Water Treatment from MB Using Zn-Ag MWCNT Synthesized by Double Arc Discharge

Abstract

A new type of nano-adsorbent zinc-silver nanoparticles ornamented by multi-walled carbon nanotubes (Zn-Ag MWCNT) was efficiently synthesized by double arc discharge using a newly designed rotating cylinder electrode. Zn-Ag MWCNT was characterized by different instrumental methods to get information about the sample shape, size, and crystallinity. Without irradiation, Zn-Ag MWCNT indicated significant potential for elimination against methylene blue (MB) which is dissolved in deionized water. When the adsorbent concentration was 0.1 g/L at normal 8 pH, the Zn-Ag MWCNTs were efficient in removing 97% of the MB from 40 mg/L that was dissolved in water for 10 min. The dye removal activity of (Zn-Ag) decorated MWCNTs was attributed to the influence of silver and zinc nanoparticles on the MWCNTs. Finally, this approach was both cost-effective and efficient.

Decorative Multi-Walled Carbon Nanotubes by ZnO: Synthesis, Characterization, and Potent Anti-Toxoplasmosis Activity

“…As shown in Figure 2 Figure 2a represented small Zn-NPs size surrounding MWCNT compared with our previous work [32] which may be due to the change of some physical parameters such as rotational speed of the cathode and voltage of power supply [18,33]. On the other hand Figure 2b showed that MWCNT inner radius was smaller than the previous work despite of their larger outer radius (compared with others).…”

New Materials and Technologies for Wastewater Treatment

“…The most classical type of used carbonaceous adsorbent for water treatment are activated carbons, which can be under granular or powdered forms. Yet, other types of preparation can be conducted, as illustrated in the study by Aljohani et al, in which the authors synthetized multi-walled carbon nanotubes (MWCNTs) adorned with Zn and Ag NPs (nanoparticles) [ 5 ]. The preparation of the adsorbent, through the double arc discharge method, allowed cheap production costs, a major limitation for the technology transfer from research to companies.…”

“…This Special Issue (SI) contains the successful submissions [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ] of Materials on the subject area of “New Materials and Technologies for Wastewater Treatment”. The development of new materials that are able to enhance the efficiency of industrial wastewater treatment processes, as well as the modulation of these materials’ properties to improve the recovery of pollutants, has experienced steady progress.…”

May PdCu@f‐MWCNT NPs be an ecotoxicologic risk?

“…Especially, bimetallic NPs composed of MWCNT are widely used for removing pollutants from aquatic mediums. [ 13–16 ] This shows that the bimetallic NPs contaminate the aquatic environment. Therefore, it is necessary to reveal the toxic effects of this newly synthesized NP in aquatic environments.…”