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Lee KH, Farheen R, Arshad Z, Ali M, Hassan H, Alshareef M, A Dahshan, Khalid U. Optimized Cu-doping in ZnO electro-spun nanofibers for enhanced photovoltaic performance in perovskite solar cells and photocatalytic dye degradation. RSC Adv 2024; 14:15391-15407. [PMID: 38741976 PMCID: PMC11089536 DOI: 10.1039/d4ra01544d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Perovskite solar cells (PSCs) compete with conventional solar cells regarding their low-temperature processing and suitable power conversion efficiency. In PSCs, the electron transport layer (ETL) plays a vital role in charge extraction and avoiding recombination; however, poor charge transport of ETL leads to high internal resistance and associated low fill factors. To successfully resolve this challenge, copper-doped zinc oxide nanofibers as an electron transport layer are prepared with various doping levels of 1, 2, and 3 wt% using the electrospinning sol-gel method. The 3 wt% doping of Cu revealed the optimum performance as an ETL, as it offers an electrically efficient transporting structure. SEM images revealed a randomly oriented distribution of nanofibers with different sizes having mesoporous uniformity. Optical properties of doped nanofibers examined using UV-visible analysis showed an extended light absorption due to heteroatom-doping. Adding Cu into the ZnO leads to enhanced charge mobility across the electron transport material. According to Hall measurements, dopant concentration favors the conductivity and other features essentially required for charge extraction and transport. The solar cell efficiency of ZnO doped with 0%, 1%, 2%, and 3% Cu is 4.94%, 5.97%, 6.89%, and 9.79%, respectively. The antibacterial and photocatalytic activities of the prepared doped and undoped ZnO are also investigated. The better light absorption of Cu-ZnO showed a pronounced improvement in the photocatalytic activity of textile electrodes loaded with doped ZnO. The dye degradation rate reaches 95% in 180 min under visible light. In addition, these textile electrodes showed strong antibacterial activity due to the production of reactive oxygen species under light absorption.
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Affiliation(s)
- Kang Hoon Lee
- Department of Energy and Environment Engineering, Catholic University Korea
| | - Rabeea Farheen
- Department of Physics, Government College Women University Faisalabad Pakistan
| | - Zafar Arshad
- School of Engineering and Technology, National Textile University 37640 Faisalabad Pakistan
| | - Mumtaz Ali
- School of Engineering and Technology, National Textile University 37640 Faisalabad Pakistan
- Department of Organic and Nano Engineering, Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Republic of Korea
| | - Hamza Hassan
- Department of Chemical Engineering, University of Engineering and Technology Peshawar Pakistan
| | - Mubark Alshareef
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University Makkah 24230 Saudi Arabia
| | - A Dahshan
- Department of Physics, College of Science, King Khalid University Abha Saudi Arabia
| | - Usama Khalid
- School of Engineering and Technology, National Textile University 37640 Faisalabad Pakistan
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2
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Sarkar S, Banerjee A, Bandopadhyay R. Bacterial Polysaccharide-Stabilized Silver Nanoparticles Photocatalytically Decolorize Azo Dyes. Appl Biochem Biotechnol 2024; 196:2466-2486. [PMID: 37477844 DOI: 10.1007/s12010-023-04648-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2023] [Indexed: 07/22/2023]
Abstract
Bacterial polysaccharide is advantageous over plant, algal, and fungal polysaccharides in terms of stability, non-toxicity, and biodegradable nature. In addition, bacterial cell wall polysaccharide (CPs) is very little explored compared to exopolysaccharide. In this study, CPs have been isolated from thermotolerant Chryseobacterium geocarposphaerae DD3 (CPs3) from textile industry dye effluent. Structural characterization of the CPs was done by different techniques, viz., scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDX), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) spectroscopy, and thermogravimetric analysis (TGA). CPs3 demonstrated compact non-porous amorphous surface composed of evenly distributed macromolecular lumps. TGA revealed a high thermostability (~ 350 °C) of the polysaccharide. FTIR and NMR confirm the polysaccharidic nature of the polymer, consisting of glucose units linked by both β-(1 → 3) and β-(1 → 4) glycosidic bonds. The functional properties of CPs3 were evaluated for industrial use as additive, especially antibacterial, emulsification, and flocculation capacities. A single-step green synthesis of silver nanoparticle (AgNP) was performed using CPs3. AgNP was characterized using ultraviolet-visible (UV-Vis) spectroscopy, transmission electron microscopy (TEM), AFM, and particle size analyses. The CPs3-stabilized AgNP exhibited potential photocatalytic activity against a broad range of azo dyes, congo red (88.33 ± 0.48%), methyl red (76.81 ± 1.03%), and malachite green (47.34 ± 0.90%) after only 3 h of reaction. According to our knowledge, this is the first report on CPs from C. geocarposphaerae. The results demonstrated multifunctionality of CPs3 in both prospective, CPs3 as additive in biotechnology industry as well as Cps3-stabilized AgNP for bioremediation of azo dye.
