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Nitika, Arora S, Ahlawat DS. Mechanical strain effect on the optoelectronic properties and photocatalysis applications of layered AlN/GaN nanoheterostructure. J Mol Model 2024; 30:309. [PMID: 39138708 DOI: 10.1007/s00894-024-06103-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 08/05/2024] [Indexed: 08/15/2024]
Abstract
CONTEXT The aim of this work is to use first principles calculations to examine the effects of different mechanical strains on the optoelectronic and photocatalytic capabilities of the 2D/2D nanoheterostructure of AlN/GaN. By utilizing the lmBJ (Meta-GGA) and PBEsol (GGA) functional, the bandgap of the nanoheterostructure is calculated and found to be 4.89 eV and 3.24 eV. Simulated 2D AlN/GaN nanoheterostructure exhibits exceptional optical and electronic characteristics under applied biaxial tensile and compressive strains. The band gap changes from 4.89 to 3.77 eV, while the energy gap nature transitions from direct to indirect during tensile strain fluctuations of 0% to 8%. Strain is also found to have a significant effect on the optical absorption peaks. And a 0-8% rise in tensile strain causes the initial absorption peak of the 2D AlN/GaN nanoheterostructure to shift from 4.88 to 4.20 eV, which results in a 14% red shift in photon energy for every 2% change in strain. Furthermore, the optimum bandgap and band edge positions of the 2D AlN/GaN nanoheterostructure enable the water redox process to produce hydrogen and oxygen for wide range of pH. Thus, modification via strain may be an effective method for altering the optical as well as electronic characteristics of a 2D AlN/GaN nanoheterostructure, and this study may pave the way for new applications of this material in optoelectronic devices in the future. METHODS In the current work, density functional theory is used to explore every attribute of the 2D AlN/GaN nanoheterostructure. To characterize the electronic exchange-correlation, we used the PBEsol functional. In order to prevent any interlayer contact between periodicity of images, a vacuum is produced along the z-direction of approximately 10 Å. To increase the precision of bandgap prediction, the electronic and optical characteristics were computed using the meta-GGA lmBJ functional. To account for interlayer van der Waals interactions, nanoheterostructure computations were performed using the DFT-D3 functional.
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Affiliation(s)
- Nitika
- Department of Physics, Chaudhary Devi Lal University, Sirsa, 125055, (Hry.), India
| | - Sandeep Arora
- Department of Physics, Chaudhary Devi Lal University, Sirsa, 125055, (Hry.), India
- Govt. Model Skt. Sen. Sec. School, Rania, 125076, Sirsa, India
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Kim CM, Chowdhury MF, Im HR, Cho K, Jang A. NiAlFe LTH /MoS 2 p-n junction heterostructure composite as an effective visible-light-driven photocatalyst for enhanced degradation of organic dye under high alkaline conditions. CHEMOSPHERE 2024; 358:142094. [PMID: 38648984 DOI: 10.1016/j.chemosphere.2024.142094] [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: 01/27/2024] [Revised: 04/08/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Designing of an effectual heterostructure photocatalyst for catalytic organic pollutant exclusion has been the subject of rigorous research intended to resolve the related environmental aggravation. Fabricating p-n junctions is an effective strategy to promote electron-hole separation of semiconductor photocatalysts as well as enhance the organic toxin degradation performance. In this study, a series of n-type NiAlFe-layered triple hydroxide (LTH) loaded with various ratios of p-type MoS2 was synthesized for forming a heterostructure LTH/MoS2 (LMs) by an in situ hydrothermal strategy. The photocatalysts were characterized by XRD, SEM&EDX, TEM, FT-IR, XPS, as well as UV-vis DRS. The photoactivity of photocatalysts was tested by the degradation of Indigo Carmine (IC) dye. The optimized catalyst (LM1) degrades 100% of indigo dye in high alkaline pH under UV light for 100 min. Besides, the degradation rate of LM1 is 15 times higher than that of pristine NiAlFe-LTH. The enhanced photoactivity is attributed to the synergistic effect between NiAlFe-LTH and MoS2 as well as the p-n junction formation.
