A cascading gradient pore microstructured photoanode with enhanced photoelectrochemical and photocatalytic activities

Li, Lin; Chen, Rong; Zhu, Xun; Liu, Qiang; Wang, Hong; An, Liang; Zhang, Muxing

doi:10.1016/j.jcat.2016.09.017

Cited by 29 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Small particle size leads to enlargement of the surface area. TiO2 micropores provide an efficient diffusion pathway for mass transfer and help in trapping the photons captured by the dye molecule [15]. A high surface area will provide the photoanode to accommodate more dye in it, thus the photons will be absorbed in large quantity and more electrons will be converted into electrical energy [2].…”

Section: Morphology Of Photoanodesmentioning

confidence: 99%

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Nasikhudin

Pujiarti

Rahman

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The photovoltaic performance of Dye-sensitized Solar Cells (DSSC) could be optimized by playing the working area of the mesoporous TiO2 photoanode. A small working area will enhance the photovoltage and power conversion efficiency. In comparison, a large working area will improve the recombination rate and reduce the photon particle transport rate at the photoanode. The TiO2 based photoanode layer consists of a blocking layer and mesoporous paste deposited using spin coating and screen printing technique, respectively with various working areas of 0.25, 0.30, and 0.56 cm2. The cells were characterized using XRD, SEM-EDX, UV-Vis spectroscopy, and solar simulator. XRD confirmed that the TiO2 was in the anatase phase. SEM image represented a high surface area of mesoporous TiO2 indicated by porosity level up to 70%. The elemental analysis of TiO2 using EDX observed the presence of Ti and O peaks. The TiO2 mesoporous-based photoanode immersed in 0.07 mM of N719 solution possessed an absorbance range in the ultraviolet to the visible light. The working area of 0.25 cm2 exhibited a promising power conversion efficiency of 2.02% with a circuit current density of 10.8 mA/cm2 under an illumination light of 100 mW/cm2.

show abstract

Section: Morphology Of Photoanodesmentioning

confidence: 99%

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Nasikhudin

Pujiarti

Rahman

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…The inherent defects of low surface area and absent pore structure, as well as terrible transport efficiency of electron, photon, and reactants of such compact structure, significantly inhibit the photoelectrochemical conversion of the solar energy [18][19][20]. Because of this, the synthesis of TiO 2 nanostructures with sufficiently high surface area, the construction of the spatial photoanode structure for furnishing adequate active sites, and promoting the transport of both the reactants and photons as well as charger carriers become valid strategies for the photocatalytic performance improvement [21,22]. Therefore, it would be of great benefit to exploit and integrate the nanostructured TiO 2 photocatalysts in VPECs to realize efficient solar energy conversion and storage.…”

Section: Introductionmentioning

confidence: 99%

Solar Energy Storage in an All-Vanadium Photoelectrochemical Cell: Structural Effect of Titania Nanocatalyst in Photoanode

et al. 2022

View full text Add to dashboard Cite

Solar energy storage in the form of chemical energy is considered a promising alternative for solar energy utilization. High-performance solar energy conversion and storage significantly rely on the sufficient active surface area and the efficient transport of both reactants and charge carriers. Herein, the structure evolution of titania nanotube photocatalyst during the photoanode fabrication and its effect on photoelectrochemical activity in a microfluidic all-vanadium photoelectrochemical cell was investigated. Experimental results have shown that there exist opposite variation trends for the pore structure and crystallinity of the photocatalyst. With the increase in calcination temperature, the active surface area and pore volume were gradually declined while the crystallinity was significantly improved. The trade-off between the gradually deteriorated sintering and optimized crystallinity of the photocatalyst then determined the photoelectrochemical reaction efficiency. The optimal average photocurrent density and vanadium ions conversion rate emerged at an appropriate calcination temperature, where both the plentiful pores and large active surface area, as well as good crystallinity, could be ensured to promote the photoelectrochemical activity. This work reveals the structure evolution of the nanostructured photocatalyst in influencing the solar energy conversion and storage, which is useful for the structural design of the photoelectrodes in real applications.

show abstract

“…Generally, main strategies for the intensification of the PEC performance can be divided into two orientations: (1) the development of highly efficient photocatalysts, − and (2) the optimization of the PEC design . Currently, the most commonly used photoanode catalyst is TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Anion-Exchange Membrane Electrode Assembled Photoelectrochemical Cell with a Visible Light Responsive Photoanode for Simultaneously Treating Wastewater and Generating Electricity

Feng

Chen

et al. 2019

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

In this work, an anion-exchange membrane electrode assembled photoelectrochemical cell is designed for simultaneously degrading organics and generating electricity. The proposed photoelectrochemical cell is formed by assembling a visible light-responsive photoanode and an air-breathing cathode with an anion-exchange membrane. Benefited from the intrinsic property of the anionexchange membrane, the hydroxyl transport can be enhanced and the organics crossover can be reduced to improve the performance of the proposed photoelectrochemical cell. Experimental results show that increasing the electrolyte concentration and light intensity yields higher performance because of the more efficient capture and generation of photo-excited holes. Besides, the cell performance can also be enhanced with increasing ethanol concentration in the testing range, demonstrating the lowered ethanol crossover through the anion-exchange membrane and a mixed potential at the cathode. The obtained results are useful for not only the optimization of the photoelectrochemical cell design but also the promotion of its practical application.

show abstract

A cascading gradient pore microstructured photoanode with enhanced photoelectrochemical and photocatalytic activities

Cited by 29 publications

References 28 publications

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Solar Energy Storage in an All-Vanadium Photoelectrochemical Cell: Structural Effect of Titania Nanocatalyst in Photoanode

Anion-Exchange Membrane Electrode Assembled Photoelectrochemical Cell with a Visible Light Responsive Photoanode for Simultaneously Treating Wastewater and Generating Electricity

Contact Info

Product

Resources

About

A cascading gradient pore microstructured photoanode with enhanced photoelectrochemical and photocatalytic activities

Cited by 29 publications

References 28 publications

Photovoltaic Performance of TiO2 Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Photovoltaic Performance of TiO2 Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Solar Energy Storage in an All-Vanadium Photoelectrochemical Cell: Structural Effect of Titania Nanocatalyst in Photoanode

Anion-Exchange Membrane Electrode Assembled Photoelectrochemical Cell with a Visible Light Responsive Photoanode for Simultaneously Treating Wastewater and Generating Electricity

Contact Info

Product

Resources

About

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells

Photovoltaic Performance of TiO₂ Mesoporous Films with Different Working Areas for Dye-sensitized Solar Cells