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Shi H, Wang H, Zhang E, Qu X, Li J, Zhao S, Gao H, Chen Z. Boosted Photocatalytic Performance for Antibiotics Removal with Ag/PW 12/TiO 2 Composite: Degradation Pathways and Toxicity Assessment. Molecules 2023; 28:6831. [PMID: 37836674 PMCID: PMC10574183 DOI: 10.3390/molecules28196831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Photocatalyst is the core of photocatalysis and directly determines photocatalytic performance. However, low quantum efficiency and low utilization of solar energy are important technical problems in the application of photocatalysis. In this work, a series of polyoxometalates (POMs) [H3PW12O40] (PW12)-doped titanium dioxide (TiO2) nanofibers modified with various amount of silver (Ag) nanoparticles (NPs) were prepared by utilizing electrospinning/photoreduction strategy, and were labelled as x wt% Ag/PW12/TiO2 (abbr. x% Ag/PT, x = 5, 10, and 15, respectively). The as-prepared materials were characterized with a series of techniques and exhibited remarkable catalytic activities for visible-light degradation tetracycline (TC), enrofloxacin (ENR), and methyl orange (MO). Particularly, the 10% Ag/PT catalyst with a specific surface area of 155.09 m2/g and an average aperture of 4.61 nm possessed the optimal photodegradation performance, with efficiencies reaching 78.19% for TC, 93.65% for ENR, and 99.29% for MO, which were significantly higher than those of PW12-free Ag/TiO2 and PT nanofibers. Additionally, various parameters (the pH of the solution, catalyst usage, and TC concentration) influencing the degradation process were investigated in detail. The optimal conditions are as follows: catalyst usage: 20 mg; TC: 20 mL of 20 ppm; pH = 7. Furthermore, the photodegradation intermediates and pathways were demonstrated by HPLC-MS measurement. We also investigated the toxicity of products generated during TC removal by employing quantitative structure-activity relationship (QSAR) prediction through a toxicity estimation software tool (T.E.S.T. Version 5.1.2.). The mechanism study showed that the doping of PW12 and the modification of Ag NPs on TiO2 broadened the visible-light absorption, accelerating the effective separation of photogenerated carriers, therefore resulting in an enhanced photocatalytic performance. The research provided some new thoughts for exploiting efficient and durable photocatalysts for environmental remediation.
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Affiliation(s)
- Hongfei Shi
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Haoshen Wang
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Enji Zhang
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Xiaoshu Qu
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Jianping Li
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Sisi Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry & Chemical Engineering, Shenyang Normal University, Shenyang 110034, China;
| | - Huajing Gao
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
| | - Zhe Chen
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin City 132022, China; (H.W.); (E.Z.); (X.Q.); (H.G.); (Z.C.)
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Patra R, Dash P, Panda PK, Yang PC. A Breakthrough in Photocatalytic Wastewater Treatment: The Incredible Potential of g-C 3N 4/Titanate Perovskite-Based Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2173. [PMID: 37570490 PMCID: PMC10421126 DOI: 10.3390/nano13152173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 08/13/2023]
Abstract
Water pollution has emerged as a major global environmental crisis due to the massive contamination of water resources by the textile dyeing industry, organic waste, and agricultural residue. Since water is fundamental to life, this grave disregard puts lives at risk, making the protection of water resources a serious issue today. Recent research has shown great interest in improving the photocatalytic performance of graphitic carbon nitride (g-C3N4) for wastewater treatment. However, the photocatalytic removal activity of pure g-C3N4 is poor, owing to its minimal surface area, fast recombination of photo-generated electron-hole pairs, and poor light absorption. Recently, titanate perovskites (TNPs) have attracted significant attention in both environmental remediation and energy conversion due to their exceptional structural, optical, physiochemical, electrical, and thermal properties. Accordingly, TNPs can initiate a variety of surface catalytic reactions and are regarded as an emerging category of photocatalysts for sustainability and energy-related industries when exposed to illumination. Therefore, in this review article, we critically discuss the recent developments of extensively developed g-C3N4/TNPs that demonstrate photocatalytic applications for wastewater treatment. The different synthetic approaches and the chemical composition of g-C3N4/TNP composites are presented. Additionally, this review highlights the global research trends related to these materials. Furthermore, this review provides insight into the various photocatalytic mechanisms, including their potential impact and significance. Also, the challenges faced by such materials and their future scope are discussed.
