Magnetic composite material modified ion imprinting polymer (IIP@GO-Fe3O4) based on GO from kesambi wood (Schleichera oleosa) was successfully synthesized by using a precipitation method. The physico-chemical characterization uses XRD, FTIR, BET-BJH and SEM-EDX. IIP@GO-Fe3O4 was applied to adsorb Cr(VI) from the water sample by utilizing the batch system. Various adsorption parameters for Cr(VI) such as adsorbent mass, pH, contact time and temperature were optimized in this investigation. The Cr(VI) maximum adsorption occurred when the adsorbent mass usage 0.04 g, pH 2, 40 min of contacts and at the temperature of 323 K. In this study ten kinetic and eight isothermal adsorption models were used to investigate the adsorption mechanism of Cr(VI) onto IIP@GO-Fe3O4. The kinetic modelling shows that the adsorption of Cr(VI) onto IIP@GO-Fe3O4 corresponds to the pseudo-second-order (PSO) model, while the adsorption isotherm corresponds to the Dubinin-Radushkevich (DKR) model with an adsorption capacity of 8.502 mg/g. The thermodynamic study has shown that the adsorption process can take place at a temperature of 323 K. The result showed that a higher adsorption selectivity on IIP@GO-Fe3O4 compares to NIP@GO-Fe3O4. The adsorbent materials gave better reusability because their adsorptive capacity remained at the same level (although it was used at least ten times).

Evaluation of magnetic material IIP@GO-Fe3O4 based on Kesambi wood (Schleichera oleosa) as a potential adsorbent for the removal of Cr(VI) from aqueous solutions

Sustainable and efficient technologies for removal and recovery of toxic and valuable metals from wastewater: Recent progress, challenges, and future perspectives

Ultrasensitive detection of trace Hg2+ by SERS aptasensor based on dual recycling amplification in water environment

Biochar is a low cost, porous and solid material with an extremely high carbon content, various types of functional groups, a large specific surface area and many other desirable characteristics. Thus, it is often used as an adsorbent or a loading matrix. Nano-magnesium oxide is a crystalline material with small particles and strong ion exchangeability. However, due to the high surface chemical energy, it easily forms agglomerates of particles. Therefore, to combine the advantages of biochar and magnesium, metal magnesium nanoparticles can be loaded onto the surface of biochar with different modification techniques, resulting in biochars with low cost and high adsorption performance to be used as an adsorption matrix (collectively referred to as Mg@BC). This review presents the effects of different Mg@BC preparation methods and synthesis conditions and summarizes the removal capabilities and adsorption mechanisms of Mg@BC for different types of pollutants in water. In addition, the review proposes the prospects for the development of Mg@BC to solve various problems in the future. 

Preparation, adsorption performance and mechanism of MgO-loaded biochar in wastewater treatment: A review.

Construction of carbon dots modified hollow g-C3N4 spheres via in situ calcination of cyanamide and glucose for highly enhanced visible light photocatalytic hydrogen evolution

A regenerable ion-imprinted magnetic biocomposite for selective adsorption and detection of Pb2+ in aqueous solution.

Recent advances in the design of semiconductor hollow microspheres for enhanced photocatalyticv water splitting

A novel CRISPR/Cas14a system integrated with 2D porphyrin metal-organic framework for microcystin-LR determination through a homogeneous competitive reaction.

Shan Xiang

Papers

A regenerable ion-imprinted magnetic biocomposite for selective adsorption and detection of Pb2+ in aqueous solution.

Recent advances in the design of semiconductor hollow microspheres for enhanced photocatalyticv water splitting

A novel CRISPR/Cas14a system integrated with 2D porphyrin metal-organic framework for microcystin-LR determination through a homogeneous competitive reaction.