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Affiliation(s)
- Chang-Min Kim
- Future and Fusion Lab of Architectural, Civil and Environmental Engineering, Korea University, Seoul 02841, Republic of Korea; Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Mir Ferdous Chowdhury
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Hong Rae Im
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Kyunghwa Cho
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Am Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
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Nitika, Ahlawat DS, Arora S. Meta-GGA study of 2D AlN/BN planer heterostructure and performance enhancement via strain engineering. J Mol Model 2024; 30:144. [PMID: 38653800 DOI: 10.1007/s00894-024-05948-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
CONTEXT The 2D AlN/BN planer heterostructure is a promising wide band gap semiconductor, but systematic studies of its bandgap and optical characteristics under applied strain are scarce. Here, the engineering property of 2D AlN/BN comprising bandgap nature transition and optical absorption capability (from unstrained to strained) have been investigated using density functional theory calculations. The formation energy calculations confirm the stability of the simulated nanoheterostructure. The electronic band structure calculations demonstrate that nanoheterostructure is an indirect bandgap material with a large bandgap of 5.26 eV, which can be modified effectively by applying strain. According to the calculations, the transition from indirect to direct band gap behavior has been observed at +15% biaxial strain with 2.71 eV band gap energy. Meanwhile, calculations for optical absorption and dielectric function reveal that the system has significant absorption peaks in the ultraviolet region which are very sensitive to applied strain. As strain increases, the first absorption peaks are shifted towards a lower energy range from 5.73 eV (Ꜫ= 0 %) to 3.76 eV (Ꜫ = +15%), which features an enhancement of optical absorption for solar and solar-blind regions. Furthermore, we determined that the band edge positions in 2D AlN/BN straddled the water redox potential under strain, indicating its effectiveness as a proficient photocatalyst. These characteristics make 2D AlN/BN planer nanoheterostructure a promising candidate for applications in optoelectronics and photocatalytic water splitting performance. METHODS First principles computations based on density functional theory were employed to carry out all the calculations with a self-consistent approach. For solving the Kohn-Sham equations, the first principles dependent full-potential linearized augmented plane wave scheme were adopted. For addressing the exchange-correlation effects, the generalized gradient approximation of PBEsol functional was used. To prevent interaction between the periodic images, we have inserted a vacuum region of 10 Å in the z-direction. Non-negligible weak dispersion corrections in nanoheterostructure were considered by using the DFT-D3 method of Grimme's. The locally modified Becke-Johnson (lmBJ) exchange potential has also been applied to compute electronic and optical properties in this research to obtain more accurate information.
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Affiliation(s)
- Nitika
- Department of Physics, Chaudhary Devi Lal University, Sirsa, 125055(Hry.), India
| | | | - Sandeep Arora
- Department of Physics, Chaudhary Devi Lal University, Sirsa, 125055(Hry.), India
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Nitika, Ahlawat DS, Arora S. Ab-initio study of strain-tunable g-GaN/BN nanoheterostructure for optoelectronic and photocatalytic applications. J Mol Model 2024; 30:128. [PMID: 38598043 DOI: 10.1007/s00894-024-05927-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/04/2024] [Indexed: 04/11/2024]
Abstract
CONTEXT Two-dimensional (2D) nanoheterostructures of materials, integrating various phase or materials into a single nanosheet have stimulated large-scale research interest for designing novel two dimensional devices. In contemporary analysis present work, we examined the structural and electronic properties of the isolated 2D BN and GaN monolayers. We have investigated the structural stability and optoelectronic and photocatalytic response of the g-GaN/BN nanoheterostructure along with its response to strain. Nanoheterostructure g-GaN/BN is predicted to be a direct bandgap semiconductor with wide gap of 4.45 eV, whose value can be effectively modulated by applied strain ( ϵ ) , ranging from 4.55 ( ϵ = - 4%) to 3.58 eV ( ϵ = 8%). We also discovered that the tensile strain of 8% can substantially tune the direct bandgap of nanoheterostructure to indirect band gap nature. Even more important, the biaxial tensile strain engineering accentuates an enhancement of optical absorption in the UV region, broadening the light harvesting of the g-GaN/BN nanoheterostructure with the shifting of first absorption peak from 4.64 ( ϵ = - 4%) to 3.71 eV ( ϵ = 8%). Furthermore, strain-tuned band edge potentials arrangement perfectly fits the water reduction and oxidation redox potentials. Our findings portend that the g-GaN/BN nanoheterostructure has application in prospective nanoscale optoelectronic devices and photocatalytic hydrogen evolution system. METHODS First principles calculations in this study are performed using density functional theory. Generalized gradient approximation within PBEsol functional employed to address the electron-electron exchange-correlation effects. For avoiding periodic interactions between the layers, we have inserted a vacuum region of thickness 10 Å in the z-direction. For ensuring the convergence accuracy of the computed results, convergence criteria of the iteration process is set to be 0.0001 eV. Local modified Becke-Johnson, a semi local functional, is applied for calculating electronic and optical properties for more accuracy of results. As in layered 2D nanoheterostructure, a factual depiction of the van der Waals interactions cannot be provided by conventional DFT techniques. Accordingly, in order to incorporate these interactions, we had employed the dispersion correction method of Grimme's.
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Affiliation(s)
- Nitika
- Department of Physics, Chaudhary Devi Lal University, Sirsa-125055 (Hry.), India
| | | | - Sandeep Arora
- Department of Physics, Chaudhary Devi Lal University, Sirsa-125055 (Hry.), India
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Sarkodie B, Luo L, Mao Z, Farooq A, Feng Q, Xu C, Tawiah B, Hu Y. Highly reusable Bi 2O 3/electron-Cu-shuttle in-situ immobilized polyacrylonitrile fibrous mat for efficient photocatalytic degradation of methylene blue and rhodamine B dyes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120346. [PMID: 38387350 DOI: 10.1016/j.jenvman.2024.120346] [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: 10/09/2023] [Revised: 01/22/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
Organic semiconductor-based photocatalysts have been alluring due to their edge over inorganic photocatalysts. In this study, a reusable copper-bismuth oxide/polyacrylonitrile (Cu-Bi2O3/PAN) fibrous mat was prepared by fast-process flame spray pyrolysis and electrospinning for photocatalytic degradation of methylene blue (MB) and rhodamine B (RhB) dyes. The results confirmed a well-defined morphology of Cu-Bi2O3/PAN fibers and good coordination of flame-made Cu-Bi2O3 particles with the functional groups of PAN. The Cu-Bi2O3/PAN fibrous mat exhibits remarkable photocatalytic performance of 96.2% MB and 98.6% RhB degradation, with a reaction rate as high as about 4.5- and 10.2-times than that of flame-made Cu-Bi2O3 particles and PAN under neutral condition, even after 10 cycles. The Cu-Bi2O3/PAN exhibits complete degradation of MB and RhB in 90 and 150 min under alkaline and slightly acidic conditions, respectively. The synergistic effect of Cu-Bi2O3 and coordination bond between particles and functional groups of PAN promoted carrier migration, suppressed recombination of carriers and provided abundant radicals on the surface of the mat. Superoxide and hydroxyl radicals were the major active species involved in the degradation of RhB and MB, respectively. This work provides an insight into designing the Cu-metal-shuttle based photocatalysts to optimize fibrous mat application in water remediation.
