Solvothermal synthesis of mesoporous TiO2 with tunable surface area, crystal size and surface hydroxylation for efficient photocatalytic acetaldehyde degradation

Zhang, Kaimin; Wang, Jinxin; Ninakanti, Rajeshreddy; Verbruggen, Sammy W.

doi:10.1016/j.cej.2023.145188

Cited by 5 publications

(4 citation statements)

References 73 publications

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“…Similar observations were made by Carneiro et al . [47] , Xu et al [48] , and recently by Zhang et al [49] , who also studied the effect of surface water on the photocatalytic acetaldehyde degradation efficiency. They saw that a weaker interaction between surface water and the TiO 2 surface reduces its competitive behaviour, which eventually leads to an improved acetaldehyde adsorption and degradation capacity.…”

Section: Resultsmentioning

confidence: 99%

Black titania by sonochemistry: A critical evaluation of existing methods

Raes,

Ninakanti,

Van den Bergh

et al. 2023

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

Black titania by sonochemistry: A critical evaluation of existing methods

Raes,

Ninakanti,

Van den Bergh

et al. 2023

Ultrasonics Sonochemistry

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“…The result can promote more excellent photocatalytic activity because there is an increase in reactive sites due to the greater surface area, where chemical reactions occur [43]. In Table 1, even with different surface areas, the particle sizes differ based on the synthesis method and solvation temperature, as these are parameters that influence the structure and physicochemical properties [44,45]. For example, in XRD, the decrease in crystallinity affects the effectiveness of increasing the surface area and tends to be decreased through surface factors during the synthesis process [46].…”

Section: Adsorption-desorption Of Nmentioning

confidence: 99%

Biopolymer Gellan-Gum-Based TiO2: A Green Alternative Photocatalyst Approach for Removal of Pollutants

Xisto,

Damacena,

de Araújo

et al. 2024

Water

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Titanium dioxide TiO2/gellan gum (GG) in different compositions (1, 3, and 5% GG) was investigated to degrade methylene blue (MB) under UV light. XRD, SEM, and EDS confirmed the anatase phase. The textural properties demonstrated the formation of mesopores. The band gaps were 3.2 eV, 3.0 eV, and 2.9 eV. A photodegradation of MB of 95% was observed using the lowest gum concentration. It was attributed to the photogenerated radicals and the specific surface area. The FTIR spectra showed the photostability of the catalyst after successive cycles. The toxicity tests demonstrated no toxicity after dye degradation. Therefore, TiO2/GG is promising for the treatment of water.

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“…Different methods exist for synthesizing TiO 2 , such as the sol-gel method [ 10 ], the sol-gel-hydrothermal method [ 20 ], the hydrothermal method [ 21 ], the solvothermal method [ 22 ], and the recently appeared microwave-assisted synthesis method [ 11 , 13 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of TiO2 Nanoparticles Synthesized via Microwave Assistance on Adsorption and Photocatalytic Degradation of Ciprofloxacin

Briševac,

Gabelica,

Ljubas

et al. 2024

Molecules

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In this study, the optimal microwave-assisted sol-gel synthesis parameters for achieving TiO2 nanoparticles with the highest specific surface area and photocatalytic activity were determined. Titanium isopropoxide was used as a precursor to prepare the sol (colloidal solution) of TiO2. Isopropanol was used as a solvent; acetylacetone was used as a complexation moderator; and nitric acid was used as a catalyst. Four samples of titanium dioxide were synthesized from the prepared colloidal solution in a microwave reactor at a temperature of 150 °C for 30 min and at a temperature of 200 °C for 10, 20, and 30 min. The phase composition of the TiO2 samples was determined by X-ray diffraction analysis (XRD) and Fourier-transform infrared spectroscopy (FTIR). Nitrogen adsorption/desorption isotherms were used to determine the specific surface area and pore size distributions using the Brunauer–Emmett–Teller (BET) method. The band-gap energy values of the TiO2 samples were determined by diffuse reflectance spectroscopy (DRS). The distribution of Ti and O in the TiO2 samples was determined by SEM-EDS analysis. The effects of adsorption and photocatalytic activity of the prepared TiO2 samples were evaluated by the degradation of ciprofloxacin (CIP) as an emerging organic pollutant (EOP) under UV-A light (365 nm). The results of the photocatalytic activity of the synthesized TiO2 nanoparticles were compared to the benchmark Degussa P25 TiO2. Kinetic parameters of adsorption and photocatalysis were determined and analyzed. It was found that crystalline TiO2 nanoparticles with the highest specific surface area, the lowest energy band gap, and the highest photocatalytic degradation were the samples synthesized at 200 °C for 10 min. The results indicate that CIP degradation by all TiO2 samples prepared at 200 °C show a synergistic effect of adsorption and photocatalytic degradation in the removal process.

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Solvothermal synthesis of mesoporous TiO2 with tunable surface area, crystal size and surface hydroxylation for efficient photocatalytic acetaldehyde degradation

Cited by 5 publications

References 73 publications

Black titania by sonochemistry: A critical evaluation of existing methods

Black titania by sonochemistry: A critical evaluation of existing methods

Biopolymer Gellan-Gum-Based TiO2: A Green Alternative Photocatalyst Approach for Removal of Pollutants

Effects of TiO2 Nanoparticles Synthesized via Microwave Assistance on Adsorption and Photocatalytic Degradation of Ciprofloxacin

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