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1 article(s) from Phong, Le Thi Hong

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode

Vu Ngoc Hoang,
Dang Thi Ngoc Hoa,
Nguyen Quang Man,
Le Vu Truong Son,
Le Van Thanh Son,
Vo Thang Nguyen,
Le Thi Hong Phong,
Ly Hoang Diem,
Kieu Chan Ly,
Ho Sy Thang and
Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

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Figure 1: Images of aqueous suspension of TiO₂/GQDs samples (a) under white light and (b) under UV light. (c)...

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Figure 2: (a) XRD patterns of TiO₂, GQDs, and (1:4)TiO₂/GQDs in suspension form. (b) XRD pattern of (1:4)TiO₂...

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Figure 3: HRTEM images of (a) TiO₂, (b) GQDs, (c) (1:4)TiO₂/GQDs, and (d) of (1:4)TiO₂/GQDs with high magnifi...

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Figure 4: EDX mapping of (1:4)TiO₂/GQDs.

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Figure 5: (a) CV curves at different electrodes in a solution (0.05 M BR buffer, pH 4) containing C_URI = C_HYP...

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Figure 6: (a) CV curves of URI and HYP at equal concentrations of 25 µM in 0.05 M BR pH 2–6 at the (1:4)TiO₂/...

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Figure 7: (a) CV curves of (1:4)TiO₂/GQDs-GCE in 0.05 M BR buffer (pH 3) with C_URI = C_HYP = 25 µM; scanning r...

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Scheme 1: Proposed oxidation mechanisms of URI and HYP at the (1:4)TiO₂/GQDs-GCE.

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Figure 8: DPV curves at the (1:4)TiO₂/GQDs-GCE. (a) 0.05 M BR pH 3 with C_URI = C_HYP = 1.00–15.26 µM. (b) Line...

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Figure 9: The RSD of ten replicate measurements of (a) URI and (b) HYP at the (1:4)TiO₂/GQDs-GCE in 0.05 M BR...

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Figure 10: Effect of possible interferents. (a) Inorganic compounds and (b) organic compounds.

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Published 20 Jun 2024

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Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO2/graphene quantum dot-modified electrode

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode