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Abstract
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Boron/Nitrogen doped carbon quantum dots (BNCQD) was synthesized and its physiochemical and optical
properties were investigated by FT-IR, XRD, XPS, TEM and spectroscopic methods. The freshly prepared BNCQD
shows a strong green fluorescence at 400 nm excitation, and PO4
3- anion can readily turn-on the fluorescence of
BNCQD through forming stable complex. Then, we designed a turn-on fluorescence sensor for phosphate ion detection
which indicate a high selectivity towards PO4
3- ions in comparison with the other anions with a limit of detection of 0.1
μM. It was approved that BNCQD is highly sensitive and selective to detect PO4
3- anion in wastewater
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