Porous composite architecture bestows Fe-based glassy alloy with high and ultra-durable degradation activity in decomposing azo dye
| Autor: | Yang Shao, Xinglong Yang, Jiajia Si, Lingxiang Shi, Kefu Yao, Hengwei Luan, Jia-Lun Gu |
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| Rok vydání: | 2019 |
| Předmět: |
021110 strategic
defence & security studies Environmental Engineering Materials science Amorphous metal Health Toxicology and Mutagenesis Composite number Dispersity 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Electrocatalyst 01 natural sciences Pollution Durability Amorphous solid Wastewater Chemical engineering Environmental Chemistry Porosity Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Journal of hazardous materials. 388 |
| ISSN: | 1873-3336 |
| Popis: | Since the treatment of wastewater containing azo dye presents problems worldwide, it is important to seek effective materials and technology for the purification of wastewater containing azo dye. Fe-based metallic glasses have been identified as promising materials for the decomposition of dyeing wastewater due to their high chemical activity resulting from their amorphous structure. It is imperative to further improve their degradation performance, and especially their durability, for potential application in wastewater purification. Here, composite structures constructed of porous Ni and amorphous Fe78Si9B13 powder with markedly enhanced degradation performance in Orange II solution were obtained by utilizing a magnet. Due to the favorable effects of structural electrocatalysis and high dispersity of the distinctive porous architecture in addition to its self-cleaning properties, the solid-liquid interface exhibited strong, continuous electrical and mass transport, and a compelling improvement in degradation performance was achieved. Based on degradation tests and spectrum analysis, the kinetic rate was improved over 11-fold. Moreover, ultra-high durability over 100 cycles was revealed in cycling tests. The results indicate that wastewater degradation performance can be greatly enhanced by properly combining Fe-based metallic glasses with porous material. |
| Databáze: | OpenAIRE |
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