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Affiliation(s)
- Shrabana Sarkar
- UGC-Center of Advanced Study, Department of Botany, The University of Burdwan, Golapbag, Bardhaman, West Bengal, 713104, India
- Centro de Investigación de Estudios Avanzados del Maule, Vicerrectoría de Investigación Y Postgrado, Universidad Católica del Maule, 3466706, Talca, Chile
| | - Aparna Banerjee
- Instituto de Ciencias Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, 3467987, Talca, Chile
| | - Rajib Bandopadhyay
- UGC-Center of Advanced Study, Department of Botany, The University of Burdwan, Golapbag, Bardhaman, West Bengal, 713104, India.
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3
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Mondal S, Ayon SA, Islam MS, Rana MS, Billah MM. Morphological evaluation and boosted photocatalytic activity of N-doped ZnO nanoparticles prepared via Co-precipitation method. Heliyon 2023; 9:e20948. [PMID: 37876471 PMCID: PMC10590957 DOI: 10.1016/j.heliyon.2023.e20948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/10/2023] [Accepted: 10/11/2023] [Indexed: 10/26/2023] Open
Abstract
Pristine and nitrogen (N) doped zinc oxide (ZnNxO1-x, x = 0, 0.005, 0.01, and 0.02) nanoparticles (NPs) were successfully synthesized using chemical co-precipitation approach. The formation of pure crystalline wurtzite ZnO phase without any second phase during N-doping was confirmed by X-ray diffraction (XRD) analysis of N-doped ZnO samples. X-ray photoelectron spectroscopic (XPS) analysis ensured the effective inclusion of nitrogen into ZnO matrix. The morphological analysis revealed the formation of nanorods as a result of N-doping. The optical band gap calculated from UV-vis spectroscopy was observed to decrease up to 1 mol.% N doping followed by a subtle increase. Photoluminescence (PL) spectra revealed that electron-hole recombination was the least for 1 mol.% N doped ZnO NPs. ZnN0.01O0.99 NPs showed superior photocatalytic activity among all samples due to rod-shaped NPs and reduced electron-hole recombination, which was accessed by the photodegradation of Rhodamine B (RhB).
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Affiliation(s)
- Sudipta Mondal
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Sikder Ashikuzzaman Ayon
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Md Saiful Islam
- Department of Nanomaterials and Ceramic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - Md Shahjalal Rana
- Department of Nanomaterials and Ceramic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - Md Muktadir Billah
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
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4
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Humayoun UB, Mehmood F, Hassan Y, Rasheed A, Dastgeer G, Anwar A, Sarwar N, Yoon D. Harnessing Bio-Immobilized ZnO/CNT/Chitosan Ternary Composite Fabric for Enhanced Photodegradation of a Commercial Reactive Dye. Molecules 2023; 28:6461. [PMID: 37764237 PMCID: PMC10536000 DOI: 10.3390/molecules28186461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Growing demand for sustainable wastewater treatment drives interest in advanced photocatalytic materials. Immobilized photocatalysts hold potential for addressing industrial wastewater organic pollutants, offering substantial surface area, agglomeration prevention, and easy removal. In this study, we successfully immobilized ZnO and carbon nanotubes onto a textile substrate through bilateral esterification and explored their effectiveness as a potent photocatalyst for degrading of commercial textile colorant reactive blue 4 (RB-4) colorant. Findings demonstrated significant improvements in photocatalytic performance upon integrating ZnO and CNTs into the fabric, coupled with chitosan immobilization. The immobilization process of ZnO and CNTs onto the substrate was elucidated through a proposed reaction mechanism, while the appearance of carbonyl peaks at 1719.2 cm-1 in the composite fabric further confirmed bilateral esterification. The as-developed immobilized nano-catalyst exhibited remarkable photocatalytic efficiency with an impressive 93.54% color degradation of RB-4. This innovative approach underscores the immense potential of the ternary immobilized (ZnO/fCNT/chitosan) composite fabric for efficient photocatalytic degradation in textile coloration processes. Exploring the early-stage development of immobilized photocatalysts contributes to safer and more eco-friendly practices, addressing pressing environmental challenges effectively.
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Affiliation(s)
- Usama Bin Humayoun
- Department of Textile Engineering, University of Engineering & Technology, Lahore (Faisalabad Campus), Faisalabad 38000, Pakistan (A.A.)
| | - Fazal Mehmood
- Department of Textile Engineering, University of Engineering & Technology, Lahore (Faisalabad Campus), Faisalabad 38000, Pakistan (A.A.)
| | - Yasir Hassan
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Aamir Rasheed
- School of Materials Science and Engineering, Anhui University, Hefei 230022, China
| | - Ghulam Dastgeer
- Department of Physics and Astronomy, Sejong University, Seoul 05006, Republic of Korea;
| | - Asad Anwar
- Department of Textile Engineering, University of Engineering & Technology, Lahore (Faisalabad Campus), Faisalabad 38000, Pakistan (A.A.)
| | - Nasir Sarwar
- Department of Textile Engineering, University of Engineering & Technology, Lahore (Faisalabad Campus), Faisalabad 38000, Pakistan (A.A.)