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Affiliation(s)
- Bismark Sarkodie
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China; School of Textile and Clothing, Qingdao University, Qingdao, China.
| | - Lingli Luo
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Ze Mao
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China
| | - Amjad Farooq
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China
| | - Quan Feng
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China.
| | - Changhai Xu
- School of Textile and Clothing, Qingdao University, Qingdao, China
| | - Benjamin Tawiah
- Department of Industrial Art (Textiles), Kwame Nkrumah University of Science and Technology, Private Mail Bag, Kumasi, Ghana
| | - Yanjie Hu
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.
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Punyasamudram S, Puthalapattu RP, Bathinapatla A, Mulpuri R, Kanchi S, Kumar PVN. Multifunctional characteristics of biosynthesized CoFe 2O 4@Ag nanocomposite by photocatalytic, antibacterial and cytotoxic applications. CHEMOSPHERE 2024; 349:140892. [PMID: 38070614 DOI: 10.1016/j.chemosphere.2023.140892] [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: 06/17/2023] [Revised: 09/12/2023] [Accepted: 12/02/2023] [Indexed: 01/10/2024]
Abstract
Carissa carandas, a traditional medicinal herb with a high concentration of antioxidant phytochemicals, has been used for thousands of years in the Ayurveda, Unani, and homoeopathic schools of medicine. By employing Carissa carandas bark extract as a reducing and capping agent in green biosynthesis, we extend this conventional application to produce CoFe2O4 and CoFe2O4@Ag nanocomposite. A variety of techniques have been used to characterize the synthesised nanocomposite, including UV-Vis, FTIR, XRD, FESEM, EDX, and BET. The CoFe2O4 and CoFe2O4@Ag nanocomposite demonstrated promising antibacterial action against human bacterial pathogens like B. subtilis and S. aureus as gram positive and P. aeruginosa and E. coli as gram negative with inhibition zones of 24.3 ± 0.57, 17.4 ± 0.75 and 20.5 ± 0.5, 19.8 ± 1.6 mm respectively, and the obtained results were superior to the nanocomposite without silver. Moreover, in-vitro cytotoxicity effects of biosynthesized CoFe2O4 and CoFe2O4@Ag were performed on the human breast cancer cell MCF-7. It was found that the MCF-7 cells' 50% inhibitory concentration (IC50) was 60 μg/mL. Additionally, biosynthesized CoFe2O4 and CoFe2O4@Ag nanocomposite was used to demonstrate the photocatalytic eradication of Rhodamine Blue (RhB). Due to the addition of Ag, which increases surface area, conductivity, and increased charge carrier separation, the CoFe2O4@Ag nanocomposite exhibits a high percentage of photocatalytic degradation of ⁓ 98% within 35 min under UV light irradiation. The photocatalytic performance of as-synthesised nanocomposite was evaluated using dye degradation-adsorption in both natural light and dark condition. Under dark conditions, it was found that 2 mg mL-1 CoFe2O4@Ag in RhB aqueous solution (5 ppm) causes dye adsorption in 30 min with an effectiveness of 72%. Consequently, it is anticipated that the CoFe2O4@Ag nanocomposite will be a promising photocatalyst and possibly a noble material for environmental remediation applications.
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Affiliation(s)
- Sandhya Punyasamudram
- Department of Chemistry, GITAM University, Hyderabad, 502329, Telangana, India; Department of Chemistry, Sri Padmavati Mahila Visvavidyalayam, Tirupati, 517502, Andhra Pradesh, India
| | - Reddy Prasad Puthalapattu
- Department of Chemistry, Institute of Aeronautical Engineering, Hyderabad, 500043, Telangana, India.
| | - Ayyappa Bathinapatla
- Department of Chemistry, CMR Institute of Technology, Bengaluru, 560037, India; Centre of Excellence- Sensors & Nanoelectronics, CMR Institute of Technology, Bengaluru, 560037, India
| | - Ravikumar Mulpuri
- Department of Chemistry, Raghu Engineering College (Autonomous), Dakamarri (v), Bheeminipatnam, Visakhapatnam, 531162, Andhra Pradesh, India
| | - Suvardhan Kanchi
- Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560 029, India.
