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Sethi S, Dhir A, Arora V. Time series-based prediction of antibiotic degradation via photocatalysis using ensemble gradient boosting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:24315-24328. [PMID: 38441740 DOI: 10.1007/s11356-024-32720-4] [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: 09/12/2023] [Accepted: 02/26/2024] [Indexed: 04/07/2024]
Abstract
This study aims to evaluate the effectiveness of the laboratory-made catalyst Ni2P-ZrO2 (NPZ) in the degradation of an antibiotic in an aqueous suspension when exposed to ultraviolet (UV) light. The degradation of amoxicillin (AMX) was predicted using time series forecasting through the ensemble gradient boosting model. The degradation experiments were conducted utilizing two distinct photocatalyst compositions of Nickel phosphide-zirconium dioxide (NPZ) in the proportions of 1:9 and 2:8. The most effective experimental results were obtained using a natural pH, a catalyst concentration of 0.20 g/L and reaction duration of 0.5 h after testing the different catalysts. Experimental data were used for training, validating and confirming time series predictions. The use of ensemble technique highly affected the experimental findings. The model's performance was quite satisfactory in terms of correlation coefficient (94.00%), normalized mean square error (0.01) and mean square root error (0.0911) which significantly contributed to the model's accuracy. All input variables, such as pH, catalyst dose and irradiation time, had a significant impact on the degrading efficacy. The study has demonstrated that time series forecasting can be used for predicting the degradation process precisely.
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Affiliation(s)
- Sheetal Sethi
- School of Energy and Environment, Thapar Institute of Engineering and Technology, Patiala, India
| | - Amit Dhir
- School of Energy and Environment, Thapar Institute of Engineering and Technology, Patiala, India.
| | - Vinay Arora
- Computer Science & Engineering Department, Thapar Institute of Engineering and Technology, Patiala, India
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2
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Gomathi M, Sankar A, Kannan S, Shkir M, Reddy VRM. Tin selenide/carbon black nanocomposite-based high efficiency counter electrode for dye-sensitized solar cells (DSSCs). Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Lahiru Sandaruwan RD, Kuramoto R, Wang B, Ma S, Wang H. White Latex: Appealing "Green" Alternative for PVdF in Electrode Manufacturing for Sustainable Li-Ion Batteries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8934-8942. [PMID: 35838145 DOI: 10.1021/acs.langmuir.2c01115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nowadays, poly(vinylidene fluoride) (PVdF) has been dominantly utilized as a polymeric binder in commercialized Li-ion batteries. However, standardized PVdF-based electrode manufacturing seems cost-intensive and environmentally hazardous, which relies on the usage of toxic N-methyl-2-pyrrolidone (NMP) as a dispersant. In view of cost control and environmental awareness, switching to a water-processable green binder, as a substitute for PVdF, has been imperative with realistic significance. Herein, commercially available white latex (WL), containing poly(vinyl acetate) as a staple ingredient, was directly used as an alternative aqueous binder for PVdF in the fabrication of graphite/Li4Ti5O12-based lithium-ion anodes. WL exhibits robust adhesion of the electrode coating to the current collector; meanwhile, the restricted electrolyte swelling of the binder is verified by in situ electrochemical dilatometry. Outperforming PVdF, WL endows graphite with extensive surface coverage by the binding agent, dramatically reducing irreversible decomposition of the electrolyte (SEI formation) on graphite. Consequently, the WL-based graphite anode delivers the highest initial coulombic efficiency (CE) of 92% and remarkable long cyclic stability with a high capacity retention of 332.7 mAh/g, compared to the PVdF- and carboxymethyl cellulose (CMC)-based ones. Moreover, WL is also compatible with Li4Ti5O12, endowing it with more stable cycling behavior than that of the counterparts prepared with both PVdF and even CMC. Our described WL represents an appealing "green" alternative for PVdF in manufacturing sustainable and ecofriendly energy storage devices.
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Affiliation(s)
- Ranehipura Dewage Lahiru Sandaruwan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, P. R. China
| | - Ryuji Kuramoto
- Osaka Electrochemical Laboratory Co. Ltd., 2-73-1 Yagumohigashi, Moriguchi, Osaka 570-0021, Japan
| | - Boyu Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, P. R. China
| | - Shunchao Ma
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Hongyu Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, P. R. China
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4
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Qin Y, Lyu Y, Chen M, Lu Y, Qi P, Wu H, Sheng Z, Gan X, Chen Z, Tang Y. Nitrogen-doped Ni2P/Ni12P5/Ni3S2 three-phase heterostructure arrays with ultrahigh areal capacitance for high-performance asymmetric supercapacitor. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139059] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Norizan MN, Moklis MH, Ngah Demon SZ, Halim NA, Samsuri A, Mohamad IS, Knight VF, Abdullah N. Carbon nanotubes: functionalisation and their application in chemical sensors. RSC Adv 2020; 10:43704-43732. [PMID: 35519676 PMCID: PMC9058486 DOI: 10.1039/d0ra09438b] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 11/23/2020] [Indexed: 01/08/2023] Open
Abstract
Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices. However, poor solubility in aqueous and organic solvents has hindered the utilisation and applications of carbon nanotubes. As studies progressed, the methodology for CNTs dispersion was established. The current state of research in CNTs either single wall or multiwall/polymer nanocomposites has been reviewed in context with the various types of functionalisation presently employed. Functionalised CNTs have been playing an increasingly central role in the research, development, and application of carbon nanotube-based nanomaterials and systems. The extremely high surface-to-volume ratio, geometry, and hollow structure of nanomaterials are ideal for the adsorption of gas molecules. This offers great potential applications, such as in gas sensor devices working at room temperature. Particularly, the advent of CNTs has fuelled the invention of CNT-based gas sensors which are very sensitive to the surrounding environment. The presence of O2, NH3, NO2 gases and many other chemicals and molecules can either donate or accept electrons, resulting in an alteration of the overall conductivity. Such properties make CNTs ideal for nano-scale gas-sensing materials. Conductive-based devices have already been demonstrated as gas sensors. However, CNTs still have certain limitations for gas sensor application, such as a long recovery time, limited gas detection, and weakness to humidity and other gases. Therefore, the nanocomposites of interest consisting of polymer and CNTs have received a great deal of attention for gas-sensing application due to higher sensitivity over a wide range of gas concentrations at room temperature compared to only using CNTs and the polymer of interest separately.
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Affiliation(s)
- Mohd Nurazzi Norizan
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Muhammad Harussani Moklis
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Siti Zulaikha Ngah Demon
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Norhana Abdul Halim
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Alinda Samsuri
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Imran Syakir Mohamad
- Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka Hang Tuah Jaya 76100 Durian Tunggal Melaka Malaysia
| | - Victor Feizal Knight
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
| | - Norli Abdullah
- Department of Chemistry and Biology, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia Kem Perdana Sungai Besi 57000 Kuala Lumpur Malaysia
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Peng JD, Wu YT, Yeh MH, Kuo FY, Vittal R, Ho KC. Transparent Cobalt Selenide/Graphene Counter Electrode for Efficient Dye-Sensitized Solar Cells with Co 2+/ 3+-Based Redox Couple. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44597-44607. [PMID: 32894678 DOI: 10.1021/acsami.0c08220] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this study, we demonstrate a facile, one-pot, and low-temperature (∼85 °C) chemical bath method for the preparation of a composite of cobalt selenide/graphene (Co0.85Se/Gr) as the electrocatalyst for the counter electrode (CE) of dye-sensitized solar cells (DSSCs) with a cobalt-based electrolyte. The Co0.85Se/Gr composite film was envisaged to have the advantages of both components, that is, the high electrochemical surface area of Co0.85Se and the straight paths for electron transfer from Gr. The DSSCs with Co0.85Se/Gr exhibited a power conversion efficiency (η) of 11.26%. According to the results of the rotating disk electrode, the film of Co0.85Se/Gr showed a high electrocatalytic surface area (Ae) and an extremely large intrinsic heterogeneous rate constant (k0). Furthermore, the composite film of Co0.85Se/Gr exhibits a high transparency in the wavelength region of 400-800 nm (>82%), which implied that the corresponding electrode shall be a potential CE in rear-side illuminated DSSCs. The photovoltaic parameters of the DSSCs with Pt, Co0.85Se, Gr, and Co0.85Se/Gr were obtained for rear-side illumination and additionally for front- and rear-side illuminations (AM 1.5, 100 mW/cm2) using different electrolytes. As the cobalt-based electrolyte of [Co(bpy)3]2+/3+ exhibited a low light absorption and low overpotential for dye regeneration, a rear-side illuminated DSSC with a cobalt-based electrolyte showed the highest efficiency of 9.43 ± 0.02%, which is greater than that of the DSSC with an I-/I3--based electrolyte (η = 7.63 ± 0.04%).