| | - Daeho Yoon
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
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5
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Ayu D, Gea S, Andriayani, Telaumbanua DJ, Piliang AFR, Harahap M, Yen Z, Goei R, Tok AIY. Photocatalytic Degradation of Methylene Blue Using N-Doped ZnO/Carbon Dot (N-ZnO/CD) Nanocomposites Derived from Organic Soybean. ACS OMEGA 2023; 8:14965-14984. [PMID: 37151531 PMCID: PMC10157678 DOI: 10.1021/acsomega.2c07546] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 03/30/2023] [Indexed: 08/29/2023]
Abstract
This study reports on successful synthesis of carbon dots (CDs), nitrogen-doped zinc oxide (N-ZnO), and N-ZnO/CD nanocomposites as photocatalysts for degradation of methylene blue. The first part was the synthesis of CDs utilizing a precursor from soybean and ethylenediamine as a dopant by a hydrothermal method. The second part was the synthesis of N-ZnO with urea as the nitrogen dopant carried out by a calcination method in a furnace at 500 °C for 2 h in an N2 atmosphere (5 °C min-1). The third part was the synthesis of N-ZnO/CD nanocomposites. The characteristics of CDs, N-ZnO, and N-ZnO/CD nanocomposites were analyzed through Fourier transform infrared (FTIR), UV-vis absorbance, photoluminescence (PL), high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), thermal gravimetry analysis (TGA), field-emission scanning electron microscopy energy-dispersive spectroscopy (FESEM EDS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis. Based on the HR-TEM analysis, the CDs had a spherical shape with an average particle size of 4.249 nm. Meanwhile, based on the XRD and HR-TEM characterization, the N-ZnO and N-ZnO/CD nanocomposites have wurtzite hexagonal structures. The materials of N-ZnO and N-ZnO/CD show increased adsorption in the visible light region and low energy gap E g. The E g values of N-ZnO and N-ZnO/CDs were found to be 2.95 and 2.81 eV, respectively, whereas the surface area (S BET) values 3.827 m2 g-1 (N-ZnO) and 3.757 m2 g-1(N-ZnO/CDs) belonged to the microporous structure. In the last part, the photocatalysts of CDs, N-ZnO, and N-ZnO/CD nanocomposites were used for degradation of MB (10 ppm) under UV-B light irradiation pH = 7.04 (neutral) for 60 min at room temperature. The N-ZnO/CD nanocomposites showed a photodegradation efficiency of 83.4% with a kinetic rate of 0.0299 min-1 higher than N-ZnO and CDs. The XRD analysis and FESEM EDS of the N-ZnO/CDs before and after three cycles confirm the stability of the photocatalyst with an MB degradation of 58.2%. These results have clearly shown that the N-ZnO/CD nanocomposites could be used as an ideal photocatalytic material for the decolorization of organic compounds in wastewater.
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Affiliation(s)
- Dinda
Gusti Ayu
- Postgraduate
School, Department of Chemistry, Faculty of Mathematics and Natural
Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
- Cellulosic
and Functional Materials Research Centre, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - Saharman Gea
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
- Cellulosic
and Functional Materials Research Centre, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - Andriayani
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - Dewi Junita Telaumbanua
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - Averroes Fazlur Rahman Piliang
- Cellulosic
and Functional Materials Research Centre, Universitas Sumatera Utara, Medan 20155, Indonesia
- Department
of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - Mahyuni Harahap
- Department
of Chemistry, Faculty of Science Technology and Information, Universitas Sari Mutiara Indonesia, Medan 20124, Indonesia
| | - Zhihao Yen
- School of
Materials Science and Engineering, Nanyang
Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Ronn Goei
- School of
Materials Science and Engineering, Nanyang
Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Alfred Iing Yoong Tok
- School of
Materials Science and Engineering, Nanyang
Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Chaudhary RG, Sonkusare V, Bhusari G, Mondal A, Potbhare A, Juneja H, Abdala A, Sharma R. Preparation of mesoporous ThO 2 nanoparticles: Influence of calcination on morphology and visible-light-driven photocatalytic degradation of indigo carmine and methylene blue. ENVIRONMENTAL RESEARCH 2023; 222:115363. [PMID: 36716808 DOI: 10.1016/j.envres.2023.115363] [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: 11/07/2022] [Revised: 01/10/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
The present article reports the synthesis of thoria nanoparticles (ThO2 NPs) via sol-gel process and examines the effect of calcination temperature of ThO2 on the morphology and photocatalytic degradation of indigo carmine (IC) and methylene blue (MB) under visible-light. As-synthesized white crystals of ThO2 were subjected to calcination at different temperatures, viz. 700 °C (TH-700), 800 °C (TH-800), and 900 °C (TH-900). The effect of calcination temperature on the structural, morphological, thermal, surface area-porosity, and optical properties of ThO2 NPs were investigated by diverse analytical techniques. XRD patterns show the cubic-space group Fm-3m (225) with parameter a = 5.597 Å and reveals crystallite sizes increased with calcination temperature. The bandgap energy was found to be 1.85 eV, 2.33 eV, and 2.71 eV for TH-700, TH-800, and TH-900 NPs, respectively, calculated by Kubelka-Munk (KM) plot. SEM and TEM unveil that the sample TH-700 calcined at a low temperature of 700 °C yields assembled nanosheets, while at higher temperatures, i.e., 800 °C (TH-800) and 900 °C (TH-900), produces agglomerated nanomaterials. Further, TH-700 sample exhibits enhanced photocatalytic degradation within 120 min for both IC and MB dye than TH-800 and TH-900 counterparts. Among the dyes, IC shows improved photocatalytic efficiency than MB for TH-700, owing to the increased optical absorption and improved separation of photogenerated charge carriers. The reusability study of TH-700 reveals that the catalysts were stable up to four successive cycles with no drastic changes in photocatalytic efficiency. Also, systematic photodisintegration of IC was investigated by Liquid chromatography-mass spectrometry (LC-MS).
