Preparation and characterization of TiO2 anode film with spinodal phase separation structure in dye-sensitized solar cells

Guli, Mina; Yao, Jianxi; Zhao, Jianguo; Rao, Wangping; Xiao, Li; Tian, Hongxin

doi:10.1016/j.optmat.2013.05.041

Cited by 7 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption band edge moves towards the lower direction with the increase in coating layers, which should come from the increased g-C3N4. The bandgap is calculated through the Tauc formula and the results are given in Figure 4B [28]. The band gaps of the g-C3N4-containing photocatalysts are obviously narrower than that of pristine TiO2 and become narrower with the increase in coating layers, and the specific band gap data are shown in Table 1.…”

Section: Optical Propertymentioning

confidence: 99%

Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant

et al. 2020

View full text Add to dashboard Cite

The increasing discharge of dyes and antibiotic pollutants in water has brought serious environmental problems. However, it is difficult to remove such pollutants effectively by traditional sewage treatment technologies. Semiconductor photocatalysis is a new environment-friendly technique and is widely used in aqueous pollution control. TiO2 is one of the most investigated photocatalysts; however, it still faces the main drawbacks of a poor visible-light response and a low charge-separation efficiency. Moreover, powder photocatalyst is difficult to be recovered, which is another obstacle limiting the practical application. In this article, g-C3N4/TiO2 heterojunction is simply immobilized on a glass substrate to form an all-solid-state Z-scheme heterojunction. The obtained thin-film photocatalyst was characterized and applied in the visible-light photodegradation of colored rhodamine B and tetracycline hydrochloride. The photocatalytic performance is related to the deposited layers, and the sample with five layers shows the best photocatalytic efficiency. The thin-film photocatalyst is easy to be recovered with stability. The active component responsible for the photodegradation is identified and a Z-scheme mechanism is proposed.

show abstract

Section: Optical Propertymentioning

confidence: 99%

Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The systems involving liquid crystals are investigated via simulation [47,53,31,45,11] and the phase diagram indicating where transitions between the nematic and isotropic phases of the liquid crystal occur is analyzed [47,53,40]. Recently, applications of models for similar systems include polymer-dispersed liquid crystals [44,1,34,48,19,21,22,39,29], diblock copolymers [32,46], and other cases of problems involving phase separation [5,27,33,38,6,41,42,61].…”

Section: Introductionmentioning

confidence: 99%

Ordering kinetics of a conserved binary mixture with a nematic liquid crystal component

Mata¹,

Garcı́a-Cervera²,

Ceniceros³

2014

Journal of Non-Newtonian Fluid Mechanics

View full text Add to dashboard Cite

“…These results suggest that the performance parameters measured under Raman conditions were adequate for semiquantitatively analyzing the DSSCs’ photovoltaic performance. The improved performance of TiO 2 NP@TNA-DSSCs is mainly due to the fact that TiO 2 NPs increase the specific surface area of the TNA photoanode, and this increased specific surface area helped improve both photoanode surface reactions and dye loading, accelerate electron transport, and prolong electron lifetimes …”

Section: Resultsmentioning

confidence: 99%

“…The improved performance of TiO 2 NP@TNA-DSSCs is mainly due to the fact that TiO 2 NPs increase the specific surface area of the TNA photoanode, and this increased specific surface area helped improve both photoanode surface reactions and dye loading, accelerate electron transport, and prolong electron lifetimes. 44 To evaluate the specific surface area changes of the two cells, the cyclic voltammogram (CV) curve was used to measure the electrochemical double layer capacitance (C dl ) and thereby estimate the electrode electrochemical surface area (ECSA). As shown in Figure 4b and Figure S9, the TiO 2 NP@TNA ECSA was larger than the TNAs' ECSA, suggesting that TiO 2 NP@ TNAs have more electrode active sites.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Probing the Open-Circuit Voltage Improvement of DSSC via Raman Spectroscopy: In Situ Dynamic Tracking Photoanode/Electrolyte Interfaces

Liu

Mao

Liu

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Photoelectric conversion efficiency is primarily determined by the carrier transport path of the dye-sensitized solar cell (DSSC) interface. While open-circuit voltage (V OC ) is one of the important performance parameters in DSSCs, a deeper understanding of its correlation with the photogenerated carrier transport at the photoanode interface has always been a major challenge for researchers. Here, we propose an in situ Raman spectroscopy strategy for synchronously monitoring the V OC value of DSSCs to investigate the photoanode operation mechanisms by revealing electrolyte species and dye evolution at the photoanode/ electrolyte interface. TiO 2 nanoparticles are modified on TiO 2 nanotube array surfaces to improve the specific surface area of dye sensitization and, thus, regulate the V OC of DSSCs. The results confirm that fluctuations in the Raman spectral intensities of polyiodide formed at the photoanode/electrolyte interface during photosensitization are highly correlated with the V OC value. Furthermore, direct spectroscopic evidence also revealed that pentaiodide is spontaneously and reversibly regenerated under DSSC operating conditions. Finally, a semiquantitative method for measuring V OC of DSSCs using Raman spectroscopy is established. This study represents that in situ Raman spectroscopy can be used as an effective platform for precisely revealing the optimization mechanism of V OC in real-time, thereby providing evidence at the molecular level for improving the photovoltaic conversion performance of DSSCs.

show abstract

Preparation and characterization of TiO2 anode film with spinodal phase separation structure in dye-sensitized solar cells

Cited by 7 publications

References 19 publications

Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant

Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant

Ordering kinetics of a conserved binary mixture with a nematic liquid crystal component

Probing the Open-Circuit Voltage Improvement of DSSC via Raman Spectroscopy: In Situ Dynamic Tracking Photoanode/Electrolyte Interfaces

Contact Info

Product

Resources

About