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Affiliation(s)
- Jia-De Peng
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ting Wu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Min-Hsin Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Fang-Yu Kuo
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - R Vittal
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kuo-Chuan Ho
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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7
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Huang J, Qian X, Yang J, Niu Y, Xu C, Hou L. Construction of Pt-free electrocatalysts based on hierarchical CoS2/N-doped C@Co-WS2 yolk-shell nano-polyhedrons for dye-sensitized solar cells. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135949] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Arbab AA, Ali M, Memon AA, Sun KC, Choi BJ, Jeong SH. An all carbon dye sensitized solar cell: A sustainable and low-cost design for metal free wearable solar cell devices. J Colloid Interface Sci 2020; 569:386-401. [PMID: 32126351 DOI: 10.1016/j.jcis.2020.02.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 11/26/2022]
Abstract
Lightweight carbon electrodes are the new candidates for photovoltaic devices due to their temperature resistivity, ease of fabrication, and skin comfortability. Herein, a sustainable and facile strategy has been proposed for metal free all carbon dye sensitized solar cell (C-DSSC), assembled by stacking carbon front electrode (CFE) and carbon counter electrode (CCE). The CFE demonstrated adequate light transmittance (70-50%) while maintaining efficient photon absorption and charge separation mechanism due to dye coated TiO2 nanorods (P25-R). The graphene dip coated carbon counter electrode (Gr@CCE) possesses remarkable electro catalytic activity towards I3-/I- redox couple with low charge transfer resistance (RCT = 0.79 Ω). The sustainable design of C-DSSC attained ~6 ± 0.5% efficiency with high photocurrent density of 18.835 mA. cm-2. The superior performance of C-DSSC is accredited to its improved charge mobility, low internal resistance, and better interfacial electrode contact. The thickness of C-DSSC is ≤3 mm eliminates the need for rigid glass in DSSC.
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Affiliation(s)
- Alvira Ayoub Arbab
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea
| | - Mumtaz Ali
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea
| | - Anam Ali Memon
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea; Department of Textile Engineering, Mehran University of Engineering and Technology, Pakistan
| | - Kyung Chul Sun
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea
| | - Bum Jin Choi
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea
| | - Sung Hoon Jeong
- Department of Organic and Nano Engineering, Hanyang University, Seoul, South Korea.
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9
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Suragtkhuu S, Tserendavag O, Vandandoo U, Bati ASR, Bat-Erdene M, Shapter JG, Batmunkh M, Davaasambuu S. Efficiency and stability enhancement of perovskite solar cells using reduced graphene oxide derived from earth-abundant natural graphite. RSC Adv 2020; 10:9133-9139. [PMID: 35496556 PMCID: PMC9050030 DOI: 10.1039/d0ra01423k] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 02/26/2020] [Indexed: 11/21/2022] Open
Abstract
Graphene – two-dimensional (2D) sheets of carbon atoms linked in a honeycomb pattern – has unique properties that exhibit great promise for various applications including solar cells. Herein we prepared two-dimensional (2D) reduced graphene oxide (rGO) nanosheets from naturally abundant graphite flakes (obtained from Tuv aimag in Mongolia) using solution processed chemical oxidation and thermal reduction methods. As a proof of concept, we used our rGO as a hole transporting material (HTM) in perovskite solar cells (PSCs). Promisingly, the use of rGO in the hole transporting layer (HTL) not only enhanced the photovoltaic efficiency of PSCs, but also improved the device stability. In particular, the best performing PSC employing rGO nanosheets exhibited a power conversion efficiency (PCE) of up to 18.13%, while the control device without rGO delivered a maximum efficiency of 17.26%. The present work demonstrates the possibilities for solving PSC issues (stability) using nanomaterials derived from naturally abundant graphite sources. Solution processed reduced graphene oxide nanosheets have been prepared from naturally abundant graphite flakes and used to enhance the efficiency and stability of perovskite solar cells.![]()
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Affiliation(s)
- Selengesuren Suragtkhuu
- Department of Chemistry
- School of Arts and Sciences
- National University of Mongolia
- Ulaanbaatar 14200
- Mongolia
| | - Odonchimeg Tserendavag
- Department of Chemistry
- School of Arts and Sciences
- National University of Mongolia
- Ulaanbaatar 14200
- Mongolia
| | - Ulziibayar Vandandoo
- School of Applied Sciences
- Mongolian University of Science and Technology
- Ulaanbaatar 14191
- Mongolia
- Institute of Mathematics and Digital Technology
| | - Abdulaziz S. R. Bati
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Munkhjargal Bat-Erdene
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Joseph G. Shapter
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Munkhbayar Batmunkh
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
- Centre for Clean Environment and Energy
| | - Sarangerel Davaasambuu
- Department of Chemistry
- School of Arts and Sciences
