1
|
Cheng CY, Shen YM, Huang WH, Chang CC, Tsai CC, Lin CJ, Lin YG, Lu YR, Dong CL, Su WN, Chen SY, Kumar K, Chen HY, Tsai CJ, Chen CL. Electronic and Atomic Structural Properties Associated with Enhanced Photodegradation Activity in Mo-Doped TiO 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:19506-19516. [PMID: 39205649 DOI: 10.1021/acs.langmuir.4c01946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
The efficacy and structural evolution of Mo-doped titania nanoparticles (MTNPs) as advanced photocatalysts for degrading methyl blue (MB) are investigated by X-ray absorption spectroscopy (XAS). The 3 wt % MTNP, characterized by uniform size and anatase structure, exhibits higher efficiency. The spectral analyses unveiled structural variations in the TiO6 octahedral structure and revealed an active site of the distorted square pyramidal structure symmetry (C4v). The in situ XAS spectra illustrate that MTNPs, particularly at 3 wt % doping, effectively enhanced the hole carriers in Ti 3d orbitals with a charge transfer to Mo 4d orbitals and impeded electron-hole pair merging, significantly enhancing the photodegradation under light illumination. This study deepens our understanding of the crucial role of Mo doping in optimizing TiO2 nanoparticle performance for efficient environmental remediation, showcasing the potential of MTNPs as sustainable photocatalytic materials.
Collapse
Affiliation(s)
- Chiao-Yu Cheng
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Yu-Min Shen
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Wei-Hsiang Huang
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chun-Chi Chang
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Chang-Chih Tsai
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chin-Jung Lin
- Graduate Institute of Environmental Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Yan-Gu Lin
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Ying-Rui Lu
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chung-Li Dong
- Department of Physics, Tamkang University, New Taipei City 251301, Taiwan
| | - Wei-Nien Su
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Shih-Yun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Krishna Kumar
- Department of General Studies, Physics Division, Jubail Industrial College (JIC), Jubail Industrial City 31961, Saudi Arabia
| | - Han-Yi Chen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Cho-Jen Tsai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chi-Liang Chen
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| |
Collapse
|
2
|
Milošević K, Lončarević D, Kalagasidis Krušić M, Hadnađev-Kostić M, Dostanić J. Eco-Friendly g-C 3N 4/Carboxymethyl Cellulose/Alginate Composite Hydrogels for Simultaneous Photocatalytic Degradation of Organic Dye Pollutants. Int J Mol Sci 2024; 25:7896. [PMID: 39063138 PMCID: PMC11277058 DOI: 10.3390/ijms25147896] [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: 06/19/2024] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
The presented study was focused on the simple, eco-friendly synthesis of composite hydrogels of crosslinked carboxymethyl cellulose (CMC)/alginate (SA) with encapsulated g-C3N4 nanoparticles. The structural, textural, morphological, optical, and mechanical properties were determined using different methods. The encapsulation of g-C3N4 into CMC/SA copolymer resulted in the formation of composite hydrogels with a coherent structure, enhanced porosity, excellent photostability, and good adhesion. The ability of composite hydrogels to eliminate structurally different dyes with the same or opposite charge properties (cationic Methylene Blue and anionic Orange G and Remazol Brilliant Blue R) in both single- and binary-dye systems was examined through adsorption and photocatalytic reactions. The interactions between the dyes and g-C3N4 and the negatively charged CMC/SA copolymers had a notable influence on both the adsorption capacity and photodegradation efficiency of the prepared composites. Scavenger studies and leaching tests were conducted to gain insights into the primary reactive species and to assess the stability and long-term performance of the g-C3N4/CMC/SA beads. The commendable photocatalytic activity and excellent recyclability, coupled with the elimination of costly catalyst separation requirements, render the g-C3N4/CMC/SA composite hydrogels cost-effective and environmentally friendly materials, and strongly support their selection for tackling environmental pollution issues.