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Affiliation(s)
- Ratiram Gomaji Chaudhary
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, And Science and Commerce, Kamptee, 441001, India.
| | - Vaishali Sonkusare
- Post Graduate Teaching Department of Chemistry, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur, 440033, India.
| | - Ganesh Bhusari
- Research and Development Division, Solar Industries India Limited, Nagpur, 440023, India.
| | - Aniruddha Mondal
- Division of Materials Science, Lulea University of Technology, Lulea, 97187, Sweden.
| | - Ajay Potbhare
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, And Science and Commerce, Kamptee, 441001, India.
| | - Harjeet Juneja
- Post Graduate Teaching Department of Chemistry, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur, 440033, India.
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A and M University at Qatar POB, 23784, Doha, Qatar.
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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7
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Kraidi AA, Mansouri M, Karamian E. The synergetic effect of lanthanide (La and Ce) and N co-doping of ZnO NPs for high-rate photocatalytic phenol degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24168-24178. [PMID: 36335181 DOI: 10.1007/s11356-022-23729-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
Simultaneously, lanthanide and N-modified ZnO NPs were synthesized and applied for the photocatalytic phenol degradation under LED irradiation. Among La and Ce, Ce-doped ZnO exhibited more efficiently photocatalytic activity. XRD analysis confirmed that most of Ce3+ was oxidized to Ce2O3/CeO2 over the photocatalyst surface as a secondary phase. This is due to the larger ionic radius of Ce3+ relative to that of Zn2+. Ce and N co-doping of ZnO led to narrowing the band gap and suppressing charge recombination rate. The effect of key variables, dopant type, dopant concentration, catalyst loading, initial dye concentration, light source power, solution pH, and H2O2 content on the photocatalytic degradation of phenol was systematically investigated. The utmost conversion of phenol, 100%, was observed by ZnO-Ce5-N0.33 sample under optimum conditions. Kinetics investigation revealed that under the optimum conditions, photodegradation of phenol follows a pseudo-first-order kinetics model with rate constant of 0.0631 min-1. Given the fact that the ZnO-Ce5-N0.33 is a heterostructure composed of Zn1-xCexO1-yNy and Ce2O3 and CeO2, a double Z-scheme pattern is suggested as a plausible charge transfer mechanism.
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Affiliation(s)
- Ahmed Abdulkadhim Kraidi
- Department of Chemical Engineering, Ilam University, Ilam, Iran
- Department of Oil and Gas Engineering, Collage of Engineering, University of Thi-Qar, Nasiriyah, Iraq
| | - Mohsen Mansouri
- Department of Chemical Engineering, Ilam University, Ilam, Iran.
| | - Elham Karamian
- Department of Chemical Engineering, Ilam University, Ilam, Iran
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8
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Kulis-Kapuscinska A, Kwoka M, Borysiewicz MA, Wojciechowski T, Licciardello N, Sgarzi M, Cuniberti G. Photocatalytic degradation of methylene blue at nanostructured ZnO thin films. NANOTECHNOLOGY 2023; 34:155702. [PMID: 36595265 DOI: 10.1088/1361-6528/aca910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The photocatalytic degradation of the wastewater dye pollutant methylene blue (MB) at ZnO nanostructured porous thin films, deposited by direct current reactive magnetron sputtering on Si substrates, was studied. It was observed that over 4 photocatalytic cycles (0.3 mg · l-1MB solution, 540 minUV irradiation), the rate constantkof MB degradation decreased by ∼50%, varying in the range (1.54 ÷ 0.78) · 10-9(mol·l-1·min-1). For a deeper analysis of the photodegradation mechanism, detailed information on the nanostructured ZnO surface morphology and local surface and subsurface chemistry (nonstoichiometry) were obtained by using scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS) as complementary analytical methods. The SEM studies revealed that at the surface of the nanostructured ZnO thin films a coral reef structure containing polycrystalline coral dendrites is present, and that, after the photocatalytic experiments, the sizes of individual crystallites increased, varying in the range 43 ÷ 76 nm for the longer axis, and in the range 28 ÷ 58 nm for the shorter axis. In turn, the XPS studies showed a slight non-stoichiometry, mainly defined by the relative [O]/[Zn] concentration of ca. 1.4, whereas [C]/[Zn] was ca. 1.2, both before and after the photocatalytic experiments. This phenomenon was directly related to the presence of superficial ZnO lattice oxygen atoms that can participate in the oxidation of the adsorbed MB molecules, as well as to the presence of surface hydroxyl groups acting as hole-acceptors to produce OH· radicals, which can be responsible for the generation of superoxide ions. In addition, after experiments, the XPS measurements revealed the presence of carboxyl and carbonyl functional groups, ascribable to the oxidation by-products formed during the photodegradation of MB.