- National University of Mongolia
- Ulaanbaatar 14200
- Mongolia
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10
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Yang J, Niu Y, Huang J, Liu L, Qian X. N-doped C/CoSe2@Co–FeSe2 yolk-shell nano polyhedron as superior counter electrode catalyst for high-efficiency Pt-free dye-sensitized solar cell. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135333] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Chen M, Wang GC, Yang WQ, Yuan ZY, Qian X, Xu JQ, Huang ZY, Ding AX. Enhanced Synergetic Catalytic Effect of Mo 2C/NCNTs@Co Heterostructures in Dye-Sensitized Solar Cells: Fine-Tuned Energy Level Alignment and Efficient Charge Transfer Behavior. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42156-42171. [PMID: 31633911 DOI: 10.1021/acsami.9b14316] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A highly efficient and stable electrocatalyst with the novel heterostructure of Co-embedded and N-doped carbon nanotubes supported Mo2C nanoparticles (Mo2C/NCNTs@Co) is creatively constructed by adopting the one-step metal catalyzed carbonization-nitridation strategy. Systematic characterizations and density functional theory (DFT) calculations reveal the advanced structural and electronic properties of Mo2C/NCNTs@Co heterostructure, in which the Co-embedded and N-doped CNTs with tunable diameters present electron-donating effect and the work function is correspondingly regulated from 4.91 to 4.52 eV, and the size-controlled Mo2C nanoparticles exhibit Pt-like 4d electronic structure and the well matched work function (4.85 eV) with I-/I3- redox couples (4.90 eV). As a result, the conductive NCNTs@Co substrate with fine-tuned energy level alignment accelerates the electron transportation and the electron migration from NCNTs@Co to Mo2C, and the active Mo2C shows high affinity for I3- adsorption and high charge transfer ability for I3- reduction, which reach a decent synergetic catalytic effect in Mo2C/NCNTs@Co heterostructure. The DSSC with Mo2C/NCNTs@Co CE achieves a high photoelectric conversion efficiency of 8.82% and exceptional electrochemical stability with a residual efficiency of 7.95% after continuous illumination of 200 h, better than Pt-based cell. Moreover, the synergistic catalytic mechanism toward I3- reduction is comprehensively studied on the basis of structure-activity correlation and DFT calculations. The advanced heterostructure engineering and electronic modulation provide a new design principle to develop the efficient, stable, and economic hybrid catalysts in relevant electrocatalytic fields.
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Affiliation(s)
- Ming Chen
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) , Nankai University , Tianjin 300071 , China
| | - Gui-Chang Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) , Nankai University , Tianjin 300071 , China
- Tianjin key Lab and Molecule-based Material Chemistry and College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Wen-Qi Yang
- Tianjin key Lab and Molecule-based Material Chemistry and College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Zhong-Yong Yuan
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) , Nankai University , Tianjin 300071 , China
- School of Materials Science and Engineering , Nankai University , Tianjin 300071 , China
| | - Xing Qian
- College of Chemical Engineering , Fuzhou University , Fuzhou 350116 , China
| | - Jun-Qi Xu
- Department of Physics and Electronic Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Zhong-Yuan Huang
- Department of Chemistry , Xavier University of Louisiana , New Orleans , Louisiana 70125 , United States
| | - Ai-Xiang Ding
- Department of Biomedical Engineering , Case Western Reserve University , Cleveland , Ohio 44106 , United States
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12
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Recent advances in cobalt-, nickel-, and iron-based chalcogen compounds as counter electrodes in dye-sensitized solar cells. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63361-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Yu X, Jiang J. Phosphate microbial mineralization removes nickel ions from electroplating wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 245:447-453. [PMID: 31170633 DOI: 10.1016/j.jenvman.2019.05.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Nickel ions in electroplating wastewater can be removed by the bio-mineralization method. Bacillus subtilis can produce alkaline phosphatase, which hydrolyzes organophosphate monoesters and produces phosphate ions. Fourier-transform infrared spectroscopy (FTIR) showed that the precipitated material contains phosphate ions. X-ray diffraction (XRD) showed that nickel ions in electroplating wastewater react with Bacillus subtilis and organophosphate monoesters to obtain nickel phosphate octahydrate (Ni3(PO4)2·8H2O). The removal efficiency of nickel ions could reach 76.41% with the optimum content of the organophosphate monoester (0.02 mol), Bacillus subtilis powder (2 g), pH (6), standing time (36 h), and reaction temperature (25 °C) in the medium solution (100 mL). The average particle size of Ni3(PO4)2·8H2O was 80.51 nm, which was calculated by the Scherrer formula. The Lorentz-Transmission Electron Microscope (L-TEM) further showed that Ni3(PO4)2·8H2O was composed of clusters of irregular nanoparticles, and the individual particle size was in the range of 40-90 nm. The TGA curve shows that the mass loss of crystal water was 25.45%, which was close to the theoretical total mass loss of 28.24% in bio-Ni3(PO4)2·8H2O.
