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Enhanced Efficiency of Dye-Sensitized Solar Cells Based on Polymer-Assisted Dispersion of Platinum Nanoparticles/Carbon Nanotubes Nanohybrid Films as FTO-Free Counter Electrodes. Polymers (Basel) 2021; 13:polym13183103. [PMID: 34578004 PMCID: PMC8469940 DOI: 10.3390/polym13183103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 11/26/2022] Open
Abstract
In this study, polymer-assisted dispersants are used to stabilize the nanohybrids of platinum nanoparticles (PtNPs)/carbon nanotubes (CNTs) through non-covalent bond forces. These dispersants aim to replace the florine-doped tin oxide (FTO) glass in traditional dye-sensitized solar cells (DSSCs) as counter electrodes. The large specific surface area, high conductivity, and redox potential of PtNPs/CNT nanohybrids are used as the basis to utilize them as the counter electrode material to fabricate a dye-sensitized solar cell. The conductivity results indicate that the resistance of the PtNP/CNT nanohybrid film can be reduced to 7.25 Ω/sq. When carbon nanotubes are mixed with platinum nanoparticles at a weight ratio of 5/1, the photoelectric conversion efficiency of DSSCs can reach 6.28%. When using the FTO-containing substrate as the counter electrode, its conversion efficiency indicates that the micro-/nano-hybrid material formed by PtNPs/CNTs also exhibits an excellent photoelectric conversion efficiency (8.45%) on the traditional FTO substrate. Further, a large-area dye-sensitive cell is fabricated, showing that an 8 cm × 8 cm cell has a conversion efficiency of 7.95%. Therefore, the traditional Pt counter electrode can be replaced with a PtNP/CNT nanohybrid film, which both provides dye-sensitive cells with a high photoelectric conversion efficiency and reduces costs.
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Wu K, Wu Y, Fu P, Yang D, Ruan B, Wu M, Wu R. Composites of Vanadium (III) Oxide (V 2O 3) Incorporating with Amorphous C as Pt-Free Counter Electrodes for Low-Cost and High-Performance Dye-Sensitized Solar Cells. ACS OMEGA 2021; 6:11183-11191. [PMID: 34056273 PMCID: PMC8153909 DOI: 10.1021/acsomega.0c05880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
To replace precious Pt-based counter electrodes (CEs) with a low-cost Pt-free catalyst of CEs is still a motivating hotspot to decrease the fabrication cost of dye-sensitized solar cells (DSSCs). Herein, four different V2O3@C composite catalysts were synthesized by pyrolysis of a precursor under N2 flow at 1100 °C and further served as catalytic materials of CEs for the encapsulation of DSSCs. The precursors of V2O3@C composites have been prepared via a sol-gel method using different proportions of V2O5 with soluble starch in a H2O2 solution. Power conversion efficiencies (PCEs) of 3.59, 4.79, 5.15, and 5.06% were obtained from different V2O3@C composites, with soluble starch-to-V2O5 mass ratios (S/V) of 1:2, 1:1, 2:1, and 4:1, respectively, as CEs to reduce iodide/triiodide in DSSCs. The improvement of electrode performance is due to the combined effects on the increased specific surface area and the enhanced conductivity of V2O3@C composite catalysts.
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Affiliation(s)
- Kezhong Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Yingshan Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Pengyuan Fu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Dandan Yang
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Bei Ruan
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Mingxing Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Ruitao Wu
- Hebei Key Laboratory of Inorganic
Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
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Guo Q, Chen C, Xing F, Shi W, Meng J, Wan H, Guan G. Constructing Hierarchically Porous N-Doped Carbons Derived from Poly(ionic liquids) with the Multifunctional Fe-Based Template for CO 2 Adsorption. ACS OMEGA 2021; 6:7186-7198. [PMID: 33748633 PMCID: PMC7970570 DOI: 10.1021/acsomega.1c00419] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Nitrogen-doped hierarchical porous carbons with a rich pore structure were prepared via direct carbonization of the poly(ionic liquid) (PIL)/potassium ferricyanide compound. Thereinto, the bisvinylimidazolium-based PIL was a desirable carbon source, and potassium ferricyanide as a multifunctional Fe-based template, could not only serve as the pore-forming agent, including metallic components (Fe and Fe3C), potassium ions (etching carbon framework during carbonization), and gas generated during the pyrolysis process, but also introduce the N atoms to porous carbons, which were in favor of CO2 capture. Moreover, the hierarchically porous carbon NDPC-1-800 (NDPC, nitrogen-doped porous carbon) had taken advantage of the highest specific surface area, exhibiting an excellent CO2 adsorption capacity and selectivity compared with NDC-800 (NDC, nitrogen-doped carbon) directly carbonized from the pure PIL. Furthermore, its hierarchical porous architectures played an important part in the process of CO2 capture, which was described briefly as follows: the synergistic effect of mesopores and micropores could accelerate the CO2 molecules' transportation and storage. Meanwhile, the appropriate microporous size distribution of NDPC-1-800 was conducive to enhancing CO2/N2 selectivity. This study was intended to open up a new pathway for designing N-doped porous carbons combining both PILs and the multifunctional Fe-based template potassium ferricyanide with wonderful gas adsorption and separation performance.
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Affiliation(s)
- Qirui Guo
- Jiangsu
Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental
Protection, School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, P. R. China
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, Jiangsu Collaborative Innovation Center for
Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Chong Chen
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, Jiangsu Collaborative Innovation Center for
Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Fangcheng Xing
- Jiangsu
Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental
Protection, School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, P. R. China
| | - Weizhong Shi
- Jiangsu
Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental
Protection, School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224007, P. R. China
| | - Jie Meng
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, Jiangsu Collaborative Innovation Center for
Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
- Research
Institute, Sinopec Yangzi Petrochemical
Company, Ltd., Nanjing 210048, P. R. China
| | - Hui Wan
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, Jiangsu Collaborative Innovation Center for
Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Guofeng Guan
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, Jiangsu Collaborative Innovation Center for
Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
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Sarkar FK, Gupta A, Jamatia R, Anal JMH, Pal AK. A green and sustainable approach for the synthesis of 1,5-benzodiazepines and spirooxindoles in one-pot using a MIL-101(Cr) metal–organic framework as a reusable catalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj03176g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Green and efficient protocols for the synthesis of 1,5-benzodiazepines and spirooxindoles were developed utilizing MIL-101(Cr) in SFRC and water as solvent respectively.
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Affiliation(s)
- Fillip Kumar Sarkar
- Department of Chemistry, Centre for Advanced Studies, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Ajay Gupta
- Department of Chemistry, Centre for Advanced Studies, North-Eastern Hill University, Shillong 793022, Meghalaya, India
- Department of Chemistry, St. Joseph's College (Autonomous), #36 Lal Bagh Main Road, Shanti Nagar, Bangaluru 560027, Karnataka, India
| | - Ramen Jamatia
- Department of Chemistry, Rajiv Gandhi University, Rono Hills, Doimukh 791112, Arunachal Pradesh, India
| | - Jasha Momo H. Anal
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, Canal Road, Jammu 180001, India
| | - Amarta Kumar Pal
- Department of Chemistry, Centre for Advanced Studies, North-Eastern Hill University, Shillong 793022, Meghalaya, India
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