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Wahab A, Minhas MA, Shaikh H, Xiao HM, Malik MI. Enhancement in photocatalytic selectivity of TiO 2-based nano-catalyst through molecular imprinting technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:121929-121947. [PMID: 37957496 DOI: 10.1007/s11356-023-30747-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023]
Abstract
Improvement in the photocatalytic selectivity is imperative for the effective and efficient utilization of catalysts. In this study, a molecularly imprinted polymer-coated iron-doped titanium dioxide (Fe-TiO2@MIP) nanocomposite was successfully synthesized by precipitation polymerization while using RB-19 as a template. The synthesized nanocomposites (Fe-TiO2@MIP and Fe-TiO2@NIP) were characterized by Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM) with energy dispersive X-ray (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer-EMMETT-Teller (BET), and UV-visible spectrophotometry. The optimized binding experiments revealed a high imprinting factor of 5.0 for RB-19. The catalytic degradation efficiency and selectivity of Fe-TiO2@MIP enhanced to almost complete degradation of RB-19 from 70% for the parent Fe-TiO2 and 76% for Fe-TiO2@NIP. An outstanding degradation selectivity of RB-19 was achieved compared to other competitive dyes. Finally, the analysis of the non-degraded and degraded RB-19 by ESI-MS revealed the presence of different intermediates that fits well with the proposed degradation mechanism. The study opens new possibilities of selective photo-degradation of targeted contaminants that may ultimately lead to efficient use of photocatalysts.
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Affiliation(s)
- Abdul Wahab
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan
- Third World Center for Science and Technology, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan
| | - Muhammad Ali Minhas
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan
- Third World Center for Science and Technology, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan
- Food Quality and Safety Research Institute, PARC-Southern Zone Agricultural Research Centre, Karachi, 75270, Pakistan
| | - Huma Shaikh
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Hua-Ming Xiao
- Key Laboratory of Oilseeds Processing of Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Muhammad Imran Malik
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan.
- Third World Center for Science and Technology, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan.
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Kumpanenko IV, Dyubanov MV, Tameeva VV. Treatment of Chemical Industry Wastewater by the Dynamic Adsorption Method. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222030240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kumpanenko IV, Dyubanov MV, Ivanova NA, Novikov VV, Krivenko VI, Roshchin AV. Space-Time Profiles of Contaminants’ Concentrations in the Mobile and Stationary Phases of the Sorption Column. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s199079312106021x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kumpanenko IV, Dyubanov MV, Ivanova NA, Kovaleva NY, Raevskaya EG, Roshchin AV. Dynamic Adsorption of Ammonium Ions from Aqueous Solutions by Strong-Acid Cationities. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2021. [DOI: 10.1134/s1990793120060081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chu KH. Comments on "Breakthrough analysis of continuous fixed-bed adsorption of sevoflurane using activated carbons". CHEMOSPHERE 2020; 247:125841. [PMID: 31932030 DOI: 10.1016/j.chemosphere.2020.125841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
This communication discusses the fixed bed modeling results of the recent paper published by Ang et al. (2020) in this journal.
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Affiliation(s)
- Khim Hoong Chu
- Honeychem, Nanjing Chemical Industry Park, Nanjing, 210047, China.
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Adsorption Processing for the Removal of Toxic Hg(II) from Liquid Effluents: Advances in the 2019 Year. METALS 2020. [DOI: 10.3390/met10030412] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mercury is a toxic metal, thus, it is an element which has more and more restrictions in its uses, but despite the above, the removal of this metal, from whatever the form in which it is encountered (zero valent metal, inorganic, or organic compounds), and from different sources, is of a widespread interest. In the case of Hg(II), or Hg2+, the investigations about the treatment of Hg(II)-bearing liquid effluents (real or in most cases synthetic solutions) appear not to end, and from the various separation technologies, adsorption is the most popular among researchers. In this topic, and in the 2019 year, more than 100 publications had been devoted to this field: Hg(II)-removal-adsorption. This work examined all of them.
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Chu KH, Zhao B. Comment on “Easily Regenerative Carbon/Boehmite Composites with Enhanced Cyclic Adsorption Performance towards Methylene Blue in Batch and Continuous Aqueous Systems” and “Highly Enhanced Adsorption of Dimethyl Disulfide from Model Oil on MOF-199/Attapulgite Composites”. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b04767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Khim Hoong Chu
- Honeychem, Nanjing Chemical Industry Park, Nanjing 210047, China
| | - Bin Zhao
- Honeychem, Nanjing Chemical Industry Park, Nanjing 210047, China
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Kumpanenko IV, Ivanova NA, Dyubanov MV, Skryl’nikov AM, Kovaleva NY, Roshchin AV. Removal of Mercury(II) from Aqueous Solutions via Dynamic Column Adsorption. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2019. [DOI: 10.1134/s1990793119030199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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