Enhancing adsorption capacity of nano-adsorbents via surface modification: A review

M. Manyangadze; N. H.M. Chikuruwo; T. B. Narsaiah; C. S. Chakra; M. Radhakumari; G. Danha

doi:10.1016/j.sajce.2019.11.003

Enhancing adsorption capacity of nano-adsorbents via surface modification: A review

M. Manyangadze, N. H.M. Chikuruwo, T. B. Narsaiah, C. S. Chakra, M. Radhakumari, G. Danha

Research output: Contribution to journal › Review article › peer-review

24 Citations (Scopus)

Abstract

In this review, the role of surface modification of nanoparticles to enhance their performance as adsorbents was explored. Performance was assessed by comparisons on adsorption capacities of differently modified nanoparticles (silica, iron, and alumina based nanoparticles) on different heavy metal ions (Cu, Cd, Co, Ni, Pb, As, Cr, Zn, Mn, and Hg). A comparison of pure and modified materials revealed that the modified materials gave superior adsorption capacities. A close relationship was observed between the various modification methods and the adsorption capacities of particles synthesized by hydrothermal methods giving the highest adsorption capacities. Surface modification also had a direct effect on the specific surface area which decreased with the degree of functionalization. The adsorption capacity was however generally observed to increase with the degree of functionalization.

Original language	English
Pages (from-to)	25-32
Number of pages	8
Journal	South African Journal of Chemical Engineering
Volume	31
DOIs	https://doi.org/10.1016/j.sajce.2019.11.003
Publication status	Published - Jan 2020

All Science Journal Classification (ASJC) codes

Catalysis
Education
Energy (miscellaneous)
Process Chemistry and Technology
Fluid Flow and Transfer Processes
Filtration and Separation

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10.1016/j.sajce.2019.11.003

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title = "Enhancing adsorption capacity of nano-adsorbents via surface modification: A review",

abstract = "In this review, the role of surface modification of nanoparticles to enhance their performance as adsorbents was explored. Performance was assessed by comparisons on adsorption capacities of differently modified nanoparticles (silica, iron, and alumina based nanoparticles) on different heavy metal ions (Cu, Cd, Co, Ni, Pb, As, Cr, Zn, Mn, and Hg). A comparison of pure and modified materials revealed that the modified materials gave superior adsorption capacities. A close relationship was observed between the various modification methods and the adsorption capacities of particles synthesized by hydrothermal methods giving the highest adsorption capacities. Surface modification also had a direct effect on the specific surface area which decreased with the degree of functionalization. The adsorption capacity was however generally observed to increase with the degree of functionalization.",

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T1 - Enhancing adsorption capacity of nano-adsorbents via surface modification

T2 - A review

AU - Manyangadze, M.

AU - Chikuruwo, N. H.M.

AU - Narsaiah, T. B.

AU - Chakra, C. S.

AU - Radhakumari, M.

AU - Danha, G.

PY - 2020/1

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N2 - In this review, the role of surface modification of nanoparticles to enhance their performance as adsorbents was explored. Performance was assessed by comparisons on adsorption capacities of differently modified nanoparticles (silica, iron, and alumina based nanoparticles) on different heavy metal ions (Cu, Cd, Co, Ni, Pb, As, Cr, Zn, Mn, and Hg). A comparison of pure and modified materials revealed that the modified materials gave superior adsorption capacities. A close relationship was observed between the various modification methods and the adsorption capacities of particles synthesized by hydrothermal methods giving the highest adsorption capacities. Surface modification also had a direct effect on the specific surface area which decreased with the degree of functionalization. The adsorption capacity was however generally observed to increase with the degree of functionalization.

AB - In this review, the role of surface modification of nanoparticles to enhance their performance as adsorbents was explored. Performance was assessed by comparisons on adsorption capacities of differently modified nanoparticles (silica, iron, and alumina based nanoparticles) on different heavy metal ions (Cu, Cd, Co, Ni, Pb, As, Cr, Zn, Mn, and Hg). A comparison of pure and modified materials revealed that the modified materials gave superior adsorption capacities. A close relationship was observed between the various modification methods and the adsorption capacities of particles synthesized by hydrothermal methods giving the highest adsorption capacities. Surface modification also had a direct effect on the specific surface area which decreased with the degree of functionalization. The adsorption capacity was however generally observed to increase with the degree of functionalization.

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Enhancing adsorption capacity of nano-adsorbents via surface modification: A review

Abstract

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