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Alanazi AK, Kumar PS, Shanmugapriya M, Prasannamedha G, Abo-Dief HM. Two-step fabrication of cellulose embedded Fe 3O 4/Fe 3+ composite beads as catalyst in degradation of sulfamethoxazole in floating bed reactor. CHEMOSPHERE 2023:139158. [PMID: 37290507 DOI: 10.1016/j.chemosphere.2023.139158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/17/2023] [Accepted: 06/05/2023] [Indexed: 06/10/2023]
Abstract
In this study, magnetite particles were successfully embedded in sodium carboxymethyl cellulose as beads using FeCl3 as the cross-linker in two step-method and it was used as a Fenton-like catalyst to degrade sulfamethoxazole in aqueous solution. The surface morphology and functional groups influence of the Na-CMC magnetic beads was studied using FTIR and SEM analysis. The nature of synthesized iron oxide particles was confirmed as magnetite using XRD diffraction. The structural arrangement of Fe3+ and iron oxide particles with CMC polymer was discussed. The influential factors for SMX degradation efficiency were investigated including the pH of the reaction medium (4.0), catalyst dosage (0.2 g L-1) and initial SMX concentration (30 mg L-1). The results showed that under optimal conditions 81.89% SMX degraded in 40 min using H2O2. The reduction in COD was estimated to be 81.2%. SMX degradation was initiated neither by the cleaving of C-S nor C-N followed by some chemical reactions. Complete mineralization of SMX was not achieved which could be due to an insufficient amount of Fe particles in CMC matrix that are responsible for the generation of *OH radicals. It was explored that degradation followed pseudo-first order kinetics. Fabricated beads were successfully applied in a floating bed column in which the beads were allowed to float in sewage water spiked with SMX for 40 min. A total reduction of 79% of COD was achieved in treating sewage water. The beads could be used 2-3 times with significant reduction in catalytic activity. It was found that the degradation efficiency was attributed to a stable structure, textural property, active sites and *OH radicals.
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Affiliation(s)
- Abdullah K Alanazi
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
| | - M Shanmugapriya
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India
| | - G Prasannamedha
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India
| | - Hala M Abo-Dief
- Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
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Qureshi A, Javed S, Akram MA, Schmidt-Mende L, Fakharuddin A. Solvent-Assisted Crystallization of an α-Fe 2O 3 Electron Transport Layer for Efficient and Stable Perovskite Solar Cells Featuring Negligible Hysteresis. ACS OMEGA 2023; 8:18106-18115. [PMID: 37251118 PMCID: PMC10210035 DOI: 10.1021/acsomega.3c01405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
Inorganic-organic metal halide perovskite solar cells (PSCs) show power conversion efficiency values approaching those of state-of-the-art silicon solar cells. In a quest to find suitable charge transport materials in PSCs, hematite (α-Fe2O3) has emerged as a potential electron transport layer (ETL) in n-i-p planar PSCs due to its low cost, UV light stability, and nontoxicity. Yet, the performance of α-Fe2O3-based PSCs is far lower than that of state-of-the-art PSCs owing to the poor quality of the α-Fe2O3 ETL. In this work, solvent-assisted crystallization of α-Fe2O3 ETLs was carried out to examine the impact of solvents on the optoelectronic properties of α-Fe2O3 thin films. Among the various solvents used in this study (deionized water, ethanol, iso-propanol, and iso-butanol), optimized ethanol-based α-Fe2O3 ETLs lead to champion device performance with a power conversion efficiency of 13% with a reduced hysteresis index of 0.04 in an n-i-p-configured PSC. The PSC also exhibited superior long-term inert and ambient stabilities compared to a reference device made using a SnO2 ETL. Through a series of experiments spanning structural, morphological, and optoelectronic properties of the various α-Fe2O3 thin films and their devices, we provide insights into the reasons for the improved photovoltaic performance. It is noted that the formation of a pinhole-free compact morphology of ETLs facilitates crack-free surface coverage of the perovskite film atop an α-Fe2O3 ETL, reduces interfacial recombination, and enhances charge transfer efficiency. This work opens up the route toward novel ETLs for the development of efficient and photo-stable PSCs.
