confirmed by numerous characterization techniques such as XRD, FTIR, HRTEM, FESEM with EDS, XPS, BET, ESR and Photoluminescence which revealed the occurence of strong interfacial interactions between CuO and TiO</span><sub>2</sub><span>. The optical properties of the prepared NMMO have also been measured by UV–vis. spectroscopy. The prepared NMMO exhibited excellent photo-response for the total degradation of amaranth (99.21 %) as well as brilliant blue (99.68 %) after just 40 min during intense solar irradiation. It has been found that the photocatalytic degradation mechanism over the surface of CuO and TiO</span><sub>2</sub> can be well explained by considering the charge flow from TiO<sub>2</sub> to CuO. Such type of structure offered higher redox capability as well as improved separation of photogenerated charge carriers, thus providing phenomenal photocatalytic performance. In addition to this, the degradation process has been investigated utilizng mass spectrometry and UV–vis. spectral analysis. Moreover, the CuO/TiO<sub>2</sub>-NMMO photocatalytic material offered good stability and reusability and can therefore act as a strong contender to be use in environmental remediation.</p></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"366 ","pages":"Article 120280"},"PeriodicalIF":5.3000,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Liquids","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167732222018190","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 2
Abstract
This work illustrates the preparation of an effective photocatalyst, CuO/TiO2 nano metal mixed oxide (NMMO). The desired synthesis was carried out by calcination assisted reaction of Cu[DBAPD]/TiO2 at 650 °C. Additionally, the prepared nano metal mixed oxide material has also been confirmed by numerous characterization techniques such as XRD, FTIR, HRTEM, FESEM with EDS, XPS, BET, ESR and Photoluminescence which revealed the occurence of strong interfacial interactions between CuO and TiO2. The optical properties of the prepared NMMO have also been measured by UV–vis. spectroscopy. The prepared NMMO exhibited excellent photo-response for the total degradation of amaranth (99.21 %) as well as brilliant blue (99.68 %) after just 40 min during intense solar irradiation. It has been found that the photocatalytic degradation mechanism over the surface of CuO and TiO2 can be well explained by considering the charge flow from TiO2 to CuO. Such type of structure offered higher redox capability as well as improved separation of photogenerated charge carriers, thus providing phenomenal photocatalytic performance. In addition to this, the degradation process has been investigated utilizng mass spectrometry and UV–vis. spectral analysis. Moreover, the CuO/TiO2-NMMO photocatalytic material offered good stability and reusability and can therefore act as a strong contender to be use in environmental remediation.
期刊介绍：
The journal includes papers in the following areas:
– Simple organic liquids and mixtures
– Ionic liquids
– Surfactant solutions (including micelles and vesicles) and liquid interfaces
– Colloidal solutions and nanoparticles
– Thermotropic and lyotropic liquid crystals
– Ferrofluids
– Water, aqueous solutions and other hydrogen-bonded liquids
– Lubricants, polymer solutions and melts
– Molten metals and salts
– Phase transitions and critical phenomena in liquids and confined fluids
– Self assembly in complex liquids.– Biomolecules in solution
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– Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.)
– Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.)
– Light scattering (Rayleigh, Brillouin, PCS, etc.)
– Dielectric relaxation
– X-ray and neutron scattering and diffraction.
Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.
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