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Affiliation(s)
- Anna Kulis-Kapuscinska
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Monika Kwoka
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Michal Adam Borysiewicz
- Łukasiewicz Research Network-Institute of Microelectronics and Photonics, Aleja Lotników 32/46, 02-668 Warsaw, Poland
| | - Tomasz Wojciechowski
- International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland
| | - Nadia Licciardello
- Institute for Materials Science, Max Bergmann Centre of Biomaterials and Dresden Center for Nanoanalysis, TU Dresden, D-01062, Dresden, Germany
| | - Massimo Sgarzi
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, I-30172 Venezia Mestre, Italy
| | - Gianaurelio Cuniberti
- Institute for Materials Science, Max Bergmann Centre of Biomaterials and Dresden Center for Nanoanalysis, TU Dresden, D-01062, Dresden, Germany
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9
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Haribhau Waghchaure R, Ashok Adole V, Shivaji Kushare S, Ashok Shinde R, Sonu Jagdale B. Visible light prompted and modified ZnO catalyzed rapid and efficient removal of hazardous crystal violet dye from aqueous solution: A systematic experimental study. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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10
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Evaluating the response of nitrogen implantation in ZnO ALD thin films and their photocatalytic assessment. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Kayani ABA, Kuriakose S, Monshipouri M, Khalid FA, Walia S, Sriram S, Bhaskaran M. UV Photochromism in Transition Metal Oxides and Hybrid Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100621. [PMID: 34105241 DOI: 10.1002/smll.202100621] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Limited levels of UV exposure can be beneficial to the human body. However, the UV radiation present in the atmosphere can be damaging if levels of exposure exceed safe limits which depend on the individual the skin color. Hence, UV photochromic materials that respond to UV light by changing their color are powerful tools to sense radiation safety limits. Photochromic materials comprise either organic materials, inorganic transition metal oxides, or a hybrid combination of both. The photochromic behavior largely relies on charge transfer mechanisms and electronic band structures. These factors can be influenced by the structure and morphology, fabrication, composition, hybridization, and preparation of the photochromic materials, among others. Significant challenges are involved in realizing rapid photochromic change, which is repeatable, reversible with low fatigue, and behaving according to the desired application requirements. These challenges also relate to finding the right synergy between the photochromic materials used, the environment it is being used for, and the objectives that need to be achieved. In this review, the principles and applications of photochromic processes for transition metal oxides and hybrid materials, photocatalytic applications, and the outlook in the context of commercialized sensors in this field are presented.
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Affiliation(s)
- Aminuddin Bin Ahmad Kayani
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
| | - Sruthi Kuriakose
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
| | - Mahta Monshipouri
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
| | | | - Sumeet Walia
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
- School of Engineering, RMIT University, Melbourne, Australia
| | - Sharath Sriram
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
| | - Madhu Bhaskaran
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, Melbourne, Australia
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12
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Rodríguez-López J, Rangel R, Ramos-Carrazco A, Berman-Mendoza D, Quintana-Owen P, Bartolo-Pérez P, Alvarado-Gil JJ. Columnar nitrogen-doped ZnO nanostructured thin films obtained through atomic layer deposition. NANOTECHNOLOGY 2021; 32:405704. [PMID: 34186516 DOI: 10.1088/1361-6528/ac0fa1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
The present study was aimed to develop nitrogen-doped nanostructured ZnO thin films. These films were produced in a sequential procedure involving the atomic layer deposition technique, and a hydrothermal process supported by microwave heating. Employing the atomic layer deposition technique, through self-limited reactions of diethylzinc (DEZn) and H2O, carried out at 3.29 × 10-4atm and 190 °C, a high-quality ZnO seed was grown on a Si (100) substrate, producing a textured film. In a second stage, columnar ZnO nanostructures were grown perpendicularly oriented to the silicon substrate on those films, using a solvothermal process in a microwave heating facility, employing Zn(NO3)2as zinc precursor, while hexamethylenetetramine (HMTA) was used to produce the bridging of Zn2+ions. The consequence of N-doping concentration on the physicochemical properties of ZnO thin films was studied. The manufactured films were structurally analyzed by scanning electron microscopy and x-ray diffraction. Also, x-ray photoelectron spectroscopy, Raman, and UV-vis spectroscopies were used to provide further insight on the effect of nitrogen doping. The N-doped films displayed textured wurtzite-like structures that changes their preferential growth from the (002) to the (100) crystallographic plane, apparently promoted by the increase of nitrogen precursor. It is also shown that nitrogen-doped films undergo a reduction in their bandgap, compared to ZnO. The methodology presented here provides a viable way to perform high-quality N-ZnO nanostructured thin films.
