Facile one-pot synthesis of iron nanoparticles immobilized into the porous hydrochar for catalytic decomposition of phenol

In this study, biogenic activated carbon were successfully synthesized from Citrus limetta pulp residue, and applied to remove fluoride from an aqueous solution. For the synthesis activated carbon of biosorbents, raw materials were heated in muffle furnace at two different temperatures i.e. (250 °C and 500 °C) and were noted as ACP-250 and ACP-500. The prepared biosorbents were characterized through scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and X-ray diffraction (XRD). Batch adsorption studies were performed with varying temperature, dosage, pH, and various initial concentrations. Adsorption isotherms and the reaction kinetics were also analyzed in order to understand the adsorption mechanism. The results of this study shows that the maximum removal achieved was approximately (86 and 82) % of ACP-500 and ACP-250, respectively. The isotherm results show that the Langmuir isotherm model fitted better, with monolayer adsorption capacity of 12.6 mg/g of fluoride. However, for kinetic study, the pseudo-second-order kinetics fitted well. The synthesized materials at different temperature were highly effective for the removal of fluoride from water, with reusability of three to four times.

show abstract

“…The formation of the carbides may increase the mechanical strength of the synthesized nano/micro size material. 34…”

Section: Ftir Analysis Of Biosorbentmentioning

confidence: 99%

Adsorptive Removal of Fluoride from Aqueous Solution by Biogenic Iron Permeated Activated Carbon Derived from Sweet Lime Waste

Ibrahim

Siddique

Verma

et al. 2019

ACSi

View full text Add to dashboard Cite

show abstract

“…For instance, Gai et al [109] prepared pine sawdust HC microspheres adding Fe salts to the liquid solution (200 • C, 1 h) and applied them for enhancing phenol degradation (used as tar model compound). Their materials showed a tight Fe embedment and uniform dispersion in the carbon matrix; in addition, the authors demonstrated that both the particle size and porous development of the so obtained HCs could be tuned up.…”

Section: Catalystmentioning

confidence: 99%

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

et al. 2018

View full text Add to dashboard Cite

Active research on biomass hydrothermal carbonization (HTC) continues to demonstrate its advantages over other thermochemical processes, in particular the interesting benefits that are associated with carbonaceous solid products, called hydrochar (HC). The areas of applications of HC range from biofuel to doped porous material for adsorption, energy storage, and catalysis. At the same time, intensive research has been aimed at better elucidating the process mechanisms and kinetics, and how the experimental variables (temperature, time, biomass load, feedstock composition, as well as their interactions) affect the distribution between phases and their composition. This review provides an analysis of the state of the art on HTC, mainly with regard to the effect of variables on the process, the associated kinetics, and the characteristics of the solid phase (HC), as well as some of the more studied applications so far. The focus is on research made over the last five years on these topics.

show abstract

“…The reduction ability of these functional groups under HTC condition would contribute to the formation of corresponding metal nanoparticles. This phenomenon has been confirmed in recent study by Gai et al, who prepared iron nanoparticles supported hydrochar through a facile one-pot HTC of lignocellulosic matrix and iron(III) nitrate [4]. Sun et al also reported a one-pot synthesis of cobalt nanoparticles supported hydrochar achieved by co-HTC of mixtures of rice bran biomass and cobalt source [7].…”

Section: Introductionmentioning

confidence: 54%

“…As an eco-friendly and cost-effective approach, HTC technique has attracted much attention due to its moderate reaction temperatures in autoclave with self-generated pressure. In recently years, many efforts have been devoted to the HTC of various biomass in order to prouduce functional hydrochar materials that exhibited a wide variety of applications in adsorption, catalyst support and solid fuel [2][3][4][5][6]. For example, rice bran biomass was hydrothermally carbonized to produce carbon microspheres that could be used as a nanoparticle catalyst support [7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nano silver immobilized hydrochar derived from hydrothermal carbonization of tobacco stem

Liang

Liu

Wang

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

In this present study, silver nanoparticles (AgNPs) immobilized hydrochar was prepared through a facile one-pot co-hydrothermal carbonization of tobacco stem and silver nitrate. The effect of concentration of silver precursor, hydrothermal temperature and reaction time on the chemical compositions, structural property, combustion performance, as well as gaseous products release behavior of the resultant AgNPs immobilized hydrochar were evaluated. The co-hydrothermal treatment decreased the volatile matter while increased the ash content of hydrochar. Single-phase AgNPs were successfully generated and evenly immobilized onto the hydrochar during the hydrothermal process. The immobilized AgNPs played a notable catalytic role during the char combustion stage, thereby decreased the ignition temperature, burnout temperature and maximum rate temperature for char combustion. Meanwhile, TG-FTIR analysis suggested that the emission amount of harmful gas CO during hydrochar combustion was reduced due to the catalytic effect of AgNPs. This phenomenon may indicate the appropriate amount of nanoparticles immobilization could enhance the combustion behavior of hydrochar fuel.

show abstract

Facile one-pot synthesis of iron nanoparticles immobilized into the porous hydrochar for catalytic decomposition of phenol

Cited by 135 publications

References 54 publications

Adsorptive Removal of Fluoride from Aqueous Solution by Biogenic Iron Permeated Activated Carbon Derived from Sweet Lime Waste

Adsorptive Removal of Fluoride from Aqueous Solution by Biogenic Iron Permeated Activated Carbon Derived from Sweet Lime Waste

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

Preparation and characterization of nano silver immobilized hydrochar derived from hydrothermal carbonization of tobacco stem

Contact Info

Product

Resources

About