Collapse
Affiliation(s)
- Ksenija Milošević
- Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, National Institute of Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia; (D.L.); (J.D.)
| | - Davor Lončarević
- Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, National Institute of Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia; (D.L.); (J.D.)
| | - Melina Kalagasidis Krušić
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia;
| | - Milica Hadnađev-Kostić
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21102 Novi Sad, Serbia;
| | - Jasmina Dostanić
- Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, National Institute of Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia; (D.L.); (J.D.)
| |
Collapse
|
3
|
Pasupathi S, Syed Abdul Rahman S, Karuppiah S. Removal of cationic and anionic toxic pollutants from simulated solutions using Sterculia foetida pod (SFP): equilibrium isotherm, kinetics, and characterization. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 25:1913-1931. [PMID: 37165520 DOI: 10.1080/15226514.2023.2208230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The present work explores the sorption performance of Sterculia foetida pod (SFP) for the removal of methylene blue (MB) and chromium (Cr6+) from simulated solutions separately. The material characteristics namely textural analysis (specific surface area: 2.45 m2/g), morphological behavior (heterogeneous morphology containing pores and cavities), functional analysis (COO- stretching, C-O-C stretching vibrations, and -OH stretching) and thermal behavior (279.4 °C) were examined by various analytical techniques namely BET, SEM, FTIR, and TGA. Using non-linear Langmuir isotherm analysis, the maximal sorption capacity of SFP for the removal of MB and Cr6+ was predicted to be 74.1 mg/g and 27.3 mg/g, respectively. The optimized condition for sorption of MB and Cr6+ onto SFP was: dosage: 0.07 mg/L, initial pH: 7 (MB), and 2 (Cr6+). Thermodynamic data analysis confirmed the endothermic, favorable, spontaneous, and physisorption nature of sorption. The SFP has shown significant regeneration capacity in the consecutive runs (MB: 92.5% removal till 5th trial; Cr6+: 97.6% removal till 3rd trial). Based on these findings, SFP is a promising low-cost and eco-friendly candidate for the removal of anionic and cationic toxic pollutants in the absence of energy and chemical expenditure.NOVELTY STATEMENTSterculia foetida pod (SFP) explored for the removal of anionic and cationic toxic pollutants in the absence of energy and chemical expenditure.Mechanism for the interaction between toxic pollutants and SFP was predicted.Better sorption capacity (MB: 74.1 mg/g; Cr6+: 27.8 mg/g) and better regeneration capacity (MB: 92.5% for 5th trial; Cr6+: 97.6% for 3rd trial) was achieved.A feasible and spontaneous nature of sorption process toward the removal of MB and Cr6+ was demonstrated using thermodynamic relations.
Collapse
Affiliation(s)
- Saroja Pasupathi
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Sameeha Syed Abdul Rahman
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Sugumaran Karuppiah
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| |
Collapse
|
4
|
Preparation and Performance Evaluation of BiOI Photocatalytic Film. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139926] [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]
|
5
|
Balakrishnan A, Chinthala M. Comprehensive review on advanced reusability of g-C 3N 4 based photocatalysts for the removal of organic pollutants. CHEMOSPHERE 2022; 297:134190. [PMID: 35248593 DOI: 10.1016/j.chemosphere.2022.134190] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 05/19/2023]
Abstract
Graphitic carbon nitride (g-C3N4) has attained significant research attention in energy and environmental remediation due to its excellent electronic structure, greater physical and chemical properties, and abundance. However, graphitic carbon nitride faces severe problems because of its high recombination rate and higher mass loss of the catalyst during recovery operations. This review emphasizes the methods to overcome the difficulties associated with recovery and reusability of the g-C3N4 based photocatalyst towards the redemption of pollutants present in wastewater. Different strategies like magnetic g-C3N4 based photocatalysts, immobilized photocatalytic systems, and photocatalytic membranes and their usage in photocatalytic applications are well described. Different preparation strategies of the graphic carbon nitride-based composites are elucidated. The key challenges and future perspectives of adopting these methods for photocatalytic applications are also mentioned.