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Nazir A, Imran M, Kanwal F, Latif S, Javaid A, Kim TH, Boczkaj G, Shami A, Iqbal H. Degradation of cefadroxil drug by newly designed solar light responsive alcoholic template-based lanthanum ferrite nanoparticles. ENVIRONMENTAL RESEARCH 2023; 231:116241. [PMID: 37244493 DOI: 10.1016/j.envres.2023.116241] [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: 12/19/2022] [Revised: 05/02/2023] [Accepted: 05/24/2023] [Indexed: 05/29/2023]
Abstract
In this work, lanthanum ferrite nanoparticles were synthesized via a simple co-precipitation method. Two different templates, namely sorbitol and mannitol, were used in this synthesis to tune the optical, structural, morphological, and photocatalytic properties of lanthanum ferrite. The synthesized lanthanum ferrite-sorbitol (LFOCo-So) and lanthanum ferrite-mannitol (LFOCo-Mo) were investigated through Ultraviolet-Visible (UV-Vis), X-ray diffraction (XRD), Fourier Transform Infra-Red (FTIR), Raman, Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX), and photoluminescence (PL) techniques to study the effects of the templates on the tunable properties of lanthanum ferrite nanoparticles. The UV-Vis study revealed a remarkably small bandgap (2.09 eV) of LFOCo-So compared to the LFOCo-Mo having a band gap of 2.46 eV. XRD analysis revealed a single-phased structure of LFOCo-So, whereas LFOCo-Mo showed different phases. The calculated crystallite sizes of LFOCo-So and LFOCo-Mo were 22 nm and 39 nm, respectively. FTIR spectroscopy indicated the characteristics of metal-oxygen vibrations of perovskites in both lanthanum ferrite (LFO) nanoparticles, whereas a slight shifting of Raman scattering modes in LFOCo-Mo in contrast to LFOCo-So showed the octahedral distortion of the perovskite by changing the template. SEM micrographs indicated porous particles of lanthanum ferrite with LFOCo-So being more uniformly distributed, and EDX confirmed the stoichiometric ratios of the lanthanum, iron, and oxygen in the fabricated lanthanum ferrite. The high-intensity green emission in the photoluminescence spectrum of LFOCo-So indicated more prominent oxygen vacancies than LFOCo-Mo. The photocatalytic efficiency of synthesized LFOCo-So and LFOCo-Mo was investigated against cefadroxil drug under solar light irradiation. At optimized photocatalytic conditions, LFOCo-So showed higher degradation efficiency of 87% in only 20 min than LFOCo-Mo having photocatalytic activity of 81%. The excellent recyclability of the LFOCo-So reflected that it could be reused without affecting photocatalytic efficiency. These findings showed that sorbitol is a useful template for the lanthanum ferrite particles imparting outstanding features, enabling it to be used as an efficient photocatalyst for environmental remediation.
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Affiliation(s)
- Ammara Nazir
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Lahore, 54000, Pakistan
| | - Muhammad Imran
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Lahore, 54000, Pakistan.
| | - Farah Kanwal
- Centre for Physical Chemistry, School of Chemistry, University of the Punjab, Lahore, 54000, Pakistan
| | - Shoomaila Latif
- School of Physical Sciences, University of the Punjab, Lahore, 54000, Pakistan
| | - Ayesha Javaid
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Lahore, 54000, Pakistan
| | - Tak H Kim
- School of Environment and Science, Griffith University, 170 Kessels Road, Nathan, QLD, 4111, Australia
| | - Grzegorz Boczkaj
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland; EkoTech Center, Gdańsk University of Technology, G. Narutowicza St. 11/12, Gdansk, 80-233, Poland
| | - Ashwag Shami
- Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia
| | - Hafiz Iqbal
- Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia.
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Wu H, Quan Y, Liu M, Tian X, Ren C, Wang Z. Synthesis of AgBr/Ti 3C 2@TiO 2 ternary composite for photocatalytic dehydrogenation of 1,4-dihydropyridine and photocatalytic degradation of tetracycline hydrochloride. RSC Adv 2023; 13:21754-21768. [PMID: 37476041 PMCID: PMC10354501 DOI: 10.1039/d3ra02164e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 07/10/2023] [Indexed: 07/22/2023] Open
Abstract
In this work, AgBr/Ti3C2@TiO2 ternary composite photocatalyst was prepared by a solvothermal and precipitation method with the aims of introducing Ti3C2 as a cocatalyst and TiO2 as a compositing semiconductor. The crystal structure, morphology, elemental state, functional groups and photoelectrochemical properties were studied by XRD, SEM, TEM, XPS, FI-IR and EIS. The photocatalytic performances of the composites were investigated by the photodehydrogenation of diethyl 1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate (1,4-DHP) and the photodegradation of tetracycline hydrochloride (TCH) under visible light irradiation (λ > 400 nm). The AgBr/Ti3C2@TiO2 composite photocatalyst showed enhanced photocatalytic performance in both photocatalytic reactions. The photocatalytic activity of the composite photocatalyst is dependent on the proportional content of Ti3C2@TiO2. With optimized Ti3C2@TiO2 proportion, the photocatalytic ability of the AgBr/Ti3C2@TiO2 composite was 24.5 times as high as that of Ti3C2@TiO2 for photodehydrogenation of 1,4-DHP and 1.9 times as high as that of pure AgBr for photodegradation of TCH. The enhanced photocatalytic performance of the AgBr/Ti3C2@TiO2 composite should be due to the formation of a p-n heterojunction structure between AgBr and Ti3C2@TiO2 and the excellent electronic properties of Ti3C2, which enhanced the visible light absorption capacity, lowered the internal resistance, speeded up the charge transfer and reduced the recombination efficiency of photo-generated carriers. Mechanism studies showed that superoxide free radical (˙O2-) was the main active species. In addition, the composite photocatalyst also displayed good stability, indicating its reutilization in practical application.
