Jia-Cheng E. Yang

Yolk–shell structured CoFe2O4 microspheres as novel catalysts for peroxymonosulfate activation for efficient degradation of butyl paraben

Three-dimensional yolk–shell structured CoFe2O4 microspheres were successfully prepared by hydrothermal method coupled calcination. The obtained magnetic yolk–shell microspheres exhibit excellent ability to activate peroxymonosulfate for efficient degradation of butyl paraben in wastewater followed by easy magnetic separation.

Granulous KMS-1/PAN composite for Cs+ removal

A novel KMS-1/PAN composite was successfully and simply fabricated by combining KMS-1 with PAN. The KMS-1/PAN combines the efficient, rapid adsorption of Cs+ by KMS-1 with granulation for easy separation after adsorption. The maximum Cs+ adsorption capacity of KMS-1/PAN was estimated to be 72.00 mg g−1 according to the Langmuir model.

One-step fabrication of recycled Ag nanoparticles/graphene aerogel with high mechanical property for disinfection and catalytic reduction of 4-nitrophonel

ABSTRACT Fabrication of smart composites with expected removal property and excellent recycle performance for micro-pollutants including microbes and organic contaminants without formation of second-pollutants is highly desired. In this work, Ag nanoparticles (Ag NPs) homogenously loaded on graphene aerogel (GA) as Ag NPs/GA was facilely fabricated by a one-step process and the composite was characterized in detail. The bactericidal performance of the composite towards escherichia coli (E. coli) was evaluated and the catalytic activity was probed for the reduction of 4-nitrophenol (4-NP). Results showed that the composite contains about 44.4 wt% of well-dispersed Ag NPs with diameters ranging from 10 to 100 nm. Compared with the bare Ag particles or GA, Ag NPs/GA exhibited an enhanced bactericidal performance for 8-lg of E. coli cells with 100% inactivation rate and catalytic activity for 4-NP with 96.6% degradation rate, respectively. Impressively, the 100% inactivation rates for 8-lg of E. coli remained after 7 recycles and the releasing silver was negligible compared with the loaded Ag NPs. Moreover, the used Ag NPs/GA for the catalytic reduction of 4-NP can be regenerated easily by calcination in inert atmosphere. Hence, Ag NPs/GA can be regarded as a promising and cost-efficient composite for environmental remediation. GRAPHICAL ABSTRACT