Controllable synthesis of copper sulfide for nonenzymatic hydrazine sensing

One‐Step Transformation from Cu2S Nanocrystal to CuS Nanocrystal with Photocatalytic Properties

“…Recent studies on optimizing the performance of materials by controllable synthesis have demonstrated the close correlation of compositions and structures to the essential property of materials . Such as various CuS structures were synthesized by changing the type of metal precursor, among which the flower‐like CuS exhibited highest electrochemical performance . Some research controlled the transformation from Cu 1.8 S to CuS nanocrystals, to study the composition and phase‐dependent properties .…”

“…Some research controlled the transformation from Cu 1.8 S to CuS nanocrystals, to study the composition and phase‐dependent properties . Most of these studies examined the effects of differences in sole structures or in both components and structures on the properties of materials . Although detailed and intensive study on the Cu x S nanocrystals properties has been made, there remains a shortage to exclude the influence of the architectural difference and only consider the effect of the composition on the properties of the materials.…”

A Highly Selective and Colorimetric Fluorescent Probe for Hydrazine Detection in Water Samples

“…Many N2H4 fluorescent probes have been designed and used for biological imaging and N2H4 detection in water samples, but visible colorimetric fluorescent probes are rare. [34][35][36][37][38] In this work, probe 1 exhibited different color changes to different concentrations (50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 μM) of N2H4. The solution of the probe showed different color changes to different concentrations of N2H4 graded gradually from colorless to pink, which could be observed by the naked eye under UV light at 365 nm.…”

“…29,30 Although many kinds of fluorescent probes have been applied to detect N2H4, the development of an efficient and visible colorimetric probe to detect N2H4 in water is badly needed. 31,32 In our previous studies, one probe was developed to detect the level of N2H4 in water, 33 but the visible colorimetric changes were not obvious. In order to found a visible colorimetric fluorescent probe, a new probe (E)-3-(6-hydroxynaphthalen-2-yl)-1-(4nitrophenyl) prop-2-en-1-one (probe 1) was developed based on the Michael reaction in this work, with naphthalene as the fluorophore, and α, β-unsaturated ketone as the Michael acceptor.…”

Electrostatic Self‐Assembled Bracelet‐Like Au@Pt Nanoparticles: An Efficient Electrocatalyst for Highly Sensitive Non‐Enzymatic Hydrogen Peroxide Sensing

“…Three different working potentials (À 0.2, À 0.1, and 0 V) were employed for the I-t test, as the applied potential is a crucial but often overlooked parameter that has an impact on sensor sensitivity. [53] The low applied potential usually enables a lower noise and less interference as compared with high potential. Although such low potential could result in a low amperometric signal and low sensitivity, whereashigh applied potential renders a strong current response and high sensitivity but leads to large noise and impacts on the limit of detection (LOD).…”