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Wang X, Wang W, Yao J, Zhang Q, Gao X, Lin C, Yang Q, Zuo X, Jin S, Li G. Spherical Fe 7S 8@rGO nanoflowers as electrodes with high electrocatalytic performance in dye-sensitized solar cells. RSC Adv 2023; 13:17428-17435. [PMID: 37304780 PMCID: PMC10251488 DOI: 10.1039/d3ra02457a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/01/2023] [Indexed: 06/13/2023] Open
Abstract
Dye-sensitized solar cells (DSSCs) can directly convert solar energy into electricity, and have aroused great research interest from researchers. Here, the spherical Fe7S8@rGO nanocomposites were expediently fabricated by facile methods, and applied in DSSCs as counter electrodes (CEs). The morphological features show the porous structure of Fe7S8@rGO, and it is beneficial to enhance the permeability of ions. Reduced graphene oxide (rGO) has a large specific surface area and good electrical conductivity, shortening the electron transfer path. The presence of rGO promotes the catalytic reduction of I3- ions to I- ions and reduces the charge transfer resistance (Rct). The experimental findings show that the power conversion efficiency (PCE) of Fe7S8@rGO as CEs for DSSCs can reach 8.40% (20 wt% for rGO), significantly higher than Fe7S8 (7.60%) and Pt (7.69%). Therefore, Fe7S8@rGO nanocomposite is expected to be an efficient and cost-effective CE material for DSSCs.
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Affiliation(s)
- Xiaoyu Wang
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
| | - Wen Wang
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
| | - Jixin Yao
- Anhui Province Key Laboratory of Simulation and Design for Electronic Information System, Universities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, Hefei Normal University Hefei 230601 People's Republic of China
| | - Qingxiao Zhang
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
| | - Xin Gao
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
| | - Changcheng Lin
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
| | - Qun Yang
- School of Physics and Optoelectronic Engineering, Anhui University Hefei 230601 People's Republic of China
| | - Xueqin Zuo
- School of Physics and Optoelectronic Engineering, Anhui University Hefei 230601 People's Republic of China
| | - Shaowei Jin
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
- School of Physics and Optoelectronic Engineering, Anhui University Hefei 230601 People's Republic of China
| | - Guang Li
- School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Devices, Institute of Physical Science and Information Technology, Anhui University Hefei 230601 People's Republic of China
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Ghozza MH, Yahia IS, Hussien MSA. Structure, magnetic, and photocatalysis of La 0.7Sr 0.3MO 3 (M = Mn, Co, and Fe) perovskite nanoparticles: Novel photocatalytic materials. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:61106-61122. [PMID: 37052839 PMCID: PMC10163091 DOI: 10.1007/s11356-023-26411-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/07/2023] [Indexed: 05/08/2023]
Abstract
The present study, La0.7Sr0.3MO3 (M = Mn-, Co-, and Fe-), perovskite, has successfully been synthesized via co-precipitation and sol-gel auto-combustion. XRD, SEM, and EDX characterized the prepared samples. XRD and SEM showed that the as-prepared La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 have multiphase. La0.7Sr0.3FeO3, in comparison, is nanosized, has a single-phase perovskite, and has a rather homogenous particle size distribution. Additionally, EDX mapping analysis shows that all pieces are distributed uniformly. According to X-ray diffractometer results, all calcined powders contain 100% LSF, more than 15% perovskite phase of LSC, 47% LSM, and other secondary phases, such as cobalt oxide. Aِt room temperature and magnetic field of ± 20 kG, La0.7Sr0.3MnO3 exhibited weak ferromagnetic behavior in a low magnetic field, whereas diamagnetic behavior was seen in a high magnetic field. La0.7Sr0.3FeO3 samples behave as strong ferromagnetic. On the contrary, the photodegradation of La0.7Sr0.3MnO3 is 99% compared to 75% and 91% for other samples under UVC lights of wavelength = 254 nm. The degradation rate for La0.7Sr0.3MnO3 is 0.179 higher, about 3.25 and 2.23, than the other samples. A La0.7Sr0.3MnO3 nanocomposite performs as a photocatalyst to enhance the efficiency of methylene blue photodegradation. This study boosts good UVC photocatalysts with high efficiency for different kinds of dyes. Hence, the catalyst possessed high stability and efficiency for continuous wastewater treatment.