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Affiliation(s)
- Hanliu Wu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Yan Quan
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Meiling Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Xuemei Tian
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Chunguang Ren
- College of Life Sciences, Yantai University Yantai 264005 China
| | - Zhonghua Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
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Salgado BCB, Valentini A. Photocatalytic performance of SiO2@TiO2 spheres in selective conversion of oxidation of benzyl alcohol to benzaldehyde and reduction of nitrobenzene to aniline. AN ACAD BRAS CIENC 2023; 95:e20220105. [PMID: 37436200 DOI: 10.1590/0001-3765202320220105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/17/2022] [Indexed: 07/13/2023] Open
Abstract
Selective photocatalytic oxidation of benzyl alcohol to benzaldehyde and reduction of nitrobenzene to aniline reactions are investigated by using SiO2@TiO2 spheres produced in a simple route using chitosan as a template. The spheres are predominantly macroporous and, the XRD points out an amorphous crystallographic profile suggesting the uniform distribution of TiO2. Under low-power lighting for 4 hours, the conversions achieved was of the order of 49% and 99% for benzyl alcohol and nitrobenzene, respectively, with selectivity to benzaldehyde and aniline of 99% in both reactions. The study also follows the effects of the solvent and the presence of O2.
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Affiliation(s)
- Bruno C B Salgado
- Departamento de Química e Meio Ambiente, Instituto Federal do Ceará, Campus Maracanaú, 61939-140 Maracanaú, CE, Brazil
| | - Antoninho Valentini
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-970 Fortaleza, CE, Brazil
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Yulizar Y, Abdullah I, Surya RM, Alifa NL. Green synthesis of novel YMnO 3-doped TiO 2 for enhanced visible-light- driven photocatalytic degradation of malachite green. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118139. [PMID: 37285771 DOI: 10.1016/j.jenvman.2023.118139] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/03/2023] [Accepted: 05/08/2023] [Indexed: 06/09/2023]
Abstract
Recently, new methods of utilizing chemistry materials to overcome environmental issues worldwide, for instance, water purification have widely evolved since it is well-aligned with the sustainable development goals 6: clean water and sanitation. These issues have become a vital research topic for researchers in the last decade, particularly, the use of green photocatalyst due to the limitation of renewable resources. Herein, we report the modification of titanium dioxide with yttrium manganite (TiO2/YMnO3) by a novel high-speed stirring technique in n-hexane-water utilizing Annona muricata L. leaf extracts (AMLE). The YMnO3 incorporation in the presence of TiO2 was introduced to accelerate the photocatalytic performance for the degradation of malachite green in aqueous media. TiO2 modification with YMnO3 presented a drastic decline of bandgap energy from 3.34 to 2.38 eV and the highest rate constant (kapp) of 2.275 × 10-2 min-1. Surprisingly, TiO2/YMnO3 exhibited an extraordinary photodegradation efficiency of 95.34%, which was 1.9-fold higher than that of TiO2 under visible light illumination. The enhanced photocatalytic activity is ascribed to the formation of a TiO2/YMnO3 heterojunction, narrower optical band gap, excellent charge carrier separation. H+ and .O2- were the major scavenger species that play a significant role in the photodegradation of malachite green. Additionally, TiO2/YMnO3 shows outstanding stability over five cycles of photocatalytic reaction without significant loss of its effectiveness. This work presents a recent understanding of the green construction of a novel TiO2-based YMnO3 photocatalyst with excellent efficiency in the visible region for environmental technology application in water purification specifically in degrading organic dyes.
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Affiliation(s)
- Yoki Yulizar
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia.
| | - Iman Abdullah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia
| | - Rizki Marcony Surya
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia
| | - Naya Luvy Alifa
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia
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11
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Warshagha MZA, Muneer M, Althagafi II, Ahmed SA. Highly efficient and stable AgI-CdO nanocomposites for photocatalytic and antibacterial activity. RSC Adv 2023; 13:5013-5026. [PMID: 36777948 PMCID: PMC9909248 DOI: 10.1039/d2ra07626h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
For the last several decades, semiconducting materials and nanocomposites have received a lot of interest in generating highly efficient photocatalysts to destroy organic pollutants and eradicate bacteria. This study uses a simple deposition and precipitation approach at ambient temperature to create a unique and efficient AgI-CdO heterojunction. DRS, IR, SEM, EDS, XRD, EIS, and TEM were utilized to identify the material. SEM and TEM investigation depict the completely spherical, hexagonal forms and zigzag cubes for synthesized AgI-CdO. The EDX spectra reveal the presence of Ag, I, Cd, and O elements without impurity peaks showing that the prepared samples are highly pure. The activity of the synthesized materials was tested by degrading two different chromophoric dyes and a drug derivative (paracetamol) in an aqueous suspension under visible light. In addition, the activity of the most active catalyst was compared with Degussa P25, Fenton's reagent, and under sunlight for degradation of MB and RhB under similar conditions. Photolysis of paracetamol was also looked at using HPLC to identify intermediates formed in the photo-oxidation process. In addition, antibacterial activity was also investigated with the synthesized CdO-AgI nanocomposite in vitro against human pathogenic bacterial strains and compared with that of pure materials like AgI and standard ampicillin. The results showed excellent activity with the composite material, which could be due to the higher surface areas and the interactions between AgI and CdO nanoparticles. Quenching investigations revealed O2˙- and holes are principal reactive species. A viable photocatalytic degradation mechanism for organic pollutant elimination over the AgI-CdO nanocomposite has been sketched out based on the obtained results.
