Aminopropyl-functionalized mesoporous carbon (APTMS-CMK-3) as effective phosphate adsorbent

Yang, Yadong; Wang, Juanjuan; Qian, Xiaoqing; Shan, Yuhua; Zhang, Hongcheng

doi:10.1016/j.apsusc.2017.08.213

Cited by 28 publications

(15 citation statements)

References 43 publications

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“…Therefore, there is still demand to search for new efficient adsorbent for 2,4-D. The recent progress in obtaining novel functionalized nanomaterials such mesoporous carbons has open new path for their applications (Barczak et al 2015;Goscianska et al 2016aGoscianska et al , b, 2017Yang et al 2018). In the present study, 3-aminopropyltriethoxysilane-functionalized mesoporous carbons were applied for the first time as adsorbents of 2,4-D (Fig.…”

Section: Introductionmentioning

confidence: 84%

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Gościańska

Olejnik

2019

Adsorption

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2,4-Dichlorophenoxyacetic acid (2,4-D) is the most commonly used herbicide in plant protection products. 2,4-D is poorly biodegradable and it is often found in aquatic environment. The development of an effective way to reduce the amount of this toxic contaminant from aqueous solution became an urgent issue. Therefore, in this study series of aminosilane-grafted mesoporous carbons were synthesized, characterized and then applied as adsorbents for 2,4-D. The impact of various factors such as the contact time (0-360 min) of herbicide with adsorbents, pH (2-11), temperature (25, 45, 60 °C) and initial concentration (6.25-150 mg/l) of the 2,4-D on the sorption capacity of materials was analyzed. The results proved that functionalization of mesoporous carbons with aminosilane increased the sorption capacity (q e = 142-191 mg/g) towards herbicide compared to pristine material (q e = 109 mg/g). The functional groups presented on the surface of materials enhanced the interaction between mesoporous carbons and herbicide. The most effective adsorbent for 2,4-D was the material that had the highest amount of basic groups on the surface (2.79 mmol/g) of all samples tested (0.06-0.52 mmol/g). For all studied materials the Langmuir model was the most suitable to describe the isotherms of 2,4-D adsorption (R 2 = 0.999). While the kinetics of herbicide adsorption on the functionalized mesoporous carbons were best fitted to the pseudo-second-order model. The presented study proved that the aminosilane-grafted mesoporous carbons could be promising adsorbents for effective removal of 2,4-D from aqueous environment.

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Section: Introductionmentioning

confidence: 84%

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Gościańska

Olejnik

2019

Adsorption

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“…The most frequently used soft templates are surfactants and block copolymers, which are expensive and nonrenewable . On the other hand, hard templates such as porous silica , and zeolite , have also been intensively studied for the synthesis of porous carbons. Carbons with a well-ordered porous structure can be derived from silica materials such as SBA-15, which is a huge challenge for many other hard templates.…”

Section: Introductionmentioning

confidence: 99%

Salt Template Synthesis of Nitrogen and Sulfur Co-Doped Porous Carbons as CO₂ Adsorbents

Shi

Yan

Cui

et al. 2019

ACS Sustainable Chem. Eng.

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Because of their high stability, low cost, and tunable porosity, porous carbons are of great interest as CO 2 adsorbents. The influences of porosity and heteroatom doping on CO 2 adsorption depend on the specific adsorption conditions. In the current work, nitrogen and sulfur co-doped carbons were prepared with the assistance of an NaCl template, and the effects of different physicochemical parameters on CO 2 adsorption at 20 bar were investigated. The co-doped carbons were synthesized with sodium lignosulfonate as the starting material and urea as the nitrogen source. The material showed a high specific surface area and pore volume of 973 m 2 /g and 0.50 cm 3 /g, respectively. Sulfur-doped carbons were also prepared without the addition of urea. Sulfur doping demonstrated positive effects on CO 2 adsorption at a low pressure. The sulfur-doped carbons showed adsorption properties similar to those of the co-doped carbons. The CO 2 uptake at 298 K and 20 bar was in the range of 4.3−7.5 mmol/g. The experiment results also revealed that the uptake at 20 bar correlated to the specific surface area of the carbon, while the doped heteroatoms only had secondary influences.

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“…The microspheres of MCC grafted with AM show almost no absorption. The amino and carboxyl groups were introduced successively onto the MCC- g -AM by reaction modification of EDA and PA to MCC- g -AM, and the main reason for this was assumed to be electrostatic interactions, 28 which makes the adsorption rate increase from 20.7% to 37.3%. Chemical modification contributes to the adsorption of phosphate, especially after the chelation of Fe( iii ) ions, where the adsorption of phosphate could reach 89.7%, and this is attributed to the preference of Fe( iii ) ions (Lewis acid) bonded with phosphate (Lewis base).…”

Section: Resultsmentioning

confidence: 99%

Controlled preparation of a MCC-g-AM/EDA/PA loaded Fe(iii) adsorbent by the pre-radiation grafting method and its application for the adsorption removal of phosphate

Zhao

Yang

et al. 2021

RSC Adv.

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Aminopropyl-functionalized mesoporous carbon (APTMS-CMK-3) as effective phosphate adsorbent

Cited by 28 publications

References 43 publications

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Salt Template Synthesis of Nitrogen and Sulfur Co-Doped Porous Carbons as CO₂ Adsorbents

Controlled preparation of a MCC-g-AM/EDA/PA loaded Fe(iii) adsorbent by the pre-radiation grafting method and its application for the adsorption removal of phosphate

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Aminopropyl-functionalized mesoporous carbon (APTMS-CMK-3) as effective phosphate adsorbent

Cited by 28 publications

References 43 publications

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Removal of 2,4-D herbicide from aqueous solution by aminosilane-grafted mesoporous carbons

Salt Template Synthesis of Nitrogen and Sulfur Co-Doped Porous Carbons as CO2 Adsorbents

Controlled preparation of a MCC-g-AM/EDA/PA loaded Fe(iii) adsorbent by the pre-radiation grafting method and its application for the adsorption removal of phosphate

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Salt Template Synthesis of Nitrogen and Sulfur Co-Doped Porous Carbons as CO₂ Adsorbents