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Affiliation(s)
- Akbar
Ali Qureshi
- School
of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
| | - Sofia Javed
- School
of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
| | - Muhammad Aftab Akram
- Department
of Materials Science & Engineering, Pak-Austria Fachhochschule, Institute of Applied Sciences & Technology, Haripur 22650, Pakistan
| | | | - Azhar Fakharuddin
- Department
of Physics, University of Konstanz, Konstanz 78464, Germany
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Khanam J, Hasan MR, Biswas B, Jahan SA, Sharmin N, Ahmed S, Al-Reza SM. Development of ceramic grade red iron oxide pigment from waste iron source. Heliyon 2023; 9:e12854. [PMID: 36685414 PMCID: PMC9853363 DOI: 10.1016/j.heliyon.2023.e12854] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/25/2022] [Accepted: 01/04/2023] [Indexed: 01/10/2023] Open
Abstract
Ceramic grade red iron oxide (α-Fe2O3) nanoparticles pigments have been synthesized from waste condensed milk containers which contain a prominent amount of iron (93.2%). The synthesis method comprised of two steps: in the first step ferrous sulfate was prepared following an acid leaching method; while the second step was oxidation and calcination of ferrous sulfate to produce desired α-Fe2O3 in nano form. The structure, functional groups, chemical state, morphology, particle size, surface area, elemental, thermal analysis and magnetic properties of the samples were investigated using XRD, FTIR, XPS, SEM, BET, EDS, TG-DT and VSM respectively. Pure hematite (α-Fe2O3) phase was confirmed by XRD and the average crystal sizes were in the range 34-126 nm have been performed by Debye-Scherer's formula, which are consistent with the results as achieved from SEM images. Agglomerated irregular spherical nanoparticles (45-149 nm) were found in SEM image. The surface chemistry and the chemical state (Fe3+) of the hematite nanoparticles was also confirmed by XPS. The mesoporous nature of the nanoparticles with high surface area were measured by BET and it has been revealed that the BET specific surface area (33.55 m2/g) was marginally higher than the commercial one. The magnetic nature of the nanoparticles was portrayed by VSM and the nanoparticles showed the ferromagnetic behavior. Moreover, particle size distributions and zeta potential values have been also measured by DLS.
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Affiliation(s)
- Juliya Khanam
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh,Corresponding author. ;
| | - Md. Rashib Hasan
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, Bangladesh
| | - Bristy Biswas
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
| | - Shirin Akter Jahan
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
| | - Nahid Sharmin
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
| | - Samina Ahmed
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
| | - Sharif Md. Al-Reza
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, Bangladesh
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Tchuessa EBH, Ouédraogo IWK, Richardson Y, Sidibé SDS. Production of Biodiesel by Ethanolic Transesterification of Sunflower Oil on Lateritic Clay- based Heterogeneous Catalyst. Catal Letters 2022. [DOI: 10.1007/s10562-022-04177-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Brontowiyono W, AbdulHussein WA, Smaisim GF, Mahmoud MZ, Singh S, Lafta HA, Hussein SA, Kadhim MM, Mustafa YF, Aravindhan S. Annealing Temperature Effect on Structural, Magnetic Properties and Methyl Green Degradation of Fe2O3 Nanostructures. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07118-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Dutta S, Kumar P, Yadav S, Dixit R, Sharma RK. Recyclable magnetically retrievable nanocatalysts for C–heteroatom bond formation reactions. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
During recent years, magnetic separation has proven to be a highly indispensable and sustainable tool for facile separation of catalysts from the reaction medium with the aid of only an external magnetic force that precludes the requirement of energy intensive, solvent based centrifugation or filtration techniques. Extensive research in the area of catalysis has clearly divulged that while designing any catalyst, the foremost features that need to be paid due attention to include high activity, ready recoverability and good reusability. Fortunately, the magnetic nanocatalysts involving a superparamagnetic core material that could comprise of iron oxides such as magnetite, maghemite or hematite or mixed ferrites (CoFe2O4, CuFe2O4) have offered bright prospects of designing the ideal catalysts by proving their efficacy as strong support material that could be further engineered with various tools of nanotechnology and efficiently catalyze various C–heterobond formation reactions. This chapter provides succinct overview of all the approaches utilized for fabricating different types of magnetic nanoparticles and strategies adopted for imparting them durability. The prime forte however remains to exclusively showcase the applications of the various types of magnetic nanocatalysts in C–O, C–N, C–S and miscellaneous (C–Se, C–Te) bond formation reactions which are anticipated to benefit the synthetic community on a broad spectrum by helping them rationalize and analyze the key features that need to be taken into account, while developing these magical nanostructured catalytic systems for boosting the green bond formation reactions/transformations.