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Affiliation(s)
| | - M. Muneer
- Department of Chemistry, Aligarh Muslim UniversityAligarh-202002India
| | - Ismail I. Althagafi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura UniversityMakkah 21955Saudi Arabia
| | - Saleh A. Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura UniversityMakkah 21955Saudi Arabia
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12
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Domestic microwave-assisted synthesis of Pd doped-BiVO4 photocatalysts. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Lei C, Sun N, Wu H, Zhao Y, Yu C, Janani BJ, Fakhri A. Bio-photoelectrochemical degradation, and photocatalysis process by the fabrication of copper oxide/zinc cadmium sulfide heterojunction nanocomposites: Mechanism, microbial community and antifungal analysis. CHEMOSPHERE 2022; 308:136375. [PMID: 36088970 DOI: 10.1016/j.chemosphere.2022.136375] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/16/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
In this work, the fabrication of the CuO on ZnCdS as a heterojunction nanocomposites were conducted by hydrothermal method and the synthesis method was confirmed by the XRD, XPS, EDS, UV-vis spectrum analysis. The CuO/ZnCdS was used as a photocathode in the bio-photoelectrochemical system (BPES) for tetracycline (TC) degradation under solar irradiation. The CuO/ZnCdS photocathode indicated substantial photocatalytic efficiency for TC degradation, due to the fast separation and transfer of photogenerated carriers. The ESR test evaluates the mechanism of degradation, and shows that ·OH, and ·O2- were contributed to TC degradation. The TC degradation was 1.59 times higher than the unilluminated process (98.72% vs 61.71). The photocatalysis test shows that the TC was degraded about 90.5% in 1.5 h. Then, the synthesized CuO/ZnCdS nanocomposites were studied for the biological application such as antifungal activities. CuO/ZnCdS nanocomposites depicted substantial antimicrobial activity versus Candida-albicans by in vitro process. Therefore, this study suggests the novel system for the antibiotics degradation, and as antifungal application.
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Affiliation(s)
- Chao Lei
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Nabo Sun
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Huizhen Wu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Yonggang Zhao
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Cun Yu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, China.
| | | | - Ali Fakhri
- Department of Chemistry, Academy of Materials Science, Navi Mumbai, India
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14
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Sanko V, Şenocak A, Oğuz Tümay S, Demirbas E. A novel comparative study for electrochemical urea biosensor design: effect of different ferrite nanoparticles (MFe2O4, M: Cu, Co, Ni, Zn) in urease immobilized composite system. Bioelectrochemistry 2022; 149:108324. [DOI: 10.1016/j.bioelechem.2022.108324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
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15
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Kapoor A, Pratibha, Rajput JK. Solar light photocatalytic activity of CuO/TiO2 mixed oxide derived from conjugated azomethine metal complex for degradation of food colorants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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16
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Tekin G, Ersöz G, Atalay S. Photo-degradation of sugar processing wastewater by copper doped bismuth oxyiodide: Assessment of treatment performance and kinetic studies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115432. [PMID: 35759968 DOI: 10.1016/j.jenvman.2022.115432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/14/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
In this study, photo-Fenton-like oxidation method was evaluated for synthetic sugar industry wastewater using visible-light driven Cu-BiOI photocatalyst. Reaction conditions including initial pH, catalyst loading, initial hydrogen peroxide (H2O2) concentration, and temperature, were optimized. At these optimized conditions, the total saccharide concentration (TSC) and total organic carbon (TOC) removals were 56.20% and 30.67%, respectively whereas the maximum TSC and TOC removal reached up to 93.35% and 74.72% respectively by decreasing initial sucrose concentration. The kinetic study showed that the reaction order for sucrose and TOC oxidation was determined as 2 for pseudo-homogeneous power law models with respect to sucrose concentration and TOC, respectively.For heterogeneous models, Langmuir-Hinshelwood model based on the mechanism of adsorbed pollutant and oxidant on different catalytic sites was the best fit for oxidation of sucrose and other organic intermediates. According to the catalyst characterization studies, incorporation of copper was successful and Cu-BiOI possesses high photocatalytic activity accomplished by acid-assisted synthesis method.
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Affiliation(s)
- Gülen Tekin
- Ege University, Faculty of Engineering, Chemical Engineering Department, 35100, Bornova, İzmir, Turkey.
| | - Gülin Ersöz
- Ege University, Faculty of Engineering, Chemical Engineering Department, 35100, Bornova, İzmir, Turkey.
| | - Süheyda Atalay
- Ege University, Faculty of Engineering, Chemical Engineering Department, 35100, Bornova, İzmir, Turkey.
