Microwave-assisted synthesis of titanium dioxide nanocrystalline for efficient dye-sensitized and perovskite solar cells

Shen, Po-Chuan; Tseng, Chuan-Ming; Kuo, Ta Chuan; Shih, Ching Kuei; Li, Ming Hsien; Chen, Peter

doi:10.1016/j.solener.2015.07.036

Cited by 36 publications

(16 citation statements)

References 56 publications

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“…The interaction of high frequencies of electromagnetic radiation with the permanent dipole of the solvent molecules, which reaches high temperatures in a short period due to the molecular rotation, occurs with the use of microwave radiation. The microwave assisted hydrothermal method has advantages such as short time reaction, convenience and low cost effective, besides the possibility of obtaining particles of different morphologies [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method

Byzynski

Pereira

Volanti

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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The use of extensive, time-consuming synthesis and the cost of an additional element in synthesis makes difficult the synthesis of photocatalyst active under a broad wavelength range. We propose a synthesis method to obtain ZnO nanoparticles in distinctive morphologies, which lie to several photocatalytic activation conditions. The Zn precursor concentration, solvent, temperature and reaction time altered the ZnO particles morphologies. Although all synthesis parameters modification interferes in ZnO particle morphology, the most pronounced was Zn salt precursor concentration. The synthesis parameter did not interfere in the crystalline wurtzite ZnO phase and the optical characterization, indicating possibilities of ionic defects formations in ZnO lattice. The "3-D flower like" ZnO structure reaches 98% of discoloration under UV illumination and 42% under visible illumination of initial rhodamine-B concentration. The good UV and visible photocatalytic active confirms that with only the modification of synthesis method without any dopant element, ZnO structure is active in large wavelength range.

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Section: Introductionmentioning

confidence: 99%

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method

Byzynski

Pereira

Volanti

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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“…6) a band appeared at 31003700 cm ¹1 connected to stretching vibrations of OH groups and a peak at 1630 cm ¹1 ascribed to the bending vibration of OH groups in free hydroxyls or adsorbed water were observed. 18) They can enhanced the photoactivity of catalyst based on the formation of hydroxyl radicals and the prevention of electron-hole recombination. 19) The peaks at 400800 cm ¹1 may be attributed to Ti O and AlO vibrations.…”

Section: Characteristics Of Ato-700-3mentioning

confidence: 99%

A Low Temperature Fabrication and Photoactivity of Al<sub>2</sub>TiO<sub>5</sub> in Cinnamic Acid Degradation

Trung

Tri

et al. 2019

Mater. Trans.

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Aluminum titanate was fabricated by sol-gel method using aluminium nitrate, titanium isopropoxide as precursors and citric acid as a complexing reagent. Effects of calcination temperature, citric acid content and calcination duration on the formation of Al 2 TiO 5 (ATO) phase were investigated by X-ray diffraction. The results showed that the ATO-rich mixture with traces of anatase TiO 2 was obtained at low calcination temperature (700°C). The properties of obtained ATO were characterized by various methods such as FTIR, N 2 isotherm adsorption, DRS, SEM, TEM, and TGA. The point of zero charge of sample was also determined by salt addition method. Owning band gap energy of 3.42 eV the nanostructured ATO could be activated by UV light to become photocatalyst. Indeed, at favorable reaction conditions, detected from the experiment, the obtained ATO gave the photodegradation efficiency of cinnamic acid (CA) approximately 90% after 6 h. ATO also showed high stability and easily separated from solution, consequently after 9 times of reusing the CA degradation extent lightly decreased about 20%.

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“…The chemical and physical properties displayed by these crystallographic forms depend on the synthesis route [55]. Titanium dioxide nanoparticles can be produced by approaches such as the sol-gel technique [55,56], microwave assisted hydrolysis [57], hydrothermal method [58], co-precipitation route [59], flame combustion method [60,61] and chemical vapour deposition (CVD) [62].…”

Section: Titanium Dioxide (Tio 2 )mentioning

confidence: 99%

Platinum-Based Carbon Nanodots Nanocatalysts for Direct Alcohol Fuel Cells

Gwebu¹,

Nomngongo²,

Maxakato³

2019

Nanocatalysts

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Platinum and its alloys are regarded as best nanocatalysts for the electro-oxidation of alcohol fuels especially in acidic conditions. The performance of nanocatalysts for alcohol fuel cells depends greatly on the support material. A good support material should have high surface area to obtain high metal dispersion. It should also bond and interact with the nanocatalysts to improve the activity of the overall electrode. Most importantly, the support material should offer great resistance to corrosion under the harsh fuel cell conditions. In this chapter, the use of carbon nanodots as support materials for Pt-Sn and Pt-TiO 2 nanoparticles is discussed. The electrochemical activity of Pt/CNDs, Pt-Sn/CNDs and Pt/CNDs-TiO 2 nanocatalysts was studied using cyclic voltammetry (CV) in acidic and alkaline conditions. Chronoamperometry (CA) was used to investigate the long-term stability of the nanocatalysts under the fuel cell environment. Electrochemical results demonstrated that binary Pt nanocatalysts are more active compared to monocatalysts. It was also observed that carbon nanodots are better support materials than carbon black. Blending carbon nanodots with titanium dioxide (a ceramic material) improves the corrosion resistance of the nanocatalyst. Cyclic voltammetry results also proved that alcohol electro-oxidation is enhanced in alkaline conditions.

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Microwave-assisted synthesis of titanium dioxide nanocrystalline for efficient dye-sensitized and perovskite solar cells

Cited by 36 publications

References 56 publications

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method

A Low Temperature Fabrication and Photoactivity of Al<sub>2</sub>TiO<sub>5</sub> in Cinnamic Acid Degradation

Platinum-Based Carbon Nanodots Nanocatalysts for Direct Alcohol Fuel Cells

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