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Affiliation(s)
- Sriparna Dutta
- Green Chemistry Network Centre, Department of Chemistry , University of Delhi , Delhi - 110007 , India
- Hindu College, Department of Chemistry , University of Delhi , Delhi - 110007 , India
| | - Prashant Kumar
- Department of Chemistry , SRM University Delhi-NCR , Sonepat , Haryana , India
| | - Sneha Yadav
- Green Chemistry Network Centre, Department of Chemistry , University of Delhi , Delhi - 110007 , India
| | - Ranjana Dixit
- Ramjas College, Department of Chemistry , University of Delhi , Delhi - 110007 , India
| | - Rakesh Kumar Sharma
- Green Chemistry Network Centre, Department of Chemistry , University of Delhi , Delhi - 110007 , India
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7
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Qureshi AA, Javed S, Javed HMA, Jamshaid M, Ali U, Akram MA. Systematic Investigation of Structural, Morphological, Thermal, Optoelectronic, and Magnetic Properties of High-Purity Hematite/Magnetite Nanoparticles for Optoelectronics. NANOMATERIALS 2022; 12:nano12101635. [PMID: 35630857 PMCID: PMC9144984 DOI: 10.3390/nano12101635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022]
Abstract
Iron oxide nanoparticles, especially hematite (α-Fe2O3) and magnetite (Fe3O4) have attained substantial research interest in various applications of green and sustainable energy harnessing owing to their exceptional opto-magneto-electrical characteristics and non-toxicity. In this study, we synthesized high-purity hematite and magnetite nanoparticles from a facile top-down approach by employing a high-energy ball mill followed by ultrasonication. A systematic investigation was then carried out to explore the structural, morphological, thermal, optoelectrical, and magnetic properties of the synthesized samples. The experimental results from scanning electron microscopy and X-ray diffraction corroborated the formation of highly crystalline hematite and magnetite nanoparticles with average sizes of ~80 nm and ~50 nm, respectively. Thermogravimetric analysis revealed remarkable results on the thermal stability of the newly synthesized samples. The optical studies confirmed the formation of a single-phase compound with the bandgaps dependent on the size of the nanoparticles. The electrochemical studies that utilized cyclic voltammetry and electrochemical impedance spectroscopy techniques verified these iron oxide nanoparticles as electroactive species which can enhance the charge transfer process with high mobility. The hysteresis curves of the samples revealed the paramagnetic behavior of the samples with high values of coercivity. Thus, these optimized materials can be recommended for use in future optoelectronic devices and can prove to be potential candidates in the advanced research of new optoelectronic materials for improved energy devices.
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Affiliation(s)
- Akbar Ali Qureshi
- School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan; (A.A.Q.); (U.A.); (M.A.A.)
- Department of Mechanical Engineering, Bahauddin Zakariya University, Multan 60000, Pakistan;
| | - Sofia Javed
- School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan; (A.A.Q.); (U.A.); (M.A.A.)
- Correspondence:
| | | | - Muhammad Jamshaid
- Department of Mechanical Engineering, Bahauddin Zakariya University, Multan 60000, Pakistan;
| | - Usman Ali
- School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan; (A.A.Q.); (U.A.); (M.A.A.)
| | - Muhammad Aftab Akram
- School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan; (A.A.Q.); (U.A.); (M.A.A.)
