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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Analytical Chemists I |
| Room No. |
Room 202 |
| Time |
THU 10:08-10:12 |
| Code |
ANAL1.O-18 |
| Subject |
Graphene oxide as a peroxidase mimetic catalyst for detection of Cr(VI) ions |
| Authors |
Nguyen Ngoc Nghia, Huy B.t.1, Yong-ill Lee1,*
Changwon National University, Korea
1Department of Chemistry, Changwon National University, Korea
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| Abstract |
Graphene oxide (GO) was used as a peroxidase mimetic catalyst to detect hexavalent chromium (Cr(VI)) in aqueous solutions. The color change of tetramethyl benzidine (TMB) which was catalyzed by GO. The color of the probe will be turned “OFF” and “ON” by adding 8-hydroxyquinoline (8-HQ) and Cr(VI), respectively. The mechanism could be explained due to the chelation reaction between 8-HQ and Cr(VI). The color change can be observed by naked eyes or UV-vis spectrophotometer. Under the optimal experimental conditions, the prepared probe exhibited high selectivity, limit of detection (6 nM), and large linear range. This study was applied successfully for Cr(VI) detection in real water.
Keywords: hexavalent chromium; chelate; graphene oxide; mimetic catalyst; naked eyes. |
| E-mail |
nghia10194@gmail.com |
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123rd General Meeting of the KCS