Adsorption of hydrogen arsenate and dihydrogen arsenate ions from neutral water by UiO-66-NH2
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 263-268 |
| Journal / Publication | Journal of Environmental Management |
| Volume | 247 |
| Online published | 25 Jun 2019 |
| Publication status | Published - 1 Oct 2019 |
| Externally published | Yes |
Link(s)
Abstract
The metal-organic framework (MOF) UiO-66-NH2 was synthesized with different substrate to solvent ratios and its morphology, surface area, pore distributions, and NMR, XRD, and TGA-FTIR patterns were obtained. Adsorption tests at pH 7 and 25 °C showed that the produced UiO-66-NH2 has a hydrogen arsenate adsorption capacity of 76.9 mg/g. With the affinity onto Zr clusters, this MOF also can adsorb phosphate ions from water. Treatment with 1–4 M hydrochloric acid (HCl) protonated the amine groups in the MOF. Treatment with 1 M HCl at 25 °C for 6 h maximized the adsorption capacity of UiO-66-NH2 to 161.3 mg/g, such that the protonated amine groups accounted for 53.7% of the adsorption of arsenate from the water. The use of excessively strong acid at elevated temperature reduced the adsorption capacity.
Research Area(s)
- Acid treatment, Adsorption, Arsenate, Capacity, UiO-66-NH2
Citation Format(s)
Adsorption of hydrogen arsenate and dihydrogen arsenate ions from neutral water by UiO-66-NH2. / Chang, Zu-Wei; Lee, Yu-Jen; Lee, Duu-Jong.
In: Journal of Environmental Management, Vol. 247, 01.10.2019, p. 263-268.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
