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 6 publications

(4 citation statements)

References 73 publications

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“…[4,8] Other techniques were recently reported such as; i) microwave irradiation for preparation and regeneration of wheat straw derived magnetic biochar, [12] ii) electromagnetic induction technology for magnetic biochar production from cellulose [13] and mechanochemical ball-milling of lignin and blast furnace dust with further pyrolysis and coprecipitation method. [14] A high adsorption capacity was reported for the magnetic biochar derived from macroalgal Sargassum hemiphyllum, namely 105.3 mg/g for Cu (II) elimination, followed by easy separation utilizing a magnet after the treatment. [15] MB is widely used as a synthetic dye in various industries such as paper, silk, wool, and cotton dyeing.…”

Section: Introductionmentioning

confidence: 99%

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Zeghioud,

Mouhamadou

2023

ChemistrySelect

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In this study, two types of magnetic biochars (Magnetic Bark Biochar with protocol 1 (MBB1) and Magnetic Bark Biochar with protocol 2 (MBB2)) were synthesized using pristine poplar bark biochar (PBB) via co‐precipitation. The two prepared magnetic biochars were tested to investigate the aqueous methylene blue (MB) removal performances. MB dye was used as a common pollutant for biochar quality evaluation and the obtained performance in this work was compared with literature. Different analysis techniques such as Scanning Electron Microscope (SEM), Energy Dispersive X‐ray Spectroscopy (EDS), Brunauer‐Emmett‐Teller (BET), porosimetry, Raman spectrometry and Fourier Transform Infrared spectroscopy (FTIR) were used to characterize the obtained materials. Biochars have a microporous structure with an average pore diameter of less than 0.26 nm. Magnetization of bark biochar leads to a loss in specific surface area (from 263.45 m2/g for PBB to 39.22 and 73.02 m2/g for MBB1 and MBB2, respectively) and an increase in total porosity by 85.11 and 12.72 %, respectively. MB adsorption process on MBB1 and MBB2 was best described by the pseudo‐first‐order kinetic model (R2=0.98) and by pseudo‐second‐order kinetic model for PBB (R2=0.9). The Langmuir monolayer adsorption and Marczewski‐jaroniec (M‐J) models presented the best fit for both PBB and MBB2 showing favourable adsorption process. Based on maximum adsorption capacity (qm: 32.98 mg/g) and the highest R2 value (0.96), MBB1 adsorption isotherm was well described by Langmuir model. Isotherm study revealed that MBB2 has the highest adsorption capacity of 49.02 mg/g followed by PBB with 37.85 mg/g. MB‐biochar interactions are dominated by chemisorption regarding the PBB and by physisorption concerning the magnetic biochars.

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Section: Introductionmentioning

confidence: 99%

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Zeghioud,

Mouhamadou

2023

ChemistrySelect

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

Cited by 6 publications

References 73 publications

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Easy Recovered Magnetic Bark Biochar for Methylene Blue Removal: Preparation Characterization and Adsorption Parameters Study

Black titania by sonochemistry: A critical evaluation of existing methods

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

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