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Affiliation(s)
- Mohamed H Ghozza
- Basic Science Department, Marg High Institute of Engineering and Modern Technology, Cairo, Egypt
| | - Ibrahim S Yahia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
- Green Research Laboratory (GRL), Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
| | - Mai S A Hussien
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt.
- Green Research Laboratory (GRL), Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt.
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt.
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High-Efficiency of Bi-Functional-Based Perovskite Nanocomposite for Oxygen Evolution and Oxygen Reduction Reaction: An Overview. MATERIALS 2021; 14:ma14112976. [PMID: 34072851 PMCID: PMC8198805 DOI: 10.3390/ma14112976] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 01/12/2023]
Abstract
High efficient, low-cost and environmentally friendly-natured bi-functional-based perovskite electrode catalysts (BFPEC) are receiving increasing attention for oxygen reduction/oxygen evolution reaction (ORR/OER), playing an important role in the electrochemical energy conversion process using fuel cells and rechargeable batteries. Herein, we highlighted the different kinds of synthesis routes, morphological studies and electrode catalysts with A-site and B-site substitution co-substitution, generating oxygen vacancies studies for boosting ORR and OER activities. However, perovskite is a novel type of oxide family, which shows the state-of-art electrocatalytic performances in energy storage device applications. In this review article, we go through different types of BFPECs that have received massive appreciation and various strategies to promote their electrocatalytic activities (ORR/OER). Based on these various properties and their applications of BFPEC for ORR/OER, the general mechanism, catalytic performance and future outlook of these electrode catalysts have also been discussed.
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Choi GH, Kim DJ, Moon J, Kim JH, Park JT. High-order diffraction grating as light harvesters for solar energy conversion. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114490] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sahare S, Ghoderao P, Khan SB, Chan Y, Lee SL. Recent progress in hybrid perovskite solar cells through scanning tunneling microscopy and spectroscopy. NANOSCALE 2020; 12:15970-15992. [PMID: 32761037 DOI: 10.1039/d0nr03499a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Currently, sustainable renewable energy sources are urgently required to fulfill the cumulative energy needs of the world's 7.8 billion population, since the conventional coal and fossil fuels will be exhausted soon. Photovoltaic devices are a direct and efficient means to produce a huge amount of energy to meet these energy targets. In particular, hybrid-perovskite-based photovoltaic devices merit special attention not only due to their exceptional efficiency for generating appreciable energy but also their tunable band gaps and the ease of device fabrication. However, the commercialization of such devices suffers from the instability of the compositional materials. The cause of instability is the perovskite's structure and its morphology at the sub-molecular level; thereby revealing and eliminating these instabilities are a striking challenge. To address this issue, scanning tunneling microscopy/spectroscopy (STM/STS) presents a comprehensive method to allow the visualization of the morphology and electronic structure of materials at atomic-level resolution. Here, we review the recent developments of perovskite-based solar cells (PSCs), the STM/STS analysis of photoactive halide/hybrid and oxide materials, and the real-time STM/STS investigation of electronic structures with defects and traps that are believed to mainly affect device performances. The detailed STM/STS analysis can facilitate a better understanding of the properties of materials at the nanoscale. This informative study may hold great promise to advance the development of stable PSCs under atmospheric conditions.
