期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 415, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125635
关键词
Dye adsorption; Methylene blue; Ortho-Nb2O5; Photocatalytic recovery
资金
- Ministry of Research and Higher Education of Republic Indonesia (KEMENRISTEK DIKTI)
- Institut Teknologi Sumatera
Using deformed orthorhombic nano-rod-shaped niobium oxide (ortho-Nb2O5) as an adsorbent can efficiently remove cationic dyes wastewater. Ortho-Nb2O5 has a greater adsorption capacity, stronger affinity to cationic dyes, and photocatalytic properties for dye molecule degradation. The regenerated Ortho-Nb2O5 shows high reusability for further adsorption processes in wastewater treatment.
Nano-rod-shaped niobium oxide with a deformed orthorhombic structure (ortho-Nb2O5) is first demonstrated as a selective adsorbent to remove cationic dyes wastewater. Ortho-Nb2O5 quickly adsorbs methylene blue (MB) with much greater capacity than reported inorganic adsorbents. Furthermore, ortho-Nb2O5 has a stronger affinity to cationic dye than anionic dye because cation exchange is involved in the adsorption process. The dye molecule adsorbed onto ortho-Nb2O5 can be degraded entirely under UV light irradiation because of its photocatalytic properties. Moreover, the regenerated ortho-Nb2O5 shows high reusability for use in additional adsorption processing. As described herein, new insights into the use of ortho-Nb2O5 as a photocatalytically regeneratable adsorbent for wastewater treatment are presented.
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