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8
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Chakraborty I, Lai SN, Wu JM, Lai CS. α-Fe 2O 3 Nanoparticles Aided-Dual Conversion for Self-Powered Bio-Based Photodetector. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1147. [PMID: 35407265 PMCID: PMC9000849 DOI: 10.3390/nano12071147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/25/2022] [Accepted: 03/27/2022] [Indexed: 01/04/2023]
Abstract
Eco-friendly energy harvesting from the surrounding environment has been triggered extensive researching enthusiasm due to the threat of global energy crisis and environmental pollutions. By the conversion of mechanical energy that is omnipresent in our environment into electrical energy, triboelectric nanogenerator (TENG) can potentially power up small electronic devices, serves as a self-powered detectors and predominantly, it can minimize the energy crisis by credibly saving the traditional non-renewable energy. In this study, we present a novel bio-based TENG comprising PDMS/α-Fe2O3 nanocomposite film and a processed human hair-based film, that harvests the vibrating energy and solar energy simultaneously by the integration of triboelectric technology and photoelectric conversion techniques. Upon illumination, the output voltage and current signals rapidly increased by 1.4 times approximately, compared to the dark state. Experimental results reveal that the photo-induced enhancement appears due to the effective charge separation depending on the photosensitivity of the hematite nanoparticles (α-Fe2O3 nanoparticles) over the near ultraviolet (UV), visible and near infrared (IR) regions. Our work provides a new approach towards the self-powered photo-detection, while developing a propitious green energy resource for the circular bio-economy.
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Affiliation(s)
- Ishita Chakraborty
- Department of Electronic Engineering, Chang Gung University, Guishan District, Taoyuan City 33302, Taiwan;
| | - Sz-Nian Lai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30010, Taiwan; (S.-N.L.); (J.-M.W.)
- Ph.D. Program in Prospective Functional Materials Industry, National Tsing Hua University, Hsinchu 30010, Taiwan
| | - Jyh-Ming Wu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30010, Taiwan; (S.-N.L.); (J.-M.W.)
- High Entropy Materials Center, National Tsing Hua University, Hsinchu 30010, Taiwan
| | - Chao-Sung Lai
- Department of Electronic Engineering, Chang Gung University, Guishan District, Taoyuan City 33302, Taiwan;
- Artificial Intelligence and Green Technology Research Center, Chang Gung University, Guishan District, Taoyuan City 33302, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, Taishan District, New Taipei City 24301, Taiwan
- Department of Nephrology, Chang Gung Memorial Hospital, Guishan District, Taoyuan City 33305, Taiwan
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Chen Y, Chen Y, Shi W, Hu S, Huang Q, Liu GS, Shi J, Chen L, Azeman NH, Ashrif A Bakar A, Luo Y, Chen Z. MoS 2-nanoflower enhanced programmable adsorption/desorption plasmonic detection for bipolar-molecules with high sensitivity. Biosens Bioelectron 2022; 198:113787. [PMID: 34864241 DOI: 10.1016/j.bios.2021.113787] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 10/22/2021] [Accepted: 11/11/2021] [Indexed: 11/28/2022]
Abstract
High sensitivity and capturing ratio are strongly demanded for surface plasmon resonance (SPR) sensors when applied in detection of small molecules. Herein, an SPR sensor is combined with a novel smart material, namely, MoS2 nanoflowers (MNFs), to demonstrate programmable adsorption/desorption of small bipolar molecules, i.e., amino acids. The MNFs overcoated on the plasmonic gold layer increase the sensitivity by 25% compared to an unmodified SPR sensor, because of the electric field enhancement at the gold surface. Furthermore, as the MNFs have rich edge sites and negatively charged surfaces, the MNF-SPR sensors exhibit not only much higher bipolar-molecule adsorption capability, but also efficient desorption of these molecules. It is demonstrated that the MNF-SPR sensors enable controllable detection of amino acids by adjusting solution pH according to their isoelectric points. In addition, the MNFs decorated on the plasmonic interface can be as nanostructure frameworks and modified with antibody, which allows for specific detection of proteins. This novel SPR sensor provides a new simple strategy for pre-screening of amino acid disorders in blood plasma and a universal high-sensitive platform for immunoassay.