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17
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Degradation of 4-Tert-Butylphenol in Water Using Mono-Doped (M1: Mo, W) and Co-Doped (M2-M1: Cu, Co, Zn) Titania Catalysts. NANOMATERIALS 2022; 12:nano12142326. [PMID: 35889551 PMCID: PMC9318463 DOI: 10.3390/nano12142326] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 06/30/2022] [Accepted: 07/04/2022] [Indexed: 02/05/2023]
Abstract
Mono-doped (Mo-TiO2 and W-TiO2) and co-doped TiO2 (Co-Mo-TiO2, Co-W-TiO2, Cu-Mo-TiO2, Cu-W-TiO2, Zn-Mo-TiO2, and Zn-W-TiO2) catalysts were synthesized by simple impregnation methods and tested for the photocatalytic degradation of 4-tert-butylphenol in water under UV (365 nm) light irradiation. The catalysts were characterized with various analytical methods. X-ray diffraction (XRD), Raman, Diffuse reflectance (DR) spectroscopies, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), and Energy dispersive spectroscopy (EDS) were applied to investigate the structure, optical properties, morphology, and elemental composition of the prepared catalysts. The XRD patterns revealed the presence of peaks corresponding to the WO3 in W-TiO2, Co-W-TiO2, Cu-W-TiO2, and Zn-W-TiO2. The co-doping of Cu and Mo to the TiO2 lattice was evidenced by the shift of XRD planes towards higher 2θ values, confirming the lattice distortion. Elemental mapping images confirmed the successful impregnation and uniform distribution of metal particles on the TiO2 surface. Compared to undoped TiO2, Mo-TiO2 and W-TiO2 exhibited a lower energy gap. Further incorporation of Mo-TiO2 with Co or Cu introduced slight changes in energy gap and light absorption characteristics, particularly visible light absorption. In addition, photoluminescence (PL) showed that Cu-Mo-TiO2 has a weaker PL intensity than undoped TiO2. Thus, Cu-Mo-TiO2 showed better catalytic activity than pure TiO2, achieving complete degradation of 4-tert-butylphenol under UV light irradiation after 60 min. The application of Cu-Mo-TiO2 under solar light conditions was also tested, and 70% of 4-tert-butylphenol degradation was achieved within 150 min.
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18
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Tian X, Wu H, Hu X, Wang Z, Ren C, Cheng Z, Dou L, Lin YW. Enhanced photocatalytic performance of ZnO/AgCl composites prepared by high-energy mechanical ball milling. NEW J CHEM 2022. [DOI: 10.1039/d2nj00798c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ZnO/AgCl composites prepared by high-energy ball milling showed excellent photocatalytic activity for RhB degradation and 1,4-DHP dehydrogenation under visible-light irradiation.
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Affiliation(s)
- Xuemei Tian
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Hanliu Wu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Xiaoyan Hu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Zhonghua Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Chunguang Ren
- Yantai Institute of Materia Medica, Yantai 264000, Shandong, China
| | - Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Lin Dou
- Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, Hunan, China
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19
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Saha T, Babu MMH, Arifuzzaman M, Podder J. Thermodynamic and dynamic stability in a new potential Cs 2AgAsCl 6 perovskite: insight from DFT study. Phys Chem Chem Phys 2022; 24:26609-26621. [DOI: 10.1039/d2cp03152c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A schematic diagram of the possible energy band level for photocatalytic activity: (a) favorable energy band level, (b) unfavorable VBM, and (c) unfavorable CBM position.
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Affiliation(s)
- Tusar Saha
- Department of Physics, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Md. Majibul Haque Babu
- Department of Physics, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Md. Arifuzzaman
- Department of Physics, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Jiban Podder
- Department of Physics, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
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20
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Shen Y, Liu Y, Xi X, Nie ZR. Hydrothermal construction of WO3.0.33H2O/g-C3N4 nanocomposites with enhanced adsorption and photocatalytic activity. CrystEngComm 2022. [DOI: 10.1039/d1ce01517f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tungsten trioxide has attracted extensive attention for photocatalytic applications owing to its unique structure and intrinsic merits; however, small specific surface area and rapid electron-hole recombination still limit its adsorption...