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Affiliation(s)
- Xiaoniu Yu
- School of Environment, Tsinghua University, Beijing, 100084, China; College of Architecture and Civil Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Jianguo Jiang
- School of Environment, Tsinghua University, Beijing, 100084, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Beijing, 100084, China.
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14
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Nanostructured nickel phosphide as an efficient photocatalyst: Effect of phase on physical properties and dye degradation. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.06.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Tang B, Yu H, Huang W, Sun Y, Li X, Li S, Ma T. Three-dimensional graphene networks and RGO-based counter electrode for DSSCs. RSC Adv 2019; 9:15678-15685. [PMID: 35521385 PMCID: PMC9064301 DOI: 10.1039/c9ra02792k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 05/04/2019] [Indexed: 11/21/2022] Open
Abstract
Graphene is considered to be a potential replacement for the traditional Pt counter electrode (CE) in dye-sensitized solar cells (DSSCs). Besides a high electron transport ability, a close contact between the CE and electrolyte is crucial to its outstanding catalytic activity for the I3 -/I redox reaction. In this study, reduced graphene oxide (RGO) and three-dimensional graphene networks (3DGNs) were used to fabricate the CE, and the graphene-based CE endowed the resulting DSSC with excellent photovoltaic performance features. The high quality and continuous structure of the 3DGNs provided a channel amenable to fast transport of electrons, while the RGO afforded a close contact at the interface between the graphene basal plane and electrolyte. The obtained energy conversion efficiency (η) was closely related to the mass fraction and reduction degree of the RGO that was used. Corresponding optimization yielded, for the DSSCs based on the 3DGN-RGO CE, a value of η as high as 9.79%, comparable to that of the device using a Pt CE and hence implying promising prospects for the as-prepared CE.
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Affiliation(s)
- Bo Tang
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
| | - Haogang Yu
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
| | - Weiqiu Huang
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
| | - Yunfei Sun
- College of Electronic and Information Engineering, Suzhou University of Sciences and Technology Suzhou Jiangsu 215009 People's Republic of China
| | - Xufei Li
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
| | - Sen Li
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
| | - Tingting Ma
- Jiangsu Key Laboratory of Oil and Gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China
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16
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Zhang H, Fang W, Wang W, Qian N, Ji X. Highly Efficient Zn-Cu-In-Se Quantum Dot-Sensitized Solar Cells through Surface Capping with Ascorbic Acid. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6927-6936. [PMID: 30675780 DOI: 10.1021/acsami.8b18033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The balance between band structure, composition, and defect is essential for improving the optoelectronic properties of ternary and quaternary quantum dots and the corresponding photovoltaic performance. In this work, ascorbic acid (AA) as capping ligand is introduced into the reaction system to prepare green Zn-Cu-In-Se (ZCISe) quantum dots. Results show that the addition of AA can increase the Zn content while decrease the In content, resulting in enlarged band gap, high conduction band energy level, and suppressed charge recombination. When AA/Cu ratio is 1, the quantum dots possess the largest band gap of 1.49 eV and the assembled quantum dot-sensitized solar cells exhibit superior photovoltaic performance with ∼17% increment mainly contributed by the dramatically increased current density. The new record efficiencies of 10.44 and 13.85% are obtained from the ZCISe cells assembled with brass and titanium mesh-based counter electrodes, respectively.