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Affiliation(s)
- J Rodríguez-López
- División de Estudios de Posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicólas de Hidalgo, Morelia, Michoacán, Mexico
| | - R Rangel
- División de Estudios de Posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicólas de Hidalgo, Morelia, Michoacán, Mexico
| | - A Ramos-Carrazco
- Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Sonora, Mexico
| | - D Berman-Mendoza
- Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Sonora, Mexico
| | - P Quintana-Owen
- Departamento de Física Aplicada, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Mérida, Yucatán, Mexico
| | - P Bartolo-Pérez
- Departamento de Física Aplicada, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Mérida, Yucatán, Mexico
| | - J J Alvarado-Gil
- Departamento de Física Aplicada, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Mérida, Yucatán, Mexico
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13
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Hosseini-Sarvari M, Sarvestani AM. N-doped ZnO as an efficient photocatalyst for thiocyanation of indoles and phenols under visible-light. Photochem Photobiol Sci 2021; 20:903-911. [PMID: 34241818 DOI: 10.1007/s43630-021-00068-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/21/2021] [Indexed: 11/26/2022]
Abstract
In this study, nitrogen-doped ZnO nanorods (N-ZnO NRs) were synthesized via a very simple hydrothermal process, fully characterized, and this photocatalyst was successfully exploited in thiocyanation reactions of indoles and phenols at room temperature under visible light irradiation. Two important classes of aromatic compounds indoles, and phenols using N-ZnO NRs as photocatalyst treated with ammonium thiocyanate as thiocyanation agent formed the corresponding thiocyano compounds in good yields. Nitrogen is one of the most appropriate p-type dopants that is nontoxic, similar to the atomic radius to oxygen, and lower electronegativity and ionization energy than the O atom. Therefore, the N doping converts ZnO into the p-type ZnO semiconductor structure. This potent, simple, and versatile protocol afforded thiocyanation reactions of indole and phenols under visible light. The reactions proceeded through a radical pathway by applying air molecular oxygen as a low cost and environmentally friendly terminal oxidant. The proposed mechanism based on control experiments was thoroughly described.
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Affiliation(s)
- Mona Hosseini-Sarvari
- Nano Photocatalysis Lab, Department of Chemistry, Shiraz University, Shiraz, 7194684795, Islamic Republic of Iran.
| | - Abdollah Masoudi Sarvestani
- Nano Photocatalysis Lab, Department of Chemistry, Shiraz University, Shiraz, 7194684795, Islamic Republic of Iran
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14
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Kokilavani S, Syed A, Thomas AM, Elgorban AM, Bahkali AH, Marraiki N, Raju LL, Das A, Khan SS. Development of multifunctional Cu sensitized Ag-dextran nanocomposite for selective and sensitive detection of mercury from environmental sample and evaluation of its photocatalytic and anti-microbial applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114742] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Hasan I, Shekhar C, Alharbi W, Abu Khanjer M, Khan RA, Alsalme A. A Highly Efficient Ag Nanoparticle-Immobilized Alginate-g-Polyacrylonitrile Hybrid Photocatalyst for the Degradation of Nitrophenols. Polymers (Basel) 2020; 12:E3049. [PMID: 33352658 PMCID: PMC7766039 DOI: 10.3390/polym12123049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/13/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022] Open
Abstract
Herein, we report PAN-g-Alg@Ag-based nanocatalysts synthesis via in situ oxidative free-radical polymerization of acrylonitrile (AN) using Alg@Ag nanoparticles (Alg@Ag NPs). Various analytical techniques, including FTIR, XRD, SEM, TEM, UV-Vis, and DSC, were employed to determine bonding interactions and chemical characteristics of the nanocatalyst. The optimized response surface methodology coupled central composite design (RSM-CCD) reaction conditions were a 35-min irradiation time in a 70-mg L-1 2,4-dinitrophenol (DNP) solution at pH of 4.68. Here, DNP degradation was 99.46% at a desirability of 1.00. The pseudo-first-order rate constant (K1) values were 0.047, 0.050, 0.054, 0.056, 0.059, and 0.064 min-1 with associated half-life (t1/2) values of 14.74, 13.86, 12.84, 12.38, 11.74, 10.82, and 10.04 min that corresponded to DNP concentrations of 10, 20, 30, 40, 50, 60, and 70 mg L-1, respectively, in the presence of PAN-g-Alg@Ag (0.03 g). The results indicate that the reaction followed the pseudo-first-order kinetic model with an R2 value of 0.99. The combined absorption properties of PAN and Alg@Ag NPs on copolymerization on the surface contributed more charge density to surface plasmon resonance (SPR) in a way to degrade more and more molecules of DNP together with preventing the recombination of electron and hole pairs within the photocatalytic process.
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Affiliation(s)
- Imran Hasan
- Environmental Research Laboratory, Department of Chemistry, Chandigarh University, Gharuan, Mohali 140301, Punjab, India; (I.H.); (C.S.)
| | - Charu Shekhar
- Environmental Research Laboratory, Department of Chemistry, Chandigarh University, Gharuan, Mohali 140301, Punjab, India; (I.H.); (C.S.)
