Preparing hierarchical porous carbon with well-developed microporosity using alkali metal-catalyzed hydrothermal carbonization for VOCs adsorption

Ye, Guangzheng; Zhu, Wenfu; Wang, Xiaohong; Yao, Fan; Jiao, Yujun; Cheng, Hairong; Huang, Haomin; Ye, Daiqi

doi:10.1016/j.chemosphere.2022.134248

Cited by 43 publications

(7 citation statements)

References 50 publications

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“…In addition, Table 5 indicates that the adsorption performances of the char materials obtained using metal‐containing catalysts are better for TC, and that the use of metal salts instead of acids and bases as catalysts for HTC can avoid corrosion of the equipment (by said acid or base catalysts). The iron‐containing catalysts also make the adsorbent material magnetic, which enables rapid separation of the adsorbent from the contaminant using an external magnetic field after the adsorption is completed 62,63 . Therefore, compared to the adsorbents reported in the literature, the hydrochar adsorbent prepared in the present study has the potential to remove TC from aqueous solutions.…”

Section: Resultsmentioning

confidence: 99%

“…The ironcontaining catalysts also make the adsorbent material magnetic, which enables rapid separation of the adsorbent from the contaminant using an external magnetic field after the adsorption is completed. 62,63 Therefore, compared to the adsorbents reported in the literature, the hydrochar adsorbent prepared in the present study has the potential to remove TC from aqueous solutions.…”

Section: Adsorption Isothermmentioning

confidence: 93%

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Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Zhou

Bao

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Woody biomass has a low hydrothermal-carbonization (HTC) degree and the hydrolysis process of some of its components is similar to that of saccharides. To improve the adsorption performance of wood-chips hydrothermal char (hydrochar) for tetracycline in water, molasses and potassium ferrate (K 2 FeO 4 ) were added to its HTC process; K 2 FeO 4 catalyzed the carbonization of raw materials and the surface of wood chips and saccharides in molasses, along with the iron ions mutually polymerized, added more reactive-oxygen functional groups to the hydrochar surface. The effects of K 2 FeO 4 and molasses on the morphology, pore structure, surface oxygen-containing functional groups, and tetracycline-adsorption properties of hydrothermal carbon were investigated. RESULTS:The strong oxidizing properties of K 2 FeO 4 promoted the hydrolysis of raw material. The modified hydrochar formed more oxygen-containing functional groups and produced Fe O bonds with an increased specific surface area. For the adsorption of tetracycline in water, the pseudo-second-order kinetic model and Freundlich isotherm were more consistent with the hydrochar-adsorption process. The adsorption mechanism favored a combination of physical and chemical adsorption, with chemisorption being predominant. The maximum tetracycline-adsorption capacity of HTC-0.15Fe was 119.7 mg g −1 , which is significantly higher than that of unmodified hydrochar HTC-C (56.4 mg g −1 ). Furthermore, molasses addition effectively improved the hydrochar structure, forming carbon-coated iron-core particles on its surface, which increased adsorption performance.CONCLUSION: K 2 FeO 4 -catalyzed hydrochar produced from wood chips and sugarcane molasses is an effective adsorbent for tetracycline removal from water. This work provides innovative insights into the recycling and effective use of wood chips and molasses for environmental remediation and waste treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Adsorption Isothermmentioning

confidence: 93%

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Zhou

Bao

et al. 2023

J of Chemical Tech & Biotech

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“…Therefore, hydrothermal carbonization is often used with the assistance of other methods (such as physical activation, chemical activation, heteroatom doping, and surface modification) to improve the specific surface area and porosity of the material. For example, according to the report of Ye’s group, the pyrolysis has some disadvantages, such as high energy consumption, corrosion of equipment, and low pore-making efficiency . They found that the hydrothermal carbonization with the assistance of alkali metal (K 2 S 2 O 8 ) catalysis and chemical activation is conducive to the formation of homogeneous-dispersed microporous carbon materials, deriving from corn husk (Figure a).…”

Section: Synthetic Strategies For Biomass-derived Carbon Materialsmentioning

confidence: 99%

“…(a) Synthetic route of carbon material derived from corn husk by hydrothermal carbonization with the assistance of alkali metal catalysis and chemical activation. Panel a was reproduced with permission from ref . Copyright 2022 Elsevier.…”

Section: Synthetic Strategies For Biomass-derived Carbon Materialsmentioning

confidence: 99%

“…For example, according to the report of Ye's group, the pyrolysis has some disadvantages, such as high energy consumption, corrosion of equipment, and low poremaking efficiency. 48 They found that the hydrothermal carbonization with the assistance of alkali metal (K 2 S 2 O 8 ) catalysis and chemical activation is conducive to the formation of homogeneous-dispersed microporous carbon materials, deriving from corn husk (Figure 2a). The performance adsorption of this biomass-derived carbon material was greatly improved, which ascribes to the high specific surface area and proper pore structure.…”

Section: Hydrothermal Carbonizationmentioning

confidence: 99%

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Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

Li,

Lu,

Fang

et al. 2023

Energy Fuels

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The increasing demand for sustainable hydrogen production is driven by the rapid expansion of global energy consumption. Electrocatalytic H 2 production is one of the preferred methods for future energy technology. The hydrogen evolution reaction (HER) has attracted extensive attention as an important half-reaction for traditional water electrolysis. However, cost-effective and efficient electrode materials for HER are scarce. Biomass-derived carbon-based materials could offer a promising solution by utilizing biomass waste through rational engineering design, which can address biomass pollution but also enable the synthesis of effective electrocatalytic materials, aligning with the principles of green chemistry. This study provides a comprehensive review of multiple synthetic methods for producing carbon-based materials from biomass, such as pyrolysis, hydrothermal carbonization, ionothermal carbonization, and molten salt carbonization. The diverse applications of these materials in H 2 production are explored. Effective treatment strategies and valuable insights for future biomass-derived carbon-based material design in H 2 production are also presented. This progress contributes to a better understanding of these materials and offers valuable insights for future explorations.

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Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Qiu,

Li,

et al. 2023

Advanced Sustainable Systems

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With the development of economy and increasing environmental awareness, how to effectively remove organic pollutants in wastewater is a research hotspot. Adsorption is one of the effective methods, and the adsorption material is the key factor to determine the efficiency. In this review, biomass‐derived carbon materials as adsorbents of organic pollutants and the adsorption mechanism are discussed in depth. The effects of carbonization and activation on the morphology and structure of carbon materials; the modification strategies of carbon adsorbents, the adsorption performance of biomass‐derived carbon materials for organic pollutants are described and illustrated; the future work of the biomass‐derived carbon materials is proposed.

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Preparing hierarchical porous carbon with well-developed microporosity using alkali metal-catalyzed hydrothermal carbonization for VOCs adsorption

Cited by 43 publications

References 50 publications

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

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