Structure-tunable hydrothermal synthesis of composite TiO<sub>2</sub>@glucose carbon microspheres (TiO<sub>2</sub>@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF)

Zheng, P.; Li, Hongying; Wu, Fei; Bai, Bo; Guan, Wenxian

doi:10.1039/c5nj01537e

Cited by 10 publications

(1 citation statement)

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“…Zheng et al . prepared carbon microspheres with a BET specific surface area of 16.7 m 2 /g by the hydrothermal method and using glucose as carbon source; the carbon microspheres exhibited a mesoporous structure . Considering the carbon material prepared using SnO 2 as a template, its specific surface area value is related to the specific surface area of the template.…”

Section: Resultsmentioning

confidence: 99%

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Yang

Wang

2019

J of Chemical Tech & Biotech

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BACKGROUND: Mesoporous double-layer carbon microspheres (DCSs) were synthesized using hollow tin(IV) oxide (SnO 2 ) microspheres as hard template and sucrose as carbon precursor via the hydrothermal method. Sulfonic acid groups (-SO 3 H) were introduced onto the surfaces of DCS by sulfuric acid heating and sulfanilic acid diazonium coupling, respectively, to form two solid acids (DCS-SS and DCS-DS, respectively). RESULTS: The transmission electron microscopy images showed that the carbon microspheres possessed a hollow double-layerstructure with diameters of about 200 to 300 nm and shell thickness of about 30 to 50 nm. Furthermore, the sulfonate treatments caused no changes in the morphology of carbon microspheres. The nitrogen (N 2 )-Brunauer-Emmett-Teller (BET) results indicate that DCS, DCS-SS, and DCS-DS featured mesopores with an average pore size of 4.5 to 4.8 nm and BET surface areas of 75 m 2 /g, 57 m 2 /g, and 53 m 2 /g, respectively. The X-ray photoelectron spectroscopy and Fourier-transform infrared results confirmed that the DCS-SS and DCS-DS contained a -SO 3 H group and their surface acid densities are 4.5 and 4.1 mmol/g, respectively.CONCLUSION: DCS-SS and DCS-DS were used to catalyze the transesterification of waste frying oil, and the highest yields of fatty acid methyl esters, that is, 85% and 80%, respectively, could be obtained. CONCLUSIONThe sulfonated mesoporous DCS (DCS-SS and DCS-DS) were successfully prepared. DCS-SS and DCS-DS possessed average pore sizes of 4.1 to 4.5 nm, BET surface area of 53 to 57 m 2 /g, J Chem Technol Biotechnol 2019; 94: [3538][3539][3540][3541][3542][3543][3544][3545][3546][3547]

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Section: Resultsmentioning

confidence: 99%

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Yang

Wang

2019

J of Chemical Tech & Biotech

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Unveiling the mechanism of enhanced methylene blue degradation using chromium-TiO2/carbon nanocomposite photocatalyst

Padwal,

Panchang,

Fouad

et al. 2023

J Solid State Electrochem

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A critical review of hydrochar based photocatalysts by hydrothermal carbonization: synthesis, mechanisms, and applications

Chen,

Guo,

Luo

et al. 2024

Biochar

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Hydrothermal carbonization (HTC) stands out as an eco-friendly, cost-effective method for generating renewable carbon-based materials from biomass. The HTC process yields products such as hydrochars and carbon dots (CDs), possessed of notable photocatalytic capabilities due to their unique physicochemical features. Additionally, pairing traditional photocatalysts with hydrochar derivatives elevates their performance, rendering them more effective. Recent times have witnessed a surge in interest in these hydrochar based photocatalysts (HC-photocatalysts). Their appeal stems from multiple attributes: impeccable performance, adaptability to visible light, and adjustable physicochemical properties. This review delves deep into the evolving landscape of these HC-photocatalysts, segmenting them into three distinct categories: hydrochars, hydrochar-based CDs (HC-CDs), and hydrochar-based composites (HC-composites). For each category, we dissect their synthesis routes, unravel the photocatalytic mechanisms, and explore various enhancement strategies. We further traverse their versatile applications, spanning environmental treatment, disinfection, energy conversion, and organic synthesis. In the end, we spotlight the prevailing challenges and uncharted territories in the domain of HC-photocatalysts. In essence, this review serves as a guide, furnishing a theoretical foundation and steering directions for future explorations and tangible implementations of HC-photocatalysts. Graphical Abstract

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Structure-tunable hydrothermal synthesis of composite TiO₂@glucose carbon microspheres (TiO₂@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF)

Abstract: In this work, structure-tunable hydrothermal synthesis of composite TiO2@glucose carbon microspheres (TiO2@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF) is demonstrated.

Cited by 10 publications

References 41 publications

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Unveiling the mechanism of enhanced methylene blue degradation using chromium-TiO2/carbon nanocomposite photocatalyst

A critical review of hydrochar based photocatalysts by hydrothermal carbonization: synthesis, mechanisms, and applications

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Structure-tunable hydrothermal synthesis of composite TiO2@glucose carbon microspheres (TiO2@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF)

Abstract: In this work, structure-tunable hydrothermal synthesis of composite TiO2@glucose carbon microspheres (TiO2@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF) is demonstrated.

Cited by 10 publications

References 41 publications

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Preparation of mesoporous double‐layer carbon microsphere‐based solid acid catalyst by hydrothermal method and its application in catalytic transesterification of waste frying oil

Unveiling the mechanism of enhanced methylene blue degradation using chromium-TiO2/carbon nanocomposite photocatalyst

A critical review of hydrochar based photocatalysts by hydrothermal carbonization: synthesis, mechanisms, and applications

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Structure-tunable hydrothermal synthesis of composite TiO₂@glucose carbon microspheres (TiO₂@GCs) with enhanced performance in the photocatalytic removal of acid fuchsin (AF)