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Affiliation(s)
- Hua Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Wenjuan Fang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Wenran Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Nisheng Qian
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Xiaohe Ji
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
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Zheng J, Guo Z, Zhou W, Zhang R, Wang J, Fan Y, Zhang R, Sun Z. Synergistic effect of Ni and Fe in Fe-doped NiS2 counter electrode for dye-sensitized solar cells: Experimental and DFT studies. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.138] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Shaikh JS, Shaikh NS, Mali SS, Patil JV, Pawar KK, Kanjanaboos P, Hong CK, Kim JH, Patil PS. Nanoarchitectures in dye-sensitized solar cells: metal oxides, oxide perovskites and carbon-based materials. NANOSCALE 2018; 10:4987-5034. [PMID: 29488524 DOI: 10.1039/c7nr08350e] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dye-sensitized solar cells (DSSCs) have aroused great interest and been regarded as a potential renewable energy resource among the third-generation solar cell technologies to fulfill the 21st century global energy demand. DSSCs have notable advantages such as low cost, easy fabrication process and being eco-friendly in nature. The progress of DSSCs over the last 20 years has been nearly constant due to some limitations, like poor long-term stability, narrow absorption spectrum, charge carrier transportation and collection losses and poor charge transfer mechanism for regeneration of dye molecules. The main challenge for the scientific community is to improve the performance of DSSCs by using different approaches, like finding new electrode materials with suitable nanoarchitectures, dyes in composition with promising semiconductors and metal quantum dot fluorescent dyes, and cost-effective hole transporting materials (HTMs). This review focuses on DSSC photo-physics, which includes charge separation, effective transportation, collection and recombination processes. Different nanostructured materials, including metal oxides, oxide perovskites and carbon-based composites, have been studied for photoanodes, and counter electrodes, which are crucial to achieve DSSC devices with higher efficiency and better stability.
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Affiliation(s)
- Jasmin S Shaikh
- Thin film materials laboratory, Department of Physics, Shivaji University, Kolhapur 416004, India.
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Zhang X, Zhang H, Wang X, Zhou X. Enhanced electrocatalytic performance of nickel diselenide grown on graphene toward the reduction of triiodide redox couples. RSC Adv 2018; 8:28131-28138. [PMID: 35542733 PMCID: PMC9084294 DOI: 10.1039/c8ra05167d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
The promising activity of nickel diselenide (NiSe2) towards electrocatalysis has made it especially attractive in energy conversion fields. However, NiSe2 with high electrocatalytic performance always requires complicated fabrication or expensive conductive polymers, resulting in the scale-up still being challenging. Herein, we introduce a simple and cost-effective synthesis of NiSe2 dispersed on the surface of graphene (NiSe2/RGO NPs). NiSe2/RGO NPs exhibited enhanced electrocatalytic performance and long-term stability for the reduction reaction of triiodide redox couples in dye-sensitized solar cells (DSSCs). Leveraging the advantageous features, the DSSC fabricated with NiSe2/RGO NPs as CE had a smaller charge-transfer resistance (Rct) value and higher short-circuit current density and fill factor than naked NiSe2 NPs. Additionally, NiSe2/RGO NPs achieved a PCE of 7.76%, higher than that of pure NiSe2 (6.51%) and even exceeding that of Pt (7.56%). These prominent features demonstrated that the NiSe2/RGO NPs in this work are a promising cheap and efficient electrocatalyst to replace state-of-the-art Pt. The promising activity of nickel diselenide (NiSe2) towards electrocatalysis has made it especially attractive in energy conversion fields.![]()
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Affiliation(s)
- Xiao Zhang
- Center for Aircraft Fire and Emergency
- Civil Aviation University of China
- Tianjin 300300
- P. R. China
| | - Haijun Zhang
- Center for Aircraft Fire and Emergency
- Civil Aviation University of China
- Tianjin 300300
- P. R. China
| | - Xingyu Wang
- Center for Aircraft Fire and Emergency
- Civil Aviation University of China
- Tianjin 300300
- P. R. China
| | - Xiaomeng Zhou
- Center for Aircraft Fire and Emergency
- Civil Aviation University of China
- Tianjin 300300
- P. R. China
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