Excellent capability in degrading azo dyes by MgZn-based metallic glass powders.
The lack of new functional applications for metallic glasses hampers further development of these fascinating materials. In this letter, we report for the first time that the MgZn-based metallic glass powders have excellent functional ability in degrading azo dyes which are typical organic water pollutants. Their azo dye degradation efficiency is about 1000 times higher than that of commercial crystalline Fe powders, and 20 times higher than the Mg-Zn alloy crystalline counterparts. The high Zn content in the amorphous Mg-based alloy enables a greater corrosion resistance in water and higher reaction efficiency with azo dye compared to crystalline Mg. Even under complex environmental conditions, the MgZn-based metallic glass powders retain high reaction efficiency. Our work opens up a new opportunity for functional applications of metallic glasses.
WPI Advanced Institute of Materials Research, Tohoku University, Sendai 980-8577, Japan. junqiangwang@wpi-aimr.tohoku.ac.jp
Jun-Qiang
JQ
Wang
Yan-Hui
YH
Liu
Ming-Wei
MW
Chen
Dmitri V
DV
Louzguine-Luzgin
Akihisa
A
Inoue
John H
JH
Perepezko
D000497:Alloys / Q000737:chemistry; D001391:Azo Compounds / Q000737:chemistry* / Q000302:isolation & purification; D002118:Calcium / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification; D003343:Corrosion; D005898:Glass / Q000737:chemistry; D007700:Kinetics; D008274:Magnesium / Q000737:chemistry*; D008854:Microscopy, Electron; D011208:Powders; D013056:Spectrophotometry, Ultraviolet; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry*
D000497:Alloys; D001391:Azo Compounds; D004396:Coloring Agents; D011208:Powders; D014874:Water Pollutants, Chemical; D008274:Magnesium; D015032:Zinc; D002118:Calcium