| | - Walaa Alharbi
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box-9004, Abha 62529, Saudi Arabia;
| | - Maymonah Abu Khanjer
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
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16
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Chen X, Xu X, Cui J, Chen C, Zhu X, Sun D, Qian J. Visible-light driven degradation of tetracycline hydrochloride and 2,4-dichlorophenol by film-like N-carbon@N-ZnO catalyst with three-dimensional interconnected nanofibrous structure. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122331. [PMID: 32097858 DOI: 10.1016/j.jhazmat.2020.122331] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/21/2020] [Accepted: 02/15/2020] [Indexed: 05/28/2023]
Abstract
The emergence of more and more persistent organic molecules as contaminants in water simulates research towards the development of more advanced technologies, among which photocatalysis is a feasible choice. However, it is still challenging to design a photocatalyst that fulfills all the requirements for industrial application, i.e., active under visible-light irradiation, shape with handy convenience, highly uniform distribution of active sites, substrate with excellent electronic properties, etc. In this study, we report an attempt to solve these issues at once by designing a film-like photocatalyst with uniform distribution of nitrogen-doped ZnO nanoparticles along nitrogen-doped carbon ultrafine nanofibers with three-dimensional interconnected structure. Under visible-light irradiation, the product exhibited remarkable reactivity for the degradation of two model pollutants tetracycline hydrochloride and 2,4-dichlorophenol within 100 min. The cyclic experiments demonstrated only a slight loss (ca. 5 %) of reactivity after five consecutive photocatalytic reactions. We also investigated the detailed relationship between the structural features and the superior properties of this product, as well as the degradation mechanisms. The convenient shape of the product with excellent performances for the treatment of real polluted water increases its suitability for larger scale application. Our work provides a rational design of photocatalysts for environmental remediation.
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Affiliation(s)
- Xiao Chen
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Xuran Xu
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Jian Cui
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Chuntao Chen
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Xufei Zhu
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Dongping Sun
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China.
| | - Jieshu Qian
- Institute of Chemicobiology and Functional Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China.
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17
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Structural and optical characterization of nitrogen and gallium co-doped ZnO thin films, deposited by sol-gel method. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Mavaei M, Chahardoli A, Shokoohinia Y, Khoshroo A, Fattahi A. One-step Synthesized Silver Nanoparticles Using Isoimperatorin: Evaluation of Photocatalytic, and Electrochemical Activities. Sci Rep 2020; 10:1762. [PMID: 32020015 PMCID: PMC7000682 DOI: 10.1038/s41598-020-58697-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/23/2019] [Indexed: 02/01/2023] Open
Abstract
In the current study, isoimperatorin, a natural furanocoumarin, is used as a reducing reagent to synthesize isoimperatorin mediated silver nanoparticles (Iso-AgNPs), and photocatalytic and electrocatalytic activities of Iso-AgNPs are evaluated. Iso-AgNPs consisted of spherically shaped particles with a size range of 79-200 nm and showed catalytic activity for the degradation (in high yields) of New Fuchsine (NF), Methylene Blue (MB), Erythrosine B (ER) and 4-chlorophenol (4-CP) under sunlight irradiation. Based on obtained results, Iso-AgNPs exhibited 96.5%, 96.0%, 92%, and 95% degradation rates for MB, NF, ER, and 4-CP, respectively. The electrochemical performance showed that the as-prepared Iso-AgNPs exhibited excellent electrocatalytic activity toward hydrogen peroxide (H2O2) reduction. It is worth noticing that the Iso-AgNPs were used as electrode materials without any binder. The sensor-based on binder-free Iso-AgNPs showed linearity from 0.1 µM to 4 mM with a detection limit of 0.036 μM for H2O2. This binder-free and straightforward strategy for electrode preparation by silver nanoparticles may provide an alternative technique for the development of other nanomaterials based on isoimperatorin under green conditions. Altogether, the application of isoimpratorin in the synthesis of nano-metallic electro and photocatalysts, especially silver nanoparticles, is a simple, cost-effective and efficient approach.
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Affiliation(s)
- Maryamosadat Mavaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Azam Chahardoli
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Yalda Shokoohinia
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Ric Scalzo Botanical Research Institute, Southwest College of Naturopathic Medicine, Tempe, AZ, USA
| | - Alireza Khoshroo
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Fattahi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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19
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Jia W, Yuan X. Concurrent and dual N-doping of graphene/ZnO nanocomposites for enhanced Cr(vi) photoreduction activity under visible-light irradiation. RSC Adv 2020; 10:30832-30839. [PMID: 35516058 PMCID: PMC9056369 DOI: 10.1039/d0ra05284a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/09/2020] [Indexed: 12/19/2022] Open
Abstract
Simultaneous and dual N-doping of two components in reduced graphene oxide/ZnO nanocomposites were successfully achieved by thermally annealing a GO/Zn(HCO3)2 precursor in an NH3 atmosphere. In this facile preparative procedure, NH3 was used not only as the reagent for in situ reduction of GO but also as the source for N-doping. Detailed characterizations showed that the nitrogen element was successfully and simultaneously incorporated into the crystal lattice of ZnO and graphene phases in the composites and the formation of oxygen vacancies was also achieved. The photocatalytic tests indicated that N-doping of graphene/ZnO (NG/NZO) nanocomposites exhibited the higher Cr(vi) photoreduction activity than graphene/ZnO, virgin N-doped ZnO (NZO) and the sample prepared via simple physically mixing. The mechanistic study demonstrated that the remarkable photocatalytic activity of NG/NZO photocatalysts was due to the synergistic effect of simultaneously N-doping two phases in the composites and the existence of oxygen vacancies, and mainly included the increased electrical conductivity of N-doped graphene (NG), the expansion of visible light harvesting capability of NZO and the effective separation of electron–hole pairs of the oxygen vacancies. Simultaneous and dual N-doping of two components in reduced graphene oxide/ZnO nanocomposites were successfully achieved by thermally annealing a GO/Zn(HCO3)2 precursor in an NH3 atmosphere.![]()
