New Organic Donor-Acceptor-π-Acceptor Sensitizers for Efficient Dye-Sensitized Solar Cells and Photocatalytic Hydrogen Evolution under Visible-Light Irradiation

ChemSusChem ◽  
2014 ◽  
Vol 7 (10) ◽  
pp. 2879-2888 ◽  
Author(s):  
Xing Li ◽  
Shicong Cui ◽  
Dan Wang ◽  
Ying Zhou ◽  
Hao Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Dye Sensitized Solar Cells ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Dye Sensitized ◽  
Donor Acceptor ◽  
Sensitized Solar Cells

Effect of π-bridge groups based on indeno[1,2-b]thiophene D–A–π–A sensitizers on the performance of dye-sensitized solar cells and photocatalytic hydrogen evolution

2020 ◽  
Vol 8 (42) ◽  
pp. 14864-14872
Author(s):  
Haoran Ding ◽  
Yanmeng Chu ◽  
Mengyu Xu ◽  
Shicong Zhang ◽  
Haoran Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hydrogen Evolution ◽  
Dye Sensitized Solar Cells ◽  
Evolution Rate ◽  
Photocatalytic Hydrogen Evolution ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Three new sensitizers (SD1, SD2 and SD3) with different π-bridge moieties were designed and investigated. SD1-based DSCs achieved a better PCE of 8.96%, while the composite of SD2@Pt/TiO2 afforded the highest H2 evolution rate of 23.5 mmol g−1 h−1.

Graphene enhanced photocatalytic hydrogen evolution performance of dye-sensitized TiO2 under visible light irradiation

2013 ◽  
Vol 107 ◽  
pp. 31-34 ◽  
Author(s):  
Yajing Chen ◽  
Zhigang Mou ◽  
Shunli Yin ◽  
Hui Huang ◽  
Ping Yang ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Dye Sensitized

Semiconductor Photocatalysts for Solar-to-Hydrogen Energy Conversion: Recent Advances of CdS

2020 ◽  
Vol 16 ◽  
Author(s):  
Yuxue Wei ◽  
Honglin Qin ◽  
Jinxin Deng ◽  
Xiaomeng Cheng ◽  
Mengdie Cai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Noble Metals ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Theoretical Design ◽  
Recent Developments

Introduction: Solar-driven photocatalytic hydrogen production from water splitting is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. In this review, recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. In particular, the factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Background: Photocatalytic hydrogen evolution from water splitting using photocatalyst semiconductors is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. Methods: This review summarizes the recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation. Results: Recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. The factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Conclusion: The state-of-the-art CdS for producing hydrogen from photocatalytic water splitting under visible light is discussed. The future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are also described.

D–π–A-type triphenylamine dye covalent-functionalized g-C3N4 for highly efficient photocatalytic hydrogen evolution

2020 ◽  
Vol 10 (6) ◽  
pp. 1609-1618 ◽  
Author(s):  
Chao Zhang ◽  
Jiandong Liu ◽  
Xingliang Liu ◽  
Shiai Xu
Keyword(s):  
Reaction Mechanism ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient

Reaction mechanism for the higher photocatalytic performance of H2 production of g-C3N4NSs/TC1 under visible light irradiation (λ ≥ 400 nm).

scholarly journals Pyran-Squaraine as Photosensitizers for Dye-Sensitized Solar Cells: DFT/TDDFT Study of the Electronic Structures and Absorption Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Reda M. El-Shishtawy ◽  
Shaaban A. Elroby ◽  
Abdullah M. Asiri ◽  
Rifaat H. Hilal
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Nbo Analysis ◽  
Basis Set ◽  
Absorption Properties ◽  
Charge Delocalization ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Donor Acceptor ◽  
Sensitized Solar Cells

In an effort to provide, assess, and evaluate a theoretical approach which enables designing efficient donor-acceptor dye systems, the electronic structure and optical properties of pyran-squaraine as donor-acceptor dyes used in dye-sensitized solar cells were investigated. Ground state properties have been computed at the B3LYP/6-31+G**level of theory. The long-range corrected density functionals CAM-B3LYP, PBEPBE, PBE1PBE (PBE0), and TPSSH with 6-311++G**were employed to examine absorption properties of the studied dyes. In an extensive comparison between experimental results and ab initio benchmark calculations, the TPSSH functional with 6-311++G**basis set was found to be the most appropriate in describing the electronic properties for the studied pyran and squaraine dyes. Natural transition orbitals (NTO), frontier molecular orbitals (FMO), LUMO, HOMO, and energy gaps, of these dyes, have been analyzed to show their effect on the process of electron injection and dye regeneration. Interaction between HOMO and LUMO of pyran and squaraine dyes was investigated to understand the recombination process and charge-transfer process involving these dyes. Additionally, we performed natural bond orbital (NBO) analysis to investigate the role of charge delocalization and hyperconjugative interactions in the stability of the molecule.

Molecular design of donor-acceptor dyes for efficient dye-sensitized solar cells I: a DFT study

2014 ◽  
Vol 20 (6) ◽  
Author(s):  
Reda M. El-Shishtawy ◽  
Abdullah M. Asiri ◽  
Saadullah G. Aziz ◽  
Shaaban A. K. Elroby
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Dye Sensitized Solar Cells ◽  
Dft Study ◽  
Dye Sensitized ◽  
Donor Acceptor ◽  
Sensitized Solar Cells

New Dual Donor-Acceptor (2D-π-2A) Porphyrin Sensitizers for Stable and Cost-Effective Dye-Sensitized Solar Cells

2013 ◽  
Vol 8 (9) ◽  
pp. 2144-2153 ◽  
Author(s):  
Ram B. Ambre ◽  
Gao-Fong Chang ◽  
Manoj R. Zanwar ◽  
Ching-Fa Yao ◽  
Eric Wei-Guang Diau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
Dye Sensitized ◽  
Donor Acceptor ◽  
Sensitized Solar Cells
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