scholarly journals Self-Aligned Carbon Nanotube Yarns for Multifunctional Optoelectronic Applications

2016 ◽  
Author(s):  
M. Jasim Uddin ◽  
Glenn Grissom ◽  
Miguel Leal ◽  
Veronica Galvez ◽  
Tarek Trad ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Low Cost ◽  
Structural Level ◽  
Electron Hole ◽  
High Chemical ◽  
Dye Sensitized ◽  
Mesoporous Film ◽  
Maximum Photon ◽  
High Chemical Stability ◽  
Carbon Nanotube Yarns

In this work, the morphology and electrocatalytic features of carbon nanotube yarns at the structural level allow for enhanced photoconversion efficiency. The energy conversion of electron-hole pairs within the carbon nanotube yarn (CNY) due to the functionalization with nanostructured photoactive TiO2 phases is remarkable. A well oriented anatase TiO2 thin layer (approximately 100 nm) forms at the interfaces of CNY and TiO2 mesoporous film when the sample is precoated and annealed at 350°C. Field Emission Scanning Electron Microscopy (FESEM) images show the integrity and homogeneity of the TiO2 surface, which is indicative of the overall durability of the CNY-based dye sensitized solar cell (DSSC); Coating TiO2 on self-aligned carbon nanotube yarns provides several benefits from their high chemical stability, excellent functionality, nontoxicity and relatively low cost. The maximum photon to current conversion efficiency (ηAM1.5) achieved was 3.1%.

Fabrication of textile fabric counter electrodes using activated charcoal doped multi walled carbon nanotube hybrids for dye sensitized solar cells

2016 ◽  
Vol 4 (4) ◽  
pp. 1495-1505 ◽  
Author(s):  
Alvira Ayoub Arbab ◽  
Kyung Chul Sun ◽  
Iftikhar Ali Sahito ◽  
Anam Ali Memon ◽  
Yun Seon Choi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Light Weight ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Multi Walled Carbon Nanotube ◽  
Increasing Demand ◽  
Sensitized Solar Cells ◽  
Textile Fabric

Textile fabric electrodes have attained increasing demand as they offer the benefits of light weight, flexibility, and low cost.

Weavable dye sensitized solar cells exploiting carbon nanotube yarns

2013 ◽  
Vol 102 (20) ◽  
pp. 203902 ◽  
Author(s):  
Josef Velten ◽  
Zharkynay Kuanyshbekova ◽  
Özer Göktepe ◽  
Fatma Göktepe ◽  
Anvar Zakhidov
Keyword(s):  
Solar Cells ◽  
Carbon Nanotube ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Carbon Nanotube Yarns

scholarly journals Preparation and characterization of Fe3O4@SiO2@TiO2–Co/rGO magnetic visible light photocatalyst for water treatment

RSC Advances ◽  
2019 ◽  
Vol 9 (35) ◽  
pp. 20256-20265 ◽  
Author(s):  
Congzhi Fu ◽  
Xijun Liu ◽  
Yuwei Wang ◽  
Li Li ◽  
Zihao Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Water Treatment ◽  
Low Cost ◽  
High Photocatalytic Activity ◽  
High Chemical ◽  
Magnetic Photocatalyst ◽  
Visible Light Photocatalyst ◽  
Application Potential ◽  
High Chemical Stability

With its low cost, high photocatalytic activity, high chemical stability and easy magnetic separation, Fe3O4@SiO2@TiO2–Co/rGO magnetic photocatalyst has a good application potential.

Redistributing Zn ion flux by bifunctional graphitic carbon nitride nanosheets for dendrite-free zinc metal anodes

2021 ◽  
Author(s):  
Lisha Wu ◽  
Ying Zhang ◽  
Ping Shang ◽  
Yanfeng Dong ◽  
Zhong-Shuai Wu
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Carbon Nitride ◽  
Low Cost ◽  
Zinc Ion ◽  
High Chemical ◽  
Free Zinc ◽  
Unlimited Growth ◽  
Carbon Nitride Nanosheets ◽  
High Chemical Stability

Zn metal with high chemical stability and low cost enables aqueous zinc ion batteries (ZIBs) to show promising applications in large-scale energy storage. However, the unlimited growth of Zn dendrites...

Environment-friendly carbon nanotube based flexible electronics for noninvasive and wearable healthcare

2016 ◽  
Vol 4 (42) ◽  
pp. 10061-10068 ◽  
Author(s):  
Toan Dinh ◽  
Hoang-Phuong Phan ◽  
Tuan-Khoa Nguyen ◽  
Afzaal Qamar ◽  
Abu Riduan Md Foisal ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Flexible Electronics ◽  
Low Cost ◽  
Respiratory Monitoring ◽  
Environment Friendly ◽  
Flexible Devices ◽  
Personal Healthcare ◽  
Develop Environment ◽  
Carbon Nanotube Yarns

Carbon nanotube yarns are employed to develop environment-friendly, low cost and lightweight paper-based flexible devices for wearable applications in temperature and respiratory monitoring, and personal healthcare.