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21
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Du C, Yang L, Tan S, Song J, Zhang Z, Wang S, Xiong Y, Yu G, Chen H, Zhou L, Wu H, Liu Y. Reduced graphene oxide modified Z-scheme AgI/Bi 2MoO 6 heterojunctions with boosted photocatalytic activity for water treatment originated from the efficient charge pairs partition and migration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:66589-66601. [PMID: 34235678 DOI: 10.1007/s11356-021-15180-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
In order to enhance degradation of harmful organic pollutants like Rhodamine B (RhB) dye under visible-light irradiation (λ >420 nm), a silver iodide/reduced graphene oxide/bismuth molybdate (AgI/rGO/Bi2MoO6) Z-scheme heterojunction photocatalyst was synthesized by a solvothermal process combined with an in-situ precipitation technique. The AgI (15 wt.%)/rGO/Bi2MoO6 (AGBMO-15) photocatalyst with a dosage of 0.5 g/L exhibited the highest photocatalytic activity with 98.0% RhB removal under an initial concentration of 10 mg/L within 30 min. This removal rate was approximately 65.8%, 57.7%, and 72.7% higher than that for a rGO/Bi2MoO6 (GBMO) binary composite, pure AgI powder, and pristine Bi2MoO6 nanoplates, respectively. The novel photocatalyst achieved approximately three times higher photocatalytic degradation within a shorter period of visible-light irradiation than pure Bi2MoO6. Through photoluminescence analysis and trapping experiments, this outstanding performance was attributed to the efficient separation of photogenerated electron-hole pairs owing to an internal electric field at the contact interface of AgI and Bi2MoO6, which generated more superoxide radical anions (•O2-) as primary reactive species to promote RhB degradation. Meanwhile, the rGO participated in the capture of visible-light and played a role of solid electronic medium at the AgI/Bi2MoO6 interface, which realized an effective Z-scheme electron transfer path, avoided the self oxidation of photocatalyst and prolonged the carrier life. Furthermore, the AGBMO-15 photocatalyst exhibited excellent photocatalytic degradation stability, maintaining an RhB removal rate of 96.2% after four cycles of reuse. Due to its simplicity, reusability, and controllability, the proposed photocatalyst has excellent application potential for the environmental remediation of wastewater.
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Affiliation(s)
- Chunyan Du
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, People's Republic of China
| | - Lu Yang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
| | - Shiyang Tan
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
| | - Jiahao Song
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
| | - Zhuo Zhang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
| | - Shitao Wang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
| | - Ying Xiong
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
- Research Center of Resource Environment and Urban Planning, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Guanlong Yu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, People's Republic of China
| | - Hong Chen
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China.
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, People's Republic of China.
| | - Lu Zhou
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, People's Republic of China
| | - Haipeng Wu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, People's Republic of China
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, People's Republic of China
| | - Yuanyuan Liu
- Research Center of Resource Environment and Urban Planning, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
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22
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Zhou M, Tian X, Yu H, Wang Z, Ren C, Zhou L, Lin YW, Dou L. WO 3/Ag 2CO 3 Mixed Photocatalyst with Enhanced Photocatalytic Activity for Organic Dye Degradation. ACS OMEGA 2021; 6:26439-26453. [PMID: 34661001 PMCID: PMC8515572 DOI: 10.1021/acsomega.1c03694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
The development of an efficient photocatalyst with superior activity under visible light has been regarded as a significant strategy for pollutant degradation and environmental remediation. Herein, a series of WO3/Ag2CO3 mixed photocatalysts with different proportions were prepared by a simple mixing method and characterized by XRD, SEM, TEM, XPS, and DRS techniques. The photocatalytic performance of the WO3/Ag2CO3 mixed photocatalyst was investigated by the degradation of rhodamine B (RhB) under visible light irradiation (λ > 400 nm). The photocatalytic efficiency of the mixed WO3/Ag2CO3 photocatalyst was rapidly increased with the proportion of Ag2CO3 up to 5%. The degradation percentage of RhB by WO3/Ag2CO3-5% reached 99.7% within 8 min. The pseudo-first-order reaction rate constant of WO3/Ag2CO3-5% (0.9591 min-1) was 118- and 14-fold higher than those of WO3 (0.0081 min-1) and Ag2CO3 (0.0663 min-1). The catalytic activities of the mixed photocatalysts are not only higher than those of the WO3 and Ag2CO3 but also higher than that of the WO3/Ag2CO3 composite prepared by the precipitation method. The activity enhancement may be because of the easier separation of photogenerated electron-hole pairs. The photocatalytic mechanism was investigated by free radical capture performance and fluorescence measurement. It was found that light-induced holes (h+) was the major active species and superoxide radicals (·O2 -) also played a certain role in photocatalytic degradation of RhB.
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Affiliation(s)
- Mei Zhou
- Chemical
Synthesis and Pollution Control Key Laboratory of Sichuan Province,
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Xuemei Tian
- Chemical
Synthesis and Pollution Control Key Laboratory of Sichuan Province,
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Hao Yu
- Chemical
Synthesis and Pollution Control Key Laboratory of Sichuan Province,
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Zhonghua Wang
- Chemical
Synthesis and Pollution Control Key Laboratory of Sichuan Province,
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Chunguang Ren
- Yantai
Institute of Materia Medica, Yantai 264000, Shandong, China
| | - Limei Zhou
- Chemical
Synthesis and Pollution Control Key Laboratory of Sichuan Province,
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
| | - Ying-Wu Lin
- School
of Chemistry and Chemical Engineering, University
of South China, Hengyang 421001, Hunan, China
| | - Lin Dou
- Key
Laboratory of Green Chemistry of Sichuan Institutes of Higher Education,
College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China
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23
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Su J, Su H, Chen J, Li X. Semiconductor‐based nanocomposites for selective organic synthesis. NANO SELECT 2021. [DOI: 10.1002/nano.202100065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Juan Su
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
| | - Hui Su
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
| | - Jie‐Sheng Chen
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
| | - Xin‐Hao Li
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China
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24
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Ultrasonication-assisted synthesis of gold nanoparticles decorated ultrathin graphitic carbon nitride nanosheets as a highly efficient electrocatalyst for sensitive analysis of caffeic acid in food samples. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01895-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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