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Affiliation(s)
- Rashmiranjan Patra
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
| | - Pranjyan Dash
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 10608, Taiwan;
| | - Pradeep Kumar Panda
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
| | - Po-Chih Yang
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
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Jiang W, Li J, Jiang Y, Zhou S, Liu B, Zhou T, Liu C, Che G. A 3D porphyrinic metal-organic framework with fsc topology for efficient visible-light-driven photocatalytic degradation. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Construction of Z-scheme Cs3PMo12O40/g-C3N4 composite photocatalyst with highly efficient photocatalytic performance under visible light irradiation. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Hollow Nanospheres Organized by Ultra-Small CuFe2O4/C Subunits with Efficient Photo-Fenton-like Performance for Antibiotic Degradation and Cr(VI) Reduction. Catalysts 2022. [DOI: 10.3390/catal12070687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Hollow transition metal oxides have important applications in the degradation of organic pollutants by a photo-Fenton-like process. Herein, uniform, highly dispersible hollow CuFe2O4/C nanospheres (denoted as CFO/C-PNSs) were prepared by a one-pot approach. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images verified that the CFO/C-PNS catalyst mainly presents hollow nanosphere morphology with a diameter of 250 ± 30 nm. Surprisingly, the photodegradation test results revealed that CFO/C-PNSs had an excellent photocatalytic performance in the elimination of various organic contaminants under visible light through the efficient Fenton catalytic process. Due to the unique hollow structure formed by the assembly of ultra-small CFO/C subunits, the catalyst exposes more reaction sites, improving its photocatalytic activity. More importantly, the resulting magnetically separable CFO/C-PNSs exhibited excellent stability. Finally, the possible photocatalytic reaction mechanism of the CFO/C-PNSs was proposed, which enables us to have a clearer understanding of the photo-Fenton mechanism. Through a series of characterization and analysis of degradation behavior of CFO/C-PNS samples over antibiotic degradation and Cr(VI) reduction, •OH radicals generated from H2O2 decomposition played an essential role in enhancing the reaction efficiency. The present work offered a convenient method to fabricate hollow transition metal oxides, which provided impetus for further development in environmental and energy applications. Highlights: Novel hollow CuFe2O4/C nanospheres were prepared by a facile and cost-effective method. CuFe2O4/C exhibited excellent photo-Fenton-like performance for antibiotic degradation. Outstanding photocatalytic performance was attributed to the specific hollow cavity-porous structure. A possible mechanism for H2O2 activation over hollow CuFe2O4/C nanospheres was detailed and discussed.
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Ge T, Shen L, Li J, Zhang Y, Zhang Y. Morphology-controlled hydrothermal synthesis and photocatalytic Cr(VI) reduction properties of α-Fe2O3. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128069] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Cheng T, Gao H, Liu G, Pu Z, Wang S, Yi Z, Wu X, Yang H. Preparation of core-shell heterojunction photocatalysts by coating CdS nanoparticles onto Bi4Ti3O12 hierarchical microspheres and their photocatalytic removal of organic pollutants and Cr(VI) ions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127918] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Djellabi R, Zhao X, Ordonez MF, Falletta E, Bianchi CL. Comparison of the photoactivity of several semiconductor oxides in floating aerogel and suspension systems towards the reduction of Cr(VI) under visible light. CHEMOSPHERE 2021; 281:130839. [PMID: 34000659 DOI: 10.1016/j.chemosphere.2021.130839] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/08/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
A massive amount of research has been done over the last three decades to develop photoactive materials which could be suitable for real-world use in water remediation sector. Water-floating photocatalysts could be one of the best options due to their technological characteristics in terms of efficiency and reasonability including a high oxygenation of the photocatalyst surface, a fully sunlight irradiation, easy recovery and reuse. In the present study, aerogel water-floating based materials were fabricated using poly(vinyl alcohol) and polyvinylidene fluoride as a polymer platform, and loaded with different semiconductors such as g-C3N4, MoO3, Bi2O3, Fe2O3 or WO3. The photocatalytic efficiencies of aerogel floating materials and the suspension of above-mentioned semiconductors were compared evaluating the photoreduction of Cr(VI) under visible light (λ > 420 nm). The results showed that Fe2O3 suspension was the most efficient but the slowest in floating system. On the contrary, g-C3N4 exhibited a good performance in suspension system, and on top of that it was very effective in floating system, wherein it ensures a total reduction of 10 ppm-Cr(VI) to Cr(III) within 20 min.
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Affiliation(s)
- Ridha Djellabi
- Università Degli Studi di Milano, Dip. Chimica and INSTM-UdR Milano, Via Golgi, 19, 20133, Milano, Italy.
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Marcela Frias Ordonez
- Università Degli Studi di Milano, Dip. Chimica and INSTM-UdR Milano, Via Golgi, 19, 20133, Milano, Italy
| | - Ermelinda Falletta
- Università Degli Studi di Milano, Dip. Chimica and INSTM-UdR Milano, Via Golgi, 19, 20133, Milano, Italy
| | - Claudia L Bianchi
- Università Degli Studi di Milano, Dip. Chimica and INSTM-UdR Milano, Via Golgi, 19, 20133, Milano, Italy
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