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Mehtab S, Zaidi MGH, Singh A, Pandey M, Mahra A, Sharma S, Aziz M, Palariya D, Singhal B. Electrochemical monitoring of congo red degradation using strontium titanate-doped biochar nanohybrids derived photocatalytic plates. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28633-3. [PMID: 37468775 DOI: 10.1007/s11356-023-28633-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 07/02/2023] [Indexed: 07/21/2023]
Abstract
Present investigation demonstrates the development and characterization of strontium titanate (SrTiO3) doped biochar nanohybrid photocatalysts. Biochar nanohybrid was synthesized using an ultrasonic-assisted dispersion technique, which involved dispersing SrTiO3 nanoparticles into activated biochar at a weight ratio of 1:2 (w/w) under ambient conditions. The development of the biochar nanohybrid was verified through a comprehensive analysis of their spectral, microstructural, thermal, electrical, and electrochemical properties. The scanning electron microscopy analysis reveals a surface-associated multiphase morphology of the biochar nanohybrid, attributed to the uniform distribution of SrTiO3 within the activated biochar matrix. Biochar nanohybrid exhibited a reduced optical band gap of 2.77 eV, accompanied by a crystallite size of 32.45. Thermogravimetric analysis revealed the thermal stability of the biochar nanohybrid, as evidenced by a char residue of 70.83% at 1000 °C. The working electrodes derived from biochar nanohybrid have exhibited ohmic behavior and displayed a significantly enhanced DC conductivity (mS/cm) of 1.13, surpassing that of activated biochar (0.53) and SrTiO3 (0.62) at 100 V. The developed biochar nanohybrid were employed for the degradation of congo red dye by exposing the dye solution to photocatalytic plates. These photocatalytic plates were prepared by coating biochar nanohybrid onto glass plates using epoxy-based reactive binders for secure binding. The photodegradation of congo red was evaluated through cyclic voltammetric analysis in a 0.1 M KCl solution at pH 8.0, resulting in an impressive 99.95% photocatalytic efficiency in degrading a congo red solution (50 mg/L). This study presents a novel approach for the fabrication of biochar nanohybrid-derived photocatalytic plates, offering high photocatalytic efficiency for the degradation of congo red dye.
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Affiliation(s)
- Sameena Mehtab
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India.
| | - M G H Zaidi
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Ankit Singh
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Minakshi Pandey
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Anjali Mahra
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Shubham Sharma
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Mohammad Aziz
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Diksha Palariya
- Department of Chemistry, College of Basic Sciences and Humanities, G.B. Pant, University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Barkha Singhal
- School of Biotechnology, Gautam Buddha University, Greater Noida, Uttar Pradesh, 201310, India
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Enhanced photocatalytic properties of mesoporous heterostructured SrCO3-SrTiO3 microspheres via effective charge transfer. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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Saravanan G, Ramachandran K, Gajendiran J, Gnanam S. Experimental investigation of structural, surface, optical and electrical properties of gallium sesquioxide doped tausonite compounds. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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