Mesoporous anatase TiO2 microspheres with interconnected nanoparticles delivering enhanced dye-loading and charge transport for efficient dye-sensitized solar cells

Chu, Liang; Qin, Zhengfei; Zhang, Qiaoxia; Chen, Wei; Yang, Jian; Yang, Jianping; Li, Xing’ao

doi:10.1016/j.apsusc.2015.11.034

Cited by 37 publications

(15 citation statements)

References 31 publications

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“…This impressive result is possibly due to the mesostructure in 3DOM. Photocatalysts with high dye-loading capacity are also desirable for other applications such as dye-sensitized solar cells (DSSC), [ 49 , 50 , 51 , 52 ] highlighting the potential utilization of our developed catalysts in other applications. The photocatalytic efficiency of the 3D-HPT was also compared with the commercial anatase TiO 2 and no catalysts, and the results are presented in Figure 5 a.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Poolwong

Kiatboonyarit²,

Achiwawanich³

et al. 2021

Nanomaterials

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Three-dimensional hierarchical mesoporous structures of titanium dioxide (3D-HPT) were synthesized by self-assembly emulsion polymerization. Polymethyl methacrylate (PMMA) and pluronic 123 (P123) were used as the soft templates and co-templates for assisting the formation of hierarchical 3D porous structures. The TiO2 crystal structure, morphology, and Remazol red dye degradation were investigated. The 3D-HPT and normal three-dimensional titanium dioxide (3D-T) presented the good connection of the nanoparticle-linked honeycomb within the form of anatase. The 3D-HPT structure showed greatly enhanced adsorption of Remazol dye, and facilitated the efficient photocatalytic breakdown of the dye. Surprisingly, 3D-HPT can adsorb approximately 40% of 24 ppm Remazol dye in the dark, which is superior to 3D-T and the commercial anatase at the same condition (approx. 5%). Moreover, 3D-HPT can completely decolorize Remazol dye within just 20 min, which is more than three folds faster than the commercial anatase, making it one of the most active photocatalysts that have been reported for degradation of Remazol dye. The superior photocatalytic performance is attributed to the higher specific surface area, amplified light-harvesting efficiency, and enhanced adsorption capacity into the hierarchical 3D inverse opal structure compared to the commercial anatase TiO2.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Poolwong

Kiatboonyarit²,

Achiwawanich³

et al. 2021

Nanomaterials

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“…To build on that work, in this study, TiO2 dual morphologies including nanospheres with nanoparticles, microsphere decorated with nanoparticles and nanoparticles with stone like structures were prepared by a simple and one step reflux method. To the best of our knowledge, the projected synthesis mechanism is easy and less time-consuming when compared to already reported methodologies for the preparation of nanocomposites [40]. This work makes a significant contribution to the composite structure based TiO2 photoanode performance towards the incident photon to electron conversion efficiency.…”

Section: Introductionmentioning

confidence: 91%

“…Dual morphology nanomaterials have been represented in some previously reported articles as nanocomposites [32], [39]. Liang et al employed hydrothermal method to prepare anatase TiO2 microspheres with interconnected nanoparticles, which offered a photovoltaic conversion efficiency of 7.13% at an optimum thickness of 14.5 µm [40]. Ilayaraja et al synthesized TiO2 microspheres and higher conversion efficiency of 8.94% was achieved using dual morphology composite based photoanode by mixing 80 weight percentage of TiO2 synthesized microsphere and 20 weight percentage of P25 powder.…”

Section: Introductionmentioning

confidence: 99%

Dual morphology titanium dioxide for dye sensitized solar cells

Selvapriya

Mayandi

Ragavendran

et al. 2019

Ceramics International

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Anatase TiO2 displaying dual morphologies were synthesized with a simple chemical route via a single step. A strong correlation between the dye sensitized solar cell (DSSC) device performance and the obtained dual morphologies are highlighted using relevant evidences from UV-vis and diffuse reflectance spectroscopy (DRS), Raman analysis, field emission scanning electron microscope, high resolution transmission electron microscope, current-voltage characteristics and impedance analysis. Structural investigation revealed that the interested medium in this work employed for the synthesis of TiO2 produced different types of dual morphologies such as nanospheres with nanoparticles (NSNP), microsphere decorated with nanoparticles (μSNP) and nanoparticles with stone like features (NPS). UVvis and DRS results indicated the ability of the materials to assist with diffused reflectance and optical absorption of the screen printed photoanodes. In addition, an investigation of Raman vibrational characteristics was carried out in detail using synchronous and asynchronous 2D correlation analysis. The high intense Eg anatase mode of Raman spectrum was simulated using a phonon confinement model and its normalised spectra are compared with an experimental data. The resultant performances in the DSSCs were not indicative by the material properties; so, the charge transfer resistance (Rct) and recombination properties of the photoanode were investigated. These results showed that the Nyquist plot of NSNP possesses the smallest diameter, which reveals that the device based on NSNP offers the lowest Rct value that accounts for the higher conversion efficiencies when compared with the DSSC device based on photoanodes μSNP and NSP. It can be concluded that the improved power conversion efficiency shown by photoanode fabricated using NSNP has the dual role of optimum surface area for dye loading and light scattering centres. These properties, when optimized along with the offered pathway for electrolyte diffusion to the dye degeneration with less Rct, could lead to better photoelectric conversion efficiency.

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“…The Nyquist plot is composed of semicircle with a sloping line. The higher and middle frequency region forms a semicircle while a sloping line indicates a lower frequency region [39,40]. All the EIS parameters are shown in the Table 4.…”

Section: Eis Measurement Studymentioning

confidence: 99%

Influence of deposition temperature on the optical, structural, morphological, compositional and photoelectrochemical properties of TiO2 thin films

Desai

Mali

Mane

et al. 2016

J Mater Sci: Mater Electron

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In this investigation, we are reporting a photoelectrochemical (PEC) performance of TiO 2 thin films. Initially, TiO 2 thin films were synthesized by using a single step hydrothermal method. The influence of temperature on the optical, structural, morphological, compositional and PEC properties of TiO 2 thin films is investigated. The optical study reveals direct allowed type of transition. The XRD pattern confirms pure rutile phase with tetragonal crystal structure. The SEM analysis shows morphological transitions from 1D TiO 2 nanorods to give a 3D TiO 2 nanoflowers with increase in reaction temperature. The compositional data confirms the presence of titanium and oxygen in their respective oxidation state. HRTEM results confirm single crystalline nature of TiO 2 thin films. As the reaction temperature increased from 120 to 180°C photoconversion efficiency is enhanced from 0.33 to 0.47 %. Along with PEC performance electrochemical impedance spectra of all the samples is measured.

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Mesoporous anatase TiO2 microspheres with interconnected nanoparticles delivering enhanced dye-loading and charge transport for efficient dye-sensitized solar cells

Cited by 37 publications

References 31 publications

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Dual morphology titanium dioxide for dye sensitized solar cells

Influence of deposition temperature on the optical, structural, morphological, compositional and photoelectrochemical properties of TiO2 thin films

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