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

By M. Manyangadze, Nyaradzai M.H. Chikuruwo, T. B. Narsaiah, C. Chakra, M. Radhakumari, G. Danha. 2020

161 citations recorded by the source corpus.

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.

Subfields: Biomedical Engineering, Organic Chemistry, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/fc75ea7f80525be8c599d774a4ffc8a58fbec852

Citations in the corpus

• A state-of-the-art review on wastewater treatment techniques: the effectiveness of adsorption method (2021, unknown): “…et al. 2019) 2 Natural zeolite Dye 177.75 60% (Pan et al. 2020) 3 Fe3O4 nanoparticles Pd 369.0–523.6 98% (Xin et al. 2012) Cd Cu 4 SiO2 Cu 6.35 – (Manyangadze et al. 2020) Pb 5.20 5 Anionic surfactant (SDS) Cationic dyes 18 – (Pham et al. 2020) 6 DS-Zn/Al LDHs Organic pollutant 87–149.3 –…”