Novel hydrazine hydrate sensor based on”fish-bait” capture mode

Yaping HeSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. ChinaCorrespondence[email protected]

Kexin ZhangSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

Xinchu LiSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

Quan HanSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

Yanyan HuoSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

Xiaohui YangSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

Changhu ZhangSchool of Chemical Engineering, Xi’an University, Xi'an Key Laboratory of Food Safety Testing and Risk Assessment, Xi’an, Shaanxi, P. R. China

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Figures & data

Scheme 1. Schematics of the fabrication process of the PdNPs-5-PADAT/GCE.

Figure 1. SEM imagines of PdNPs/GCE (a) and PdNPs–5-I-PADAT/gce(b).

Figure 2. Cvs of PdNPs–5-I-PADAT/gce in 0. 1 mol/L, pH 7.0 PBS at scan rates of 0.1 V/s with the adding of different N₂H₄ concentration (from a to m: 0, 0.0662, 0.130, 0.198, 0.269, 0.349, 0.433, 0.520, 0.615, 0.721, 0.864, 1.02, 1.2 μmol/L).

Figure 2. Cvs of PdNPs–5-I-PADAT/gce in 0. 1 mol/L, pH 7.0 PBS at scan rates of 0.1 V/s with the adding of different N2H4 concentration (from a to m: 0, 0.0662, 0.130, 0.198, 0.269, 0.349, 0.433, 0.520, 0.615, 0.721, 0.864, 1.02, 1.2 μmol/L).

Figure 3. Amperometric curves obtained upon the addition of an aliquot concentration of N₂H₄ into a continuous stirring of 0.1 M, pH 7.0 PBS under different potentials.

Figure 3. Amperometric curves obtained upon the addition of an aliquot concentration of N2H4 into a continuous stirring of 0.1 M, pH 7.0 PBS under different potentials.

Figure 4. Amperometric curves of PdNPs/GCE and PdNPs–5-I-PADAT/gce obtained upon the addition of an aliquot concentration of N₂H₄ into a continuous stirring of 0.1 M, pH 7.0 PBS.

Figure 4. Amperometric curves of PdNPs/GCE and PdNPs–5-I-PADAT/gce obtained upon the addition of an aliquot concentration of N2H4 into a continuous stirring of 0.1 M, pH 7.0 PBS.

Table 1. Effect of interfering substance on the detecting of 1 μmol/L hydrazine hydrate. Ratio denotes the ratio of the concentration between the interfering substance and hydrazine, i.e. [ion]/[N₂H₄].

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Novel hydrazine hydrate sensor based on”fish-bait” capture mode

Table 1. Effect of interfering substance on the detecting of 1 μmol/L hydrazine hydrate. Ratio denotes the ratio of the concentration between the interfering substance and hydrazine, i.e. [ion]/[N₂H₄].

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Novel hydrazine hydrate sensor based on”fish-bait” capture mode

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Table 1. Effect of interfering substance on the detecting of 1 μmol/L hydrazine hydrate. Ratio denotes the ratio of the concentration between the interfering substance and hydrazine, i.e. [ion]/[N2H4].

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Table 1. Effect of interfering substance on the detecting of 1 μmol/L hydrazine hydrate. Ratio denotes the ratio of the concentration between the interfering substance and hydrazine, i.e. [ion]/[N₂H₄].