3D Wire-Shaped Dye-Sensitized Solar Cells in Solid State Using Carbon Nanotube Yarns with Hybrid Photovoltaic Structure

2014 ◽  
Vol 1 (6) ◽  
pp. 1400075 ◽  
Author(s):  
Jin Yan ◽  
M. Jasim Uddin ◽  
Tarik J. Dickens ◽  
Deborah E. Daramola ◽  
Okenwa I. Okoli
Keyword(s):  
Solar Cells ◽  
Carbon Nanotube ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Carbon Nanotube Yarns

Characterization of Thermal Transport in Carbon Nanotube Yarns

2014 ◽  
Author(s):  
Jianli Wang ◽  
Sisi He ◽  
Jiajian Bao ◽  
Xing Zhang ◽  
Juekuan Yang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Thermal Transport ◽  
Carbon Nanotube Yarns

Ti3C2-MXene/Bismuth Ferrite Nanohybrids for Efficient Degradation of Organic Dye and Colorless Pollutant

2019 ◽  
Author(s):  
Ayesha Tariq ◽  
M. Abdullah Iqbal ◽  
S. Irfan Ali ◽  
Muhammad Z. Iqbal ◽  
Deji Akinwande ◽  
...  
Keyword(s):  
Surface Area ◽  
Low Cost ◽  
Bismuth Ferrite ◽  
Organic Dye ◽  
Two Dimensional ◽  
Electron Hole ◽  
Photocatalytic Application ◽  
Electron Hole Pair ◽  
Pair Generation ◽  
Photocatalytic Applications

<p>Nanohybrids, made up of Bismuth ferrites/Carbon allotropes, are extensively used in photocatalytic applications nowadays. Our work proposes a nanohybrid system composed of Bismuth ferrite nanoparticles with two-dimensional (2D) MXene sheets namely, the BiFeO<sub>3</sub> (BFO)/Ti<sub>3</sub>C<sub>2</sub> (MXene) nanohybrid for enhanced photocatalytic activity. We have fabricated the BFO/MXene nanohybrid using simple and low cost double solvent solvothermal method. The SEM and TEM images show that the BFO nanoparticles were attached onto the MXene surface and in the inter-layers of two-dimensional (2D) MXene sheets. The photocatalytic application is tested for the visible light irradiation which showed the highest efficiency among all pure-BFO based photocatalysts, i.e. 100% degradation in 42 min for organic dye (Congo Red) and colorless aqueous pollutant (acetophenone) in 150 min, respectively. The present BFO-based hybrid system exhibited the large surface area of 147 m<sup>2</sup>g<sup>-1</sup>measured via Brunauer-Emmett-Teller (BET) sorption-desorption technique, and is found to be largest among BFO and its derivatives. Also, the photoluminescence (PL) spectra indicate large electron-hole pair generation. Fast and efficient degradation of organic molecules is supported by both factors; larger surface area and lower electron-hole recombination rate. The BFO/MXene nanohybrid presented here is a highly efficient photocatalyst compared to other nanostructures based on pure BiFeO<sub>3</sub> which makes it a promising candidate for many future applications.</p>

POTENTIAL EVALUATION OF YELLOW COTTON (COCHLOSPERMUM REGIUM) PIGMENTS FOR DYE SENSITIZED SOLAR CELLS APPLICATION

2020 ◽  
pp. 16-21
Author(s):  
PHITCHAPHORN KHAMMEE ◽  
YUWALEE UNPAPROM ◽  
UBONWAN SUBHASAEN ◽  
RAMESHPRABU RAMARAJ
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Plant Materials ◽  
Natural Pigments ◽  
Dye Sensitized ◽  
Study Results ◽  
Sensitized Solar Cells

Recently, dye-sensitized solar cells (DSSC) have concerned significant attention attributable to their material preparation process, architectural and environmental compatibility, also low cost and effective photoelectric conversion efficiency. Therefore, this study aimed to use potential plant materials for DSSC. This research presents the extraction of natural pigments from yellow cotton flowers (Cochlospermum regium). In addition, the natural pigments were revealed that outstanding advantages, including a wide absorption range (visible light), easy extraction method, safe, innocuous pigments, inexpensive, complete biodegradation and ecofriendly. Methanol was used as a solvent extraction for the yellow cotton flower. The chlorophylls and carotenoid pigments extractions were estimated by a UV-visible spectrometer. The chlorophyll-a, chlorophyll-b, and carotenoid yield were 0.719±0.061 µg/ml, 1.484±0.107 µg/ml and 7.743±0.141 µg/ml, respectively. Thus, this study results suggested that yellow cotton flowers containing reasonable amounts appealable in the DSSC production.

scholarly journals Preparation and photocatalytic performance of metallic Nb0.9Ta0.1S2/2D-C3N4 composite

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Hanxiang Chen ◽  
Jianjian Yi ◽  
Zhao Mo ◽  
Yanhua Song ◽  
Wenshu Yang ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Low Cost ◽  
Metal Sulfide ◽  
Electron Hole ◽  
Practical Applications ◽  
Energy And Environment ◽  
Photocatalytic Application ◽  
Light Utilization ◽  
Ternary Metal ◽  
Key Issues

Abstract Photocatalysis technology has potential application in the field of energy and environment. How to expand visible light utilization and promote the separation efficiency of the carriers are the key issues for the high active photocatalysts preparation and future practical applications. In this work, a ternary metal sulfide Nb0.9Ta0.1S2 was prepared and used as an electron collector in the photocatalytic application. As a result, the generated electrons are quickly transferred to the surface of the composite to participate in the reaction. It was demonstrated that the photocatalytic activity of 2D-C3N4 was enhanced after the modification of Nb0.9Ta0.1S2. The Nb0.9Ta0.1S2/2D-C3N4 composite material was synthesized by solvothermal method. The composition of 5% Nb0.9Ta0.1S2/2D-C3N4 showed the highest H2 evolution rate of 1961.6 μmolg−1h−1, which was 6.6 times that of 2D-C3N4. The 15% Nb0.9Ta0.1S2/2D-C3N4 exhibited the best activity in Rhodamine B degradation rate of 97% in 2 h, which is 50% higher than that of 2D-C3N4. Nb0.9Ta0.1S2/2D-C3N4 can be used as electron trap to promote the effective separation of electron–hole pairs. This work provides benchmarks in exploring low-cost and efficient cocatalyst.

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