Three-dimensional cubic ordered mesoporous carbon with chitosan for capacitive deionization disinfection of water
| Autor: | Xiao-Feng Wu, Yunfa Chen, Cuihui Cao, Yu-Ming Zheng |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Exothermic reaction
Horizontal scan rate Chitosan Materials science Aqueous solution Capacitive deionization Health Toxicology and Mutagenesis Diffusion Water General Medicine 010501 environmental sciences 01 natural sciences Pollution Water Purification Disinfection chemistry.chemical_compound chemistry Chemical engineering Specific surface area Electrode Environmental Chemistry Electrodes 0105 earth and related environmental sciences |
| Zdroj: | Environmental science and pollution research international. 27(13) |
| ISSN: | 1614-7499 |
| Popis: | Three-dimensional cubic ordered mesoporous carbon with chitosan (Ia3d-CS), which was synthesized via exothermic reaction between liquid potassium and carbon monoxide gas, was coated on the active carbon (AC) electrode as a capacitive deionization (CDI) disinfection electrode. The results showed that Ia3d-CS-2 as CDI electrode exhibited the quick ion diffusion and strong charge transfer performance, due to the three-dimensional pore structure and specific surface area. The electrode of Ia3d-CS-2 displayed a specific capacity of 191.22 F/g at a scan rate of 100 mV·s−1 in 0.5 M NaCl aqueous solution. In a CDI recycling system, Ia3d-CS-x electrode showed good cyclic stability, and the electrosorption capacity of Ia3d-CS-2 electrode can achieve 1.31 mg/g at 1.2 V in 100 mg/l NaCl aqueous solutions. Subsequently, Ia3d-CS-2 electrode had an excellent disinfection efficiency of killing about 99.99% Escherichia coli within 30 min during the CDI process at applied 1.2 V. Considering those excellent properties of the fabricated Ia3d-CS-x electrode, which should be a better candidate for high-performance deionization application. |
| Databáze: | OpenAIRE |
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