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Affiliation(s)
- Wen Jia
- College of Materials Science and Engineering
- Chongqing Jiaotong University
- Chongqing 400074
- China
| | - Xiaoya Yuan
- College of Materials Science and Engineering
- Chongqing Jiaotong University
- Chongqing 400074
- China
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20
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Singh R, Dutta S. The role of pH and nitrate concentration in the wet chemical growth of nano-rods shaped ZnO photocatalyst. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.01.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Lakhera SK, Watts A, Hafeez HY, Neppolian B. Interparticle double charge transfer mechanism of heterojunction α-Fe2O3/Cu2O mixed oxide catalysts and its visible light photocatalytic activity. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.03.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Byzynski G, Pereira AP, Volanti DP, Ribeiro C, Longo E. High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.11.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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da Silva GTST, Carvalho KTG, Lopes OF, Gomes ES, Malagutti AR, Mastelaro VR, Ribeiro C, Mourão HAJL. Synthesis of ZnO Nanoparticles Assisted by N Sources and their Application in the Photodegradation of Organic Contaminants. ChemCatChem 2017. [DOI: 10.1002/cctc.201700756] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gelson T. S. T. da Silva
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Kele T. G. Carvalho
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Osmando F. Lopes
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Eliziana S. Gomes
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Andréa R. Malagutti
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Valmor R. Mastelaro
- Instituto de Física de São Carlos; Universidade de São Paulo; Avenida Trabalhador São-carlense, 400 13566-590 São Carlos SP Brazil
| | - Caue Ribeiro
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Henrique A. J. L. Mourão
- Instituto de Ciência e Tecnologia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
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24
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Jones DR, Gomez V, Bear JC, Rome B, Mazzali F, McGettrick JD, Lewis AR, Margadonna S, Al-Masry WA, Dunnill CW. Active removal of waste dye pollutants using Ta 3N 5/W 18O 49 nanocomposite fibres. Sci Rep 2017; 7:4090. [PMID: 28642612 PMCID: PMC5481444 DOI: 10.1038/s41598-017-04240-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A scalable solvothermal technique is reported for the synthesis of a photocatalytic composite material consisting of orthorhombic Ta3N5 nanoparticles and WOx≤3 nanowires. Through X-ray diffraction and X-ray photoelectron spectroscopy, the as-grown tungsten(VI) sub-oxide was identified as monoclinic W18O49. The composite material catalysed the degradation of Rhodamine B at over double the rate of the Ta3N5 nanoparticles alone under illumination by white light, and continued to exhibit superior catalytic properties following recycling of the catalysts. Moreover, strong molecular adsorption of the dye to the W18O49 component of the composite resulted in near-complete decolourisation of the solution prior to light exposure. The radical species involved within the photocatalytic mechanisms were also explored through use of scavenger reagents. Our research demonstrates the exciting potential of this novel photocatalyst for the degradation of organic contaminants, and to the authors' knowledge the material has not been investigated previously. In addition, the simplicity of the synthesis process indicates that the material is a viable candidate for the scale-up and removal of dye pollutants on a wider scale.
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Affiliation(s)
- Daniel R Jones
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | - Virginia Gomez
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | - Joseph C Bear
- Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Bertrand Rome
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | - Francesco Mazzali
- College of Engineering, Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | | | - Aled R Lewis
- Systems and Processing Engineering Centre (SPEC), Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | - Serena Margadonna
- College of Engineering, Swansea University Bay Campus, Swansea, SA1 8EN, UK
| | - Waheed A Al-Masry
- Department of Chemical Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Charles W Dunnill
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Swansea, SA1 8EN, UK.
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25
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Guo R, Fan Y, Tang Y. Interesting Ag3PO4 concave rhombic dodecahedra: the same face with different morphologies and photocatalytic properties. RSC Adv 2017. [DOI: 10.1039/c7ra02026k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Different morphologies of Ag3PO4 with the same crystal face give distinct photocatalytic properties.
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Affiliation(s)
- Ruirui Guo
- Key Laboratory of Nonferrous Metals Chemistry
- Resources Utilization of Gansu Province
- State Key Laboratory of Applied and Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
| | - Yaoting Fan
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yu Tang
- Key Laboratory of Nonferrous Metals Chemistry
- Resources Utilization of Gansu Province
- State Key Laboratory of Applied and Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
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26
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Kumar R, Abdel-Wahab M, Barakat M, Rashid J, Salah N, Al-Ghamdi AA. Role of N doping on the structural, optical and photocatalytic properties of the silver deposited ZnO thin films. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.09.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Feng Z, Ren L, Zhang J, Yang P, An M. Influence of additives on microstructure, mechanical and tribological properties of nanocrystalline Zn–Ni coatings in a novel alkaline bath. RSC Adv 2016. [DOI: 10.1039/c6ra02335e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanocrystalline Zn–Ni coatings with excellent wear resistance can be obtained from a novel alkaline bath. Meanwhile, the effects of additives and Ni content in deposits on wear behaviors and the wear mechanism of Zn–Ni coatings are investigated.
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Affiliation(s)
- Zhongbao Feng
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Lili Ren
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Jinqiu Zhang
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Peixia Yang
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Maozhong An
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
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