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Affiliation(s)
- Yu Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
| | - Yaofei Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
| | - Weicheng Shi
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
| | - Shiqi Hu
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
| | - Qizhang Huang
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Gui-Shi Liu
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China.
| | - Jifu Shi
- Siyuan Laboratory, Department of Physics, Jinan University, Guangzhou , 510632, China.
| | - Lei Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
| | - Nur Hidayah Azeman
- Photonics Technology Laboratory, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Ahmad Ashrif A Bakar
- Photonics Technology Laboratory, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Yunhan Luo
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China.
| | - Zhe Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication Technology, Department of Optoelectronic Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632, China
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Chakraborty I, Lai SN, Wu MC, Lin HY, Li C, Wu JM, Lai CS. Charge trapping with α-Fe 2O 3 nanoparticles accompanied by human hair towards an enriched triboelectric series and a sustainable circular bioeconomy. MATERIALS HORIZONS 2021; 8:3149-3162. [PMID: 34610636 DOI: 10.1039/d1mh00919b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This work reports a new approach to amending polydimethylsiloxane (PDMS) by supporting α-Fe2O3 nanoparticles (NPs), thereby generating a material suitable for use as a negative triboelectric material. Additionally, human hair exhibits a profound triboelectrification effect and is a natural regenerative substance, and it was processed into a film to be used as a positive triboelectric material. Spatial distribution of α-Fe2O3 NPs, the special surface morphologies of a negative tribological layer containing nano-clefts with controlled sizes and a valley featuring a positive tribolayer based on human hair made it possible to demonstrate facile and scalable fabrication of a triboelectric nanogenerator (TENG) presenting enhanced performance; this nanogenerator produced a mean peak-to-peak voltage of 370.8 V and a mean output power density of 247.2 μW cm-2 in the vertical contact-separation mode. This study elucidates the fundamental charge transfer mechanism governing the triboelectrification efficiency and its use in harvesting electricity for the further development of powerful TENGs suitable for integration into wearable electronics and self-charging power cells, and the work also illustrates a recycling bioeconomy featuring systematic utilization of human hair waste as a regenerative resource for nature and society.
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Affiliation(s)
- Ishita Chakraborty
- Department of Electronic Engineering, Chang Gung University, Taoyuan, Taiwan.
| | - Sz-Nian Lai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
| | - Ming-Chung Wu
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan, Taiwan
- Green Technology Research Center, Chang Gung University, Taoyuan, Taiwan
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsun-Yen Lin
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
| | - Chuan Li
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jyh Ming Wu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
- High Entropy Materials Center, National Tsing Hua University, Hsinchu, Taiwan
| | - Chao-Sung Lai
- Department of Electronic Engineering, Chang Gung University, Taoyuan, Taiwan.
- Department of Nephrology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Materials Engineering, Ming-Chi University of Technology, New Taipei City, Taiwan
- Artificial Intelligent Innovation Research Center, Chang Gung University, Taoyuan, Taiwan
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11
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The photocatalytic antibacterial behavior of Cu-doped nanocrystalline hematite prepared by mechanical alloying. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01659-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Khan I, Zada N, Khan I, Sadiq M, Saeed K. Enhancement of photocatalytic potential and recoverability of Fe 3O 4 nanoparticles by decorating over monoclinic zirconia. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:1473-1489. [PMID: 33312656 PMCID: PMC7721935 DOI: 10.1007/s40201-020-00563-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 10/04/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Photodegradation of organic pollutants is considered to be the most suitable and cheaper technique to counter the decontamination issues. Metal nanoparticles are considered to be the most effective heterogeneous photocatalysts for photodegradation of organic pollutants. Besides, iron oxide nanoparticles are well-known photocatalysts for degrading organic pollutants. METHODS We reported the synthesis of neat iron oxide nanoparticles (Fe3O4 NPs) and zirconia supported iron oxide nanoparticles (Fe3O4/ZrO2 NPs) by facile chemical reduction technique for photodegradation ofa toxic azo dye namely methyl red. RESULTS The XRD and FTIR analysis has demonstrated a crystalline phase Fe3O4 NPs. The morphological features via scanning electronic microscopy (FESEM) suggested agglomerated morphology of neat Fe3O4 NPs with 803.54 ± 5.11 nm average particle size and revealed the uniform morphology and homogenous dispersion of Fe3O4 NPs over ZrO2 surface in Fe3O4/ZrO2 nanocomposite. A polydispersity index (PDI) of 0.47 showed sufficient variations in the particle size of neat Fe3O4 NPs, which is also supported by the results obtained from atomic force microscopy (AFM), FESEM and Transmission Electron Microscopy (TEM). Fe3O4/ZrO2 NPs demonstrated efficient methyl red degradation over a short period of time under simulated light and degraded about ~ 91.0 ± 1.0% and 87.0 ± 1.0% dye in 40 min, under UV and visible light, respectively. CONCLUSION The excellent photodegradation efficacy and sustainability of Fe3O4/ZrO2 NPs can be attributed to the homogenous distribution of Fe3O4 NPs over ZrO2, which facilitates the generation of photoexcitons (electrons and holes), enhanced charge transfer and minimize the charge recombination.