Collapse
Affiliation(s)
- Akash Balakrishnan
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India
| | - Mahendra Chinthala
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India.
| |
Collapse
|
6
|
Oseghe EO, Akpotu SO, Mombeshora ET, Oladipo AO, Ombaka LM, Maria BB, Idris AO, Mamba G, Ndlwana L, Ayanda OS, Ofomaja AE, Nyamori VO, Feleni U, Nkambule TT, Msagati TA, Mamba BB, Bahnemann DW. Multi-dimensional applications of graphitic carbon nitride nanomaterials – A review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117820] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
7
|
Baig U, Faizan M, Sajid M. Semiconducting graphitic carbon nitride integrated membranes for sustainable production of clean water: A review. CHEMOSPHERE 2021; 282:130898. [PMID: 34098310 DOI: 10.1016/j.chemosphere.2021.130898] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/09/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
Semiconducting membranes integrated with nanomaterials have placed themselves in new emerging researches tremendously for seawater desalination, oil-water separation, disinfection, removal of inorganic as well as organic pollutants. Howbeit, only nanoparticles unified membranes show quite a lot lags in their performance, although some of these particles associated with the demerits of high cost. In contrast, graphitic carbon nitride incorporated membranes offered improved aforementioned properties corresponding to absolute essential qualities such as cost-effective, environmentally friendly, easy-to-operate, green manufacturing, anti-fouling, and low energy consumption. Moreover, their high mechanical strength, high stability against harsh environment and long-term utilization without flux reduction are strong plus. Even though there are some undeniable downsides of these membranes in real world applications as bulk synthesis, consistent dispersion of graphitic carbon nitride, low photocatalytic efficiency etc. Accordingly, in the present article, these frailties of the membranes having graphitic carbon nitride as a filler and their respective synthesis procedures and properties are discussed. A comprehensive analysis over the application of semiconducting graphitic carbon nitride incorporated membranes with and without special surface modification; and exploration of the future challenges and difficulties associated to these membranes are also reviewed. Consequently, the current article provides brief overview about graphitic carbon nitride integrated composite membranes as well as their applications, and it finished up with new thoughts of further improvements/modifications to overcome their shortcomings in actual environmental conditions.
Collapse
Affiliation(s)
- Umair Baig
- Interdisciplinary Research Center for Membranes & Water Security, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia; Center for Research Excellence in Desalination & Water Treatment, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
| | - M Faizan
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Mohd Sajid
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| |
Collapse
|
8
|
BIND (II), characterization of die wall surface modifications for good manufacturing using the surface replication method. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
9
|
Lu N, Sun M, Wei X, Zhang P, Zhang Z. Facile Synthesis of Lacunary Keggin-Type Phosphotungstates-Decorated g-C 3N 4 Nanosheets for Enhancing Photocatalytic H 2 Generation. Polymers (Basel) 2020; 12:E1961. [PMID: 32872550 PMCID: PMC7564915 DOI: 10.3390/polym12091961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/21/2020] [Accepted: 08/25/2020] [Indexed: 02/07/2023] Open
Abstract
In this work, the lacunary Keggin-type phosphotungstates of [PW9O34]9- (PW9) clusters were loaded onto the g-C3N4 nanosheets (NSs) to synthesize the phosphotungstate clusters-decorated 2D heterojunction photocatalysts by using the electrostatic-force driven self-assembly process. The surface charge polarity of g-C3N4 NSs was changed from a negative to a positive charge through the acidizing treatment. The positively-charged g-C3N4 NSs allowed the negatively-charged PW9 clusters to be adsorbed and deposited onto the g-C3N4 NSs, forming the PW9/g-C3N4 heterojunction NSs. The as-synthesized samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and UV-VIS absorption spectra, respectively. The photocatalytic activity tests indicated that, upon simulated sunlight irradiation, the photocatalytic H2-generation rate of PW9/g-C3N4 heterojunction NSs (~23.8 μmol h-1) was ~3.3 times higher than that of the pure g-C3N4 NSs (~7.3 μmol h-1). The enhanced photocatalytic activity of PW9 cluster-decorated g-C3N4 NSs could be attributed to the enhanced separation process of the photoinduced charge-carriers, due to the Z-scheme-mediate charge transfer behavior across their hetero-interface.
Collapse
Affiliation(s)
- Na Lu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian 116600, China; (N.L.); (M.S.)
| | - Menghan Sun
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian 116600, China; (N.L.); (M.S.)
| | - Xiaoming Wei
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian 116600, China; (N.L.); (M.S.)
| | - Peng Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;
| | - Zhenyi Zhang
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian 116600, China; (N.L.); (M.S.)
| |
Collapse
|