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Affiliation(s)
- Sanjay Sahare
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China. and Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronics Engineering, Shenzhen University, Shenzhen, Guangdong, 518060 China
| | - Prachi Ghoderao
- Department of Applied Physics, Defence Institute of Advanced Technology, Pune, 411025 India
| | - Sadaf Bashir Khan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China. and Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronics Engineering, Shenzhen University, Shenzhen, Guangdong, 518060 China
| | - Yue Chan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China.
| | - Shern-Long Lee
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China.
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Jiang S, Cheong JY, Nam JS, Kim ID, Agarwal S, Greiner A. High-density Fibrous Polyimide Sponges with Superior Mechanical and Thermal Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19006-19014. [PMID: 32216283 DOI: 10.1021/acsami.0c02004] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A relatively low compressive strength significantly limits the practical application of sponges made from electrospun fibers because of an ultralow density <10 mg/cm3. To solve this problem, fibrous polyimide sponges with high density (HDPISG) were prepared using a "self-gluing" concept. The HDPISG have a density of up to 280 mg/cm3 and porosity >80%, and showed good breathability. The compressive strength increased significantly as the sponge densities increased. The HDPISG with a density of 280 mg/cm3 has the highest compressive strength of 5190 and 35,900 kPa under 50 and 80% compression, respectively. The small HDPISG can even hold weights more than ten thousand times of the weight of the sponge. The HDPISG also possess excellent mechanical properties after thermal treatments and no loss of compressive strength can be seen after heating at 300 °C for 30 h. Further study indicates that the HDPISG can maintain their main shape after carbonization.
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Affiliation(s)
- Shaohua Jiang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jun Young Cheong
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Jong Seok Nam
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Seema Agarwal
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
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Wasim Khan M, Zuo X, Yang Q, Tang H, Rehman KMU, Wu M, Li G. Quantum dot embedded N-doped functionalized multiwall carbon nanotubes boost the short-circuit current of Ru(ii) based dye-sensitized solar cells. NANOSCALE 2020; 12:1046-1060. [PMID: 31845950 DOI: 10.1039/c9nr09227g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Here, we report zinc sulfide quantum dots, ZnS(QDs), moored on N-doped functionalized multiwall carbon nanotubes (MWCNTs) wrapped with reduced graphene oxide (rGO). The MWCNTs have a tangled network, a particular surface area, and a distinctive hollow structure that may be suitable for use as a counter electrode (CE) material. A ZnS@N.f-MWCNTs@rGO composite as the CE on a fluorine-doped tin oxide substrate in a dye-sensitized solar cell (DSSC) was fabricated using a doctor blade technique. The electrochemical performance showed that at the electrolyte/CE interface, the ZnS(QDs) and N-doped functionalized MWCNTs wrapped with rGO (ZnS@N.f-MWCNTs@rGO) electrode has a lower transfer charge resistance (Rct) and a greater catalytic capacity than naked ZnS(QDs). A power conversion efficiency (PCE) of 9.4% was attained for this DSSC gadget, which is higher than that of a DSSC gadget utilizing ZnS(QDs), ZnS@N.f-MWCNTs, ZnS@rGO and Pt. Also, the DSSC device using ZnS@N.f-MWCNTs@rGO had a fill factor (FF) that was better than the other counter electrodes. The cyclic voltammetry and electrochemical impedance spectra (EIS) electron transfer measurements showed that ZnS@N.f-MWCNTs@rGO films can provide fast electron transfer from the electrolyte to the CE and great electrocatalytic activity to reduce triiodide to a CE based on ZnS@N.f-MWCNTs@rGO in the DSSC.
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Affiliation(s)
- Muhammad Wasim Khan
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Xueqin Zuo
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Qun Yang
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China
| | - Huaibao Tang
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China
| | - Khalid Mehmood Ur Rehman
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Department of Physics, Riphah International University, Faisalabad Campus, Pakistan
| | - Mingzai Wu
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China
| | - Guang Li
- School of Physics and Materials Science, Anhui University, Hefei 230601, P.R. China and Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230601, P.R. China and Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, P.R. China. and Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P.R. China
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