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Affiliation(s)
- Idrees Khan
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Pakistan
| | - Noor Zada
- Department of Chemistry, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Ibrahim Khan
- Centre of Integrative Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Kingdom of Saudi Arabia
| | - Muhammad Sadiq
- Department of Chemistry, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Khalid Saeed
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Pakistan
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13
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Synthesis of Hematite Nanodiscs from Natural Laterites and Investigating Their Adsorption Capability of Removing Ni2+ and Cd2+ Ions from Aqueous Solutions. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020057] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, disc-like hematite (Fe2O3) nanoparticles were prepared using a readily available inexpensive earth material, ferruginous laterite, via a low-cost synthesis route. Prepared hematite nanoparticles were characterized using X-Ray diffraction (XRD), inductively coupled plasma mass spectroscopy (ICP-MS), particle size analyzer (PSA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and nitrogen adsorption-desorption analyzer. The performance of hematite nanoparticles was evaluated as a heavy metal ion adsorbent. Batch adsorption experiments were conducted to study the adsorption behaviour of Ni2+ and Cd2+ ions as a function of the amount of adsorbent, contact time, and pH. Adsorption data fitted to the linearized Langmuir and Freundlich kinetic models were compared and discussed. The correlation coefficient (R2) was used to determine the best fit kinetic model. Our data fitted the Langmuir kinetic model well and the highest adsorption efficiencies were found to be 62.5 mg/g for Ni2+ and 200 mg/g for Cd2+, respectively. Due to high surface area, pore volume with active sites, and sorption capabilities, hematite nanoparticles can be used as efficient and economical nano-adsorbents for the removal of Ni2+ and Cd2+ ions from industrial wastewater.
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Wang L, Shi C, Wang L, Pan L, Zhang X, Zou JJ. Rational design, synthesis, adsorption principles and applications of metal oxide adsorbents: a review. NANOSCALE 2020; 12:4790-4815. [PMID: 32073021 DOI: 10.1039/c9nr09274a] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The shortage of water resources and increasingly serious water pollution have driven the development of high-efficiency water treatment technology. Among a variety of technologies, adsorption is widely used in environmental remediation. As a class of typical adsorbents, metal oxides have been developed for a long time and continued to attract widespread attention, since they have unique physicochemical properties, including abundant surface active sites, high chemical stability, and adjustable shape and size. In this review, the basic principles of the adsorption process will be first elucidated, including affecting factors, evaluation index, adsorption mechanisms, and common kinetic and isotherm models. Then, the adsorption properties of several typical metal oxides, and key parameters affecting the adsorption performance such as particle/pore size, morphology, functionalization and modification, supports and calcination temperature will be discussed, as well as their application in the removal of various inorganic and organic contaminants. In addition, desorption and recycling of the spent adsorbent are summarized. Finally, the future development of metal oxide based adsorbents is also discussed.
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Affiliation(s)
- Li Wang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Chengxiang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Li Wang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. and Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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