Xuecai Han’s research while affiliated with Institute of Scientific and Technical Information of China and other places

A composite was created by incorporating the quantum dot-enhanced SiO2 nanoparticles within this hydrogel. Based on this composite, a temperature-controlled fluorescent probe for DCP was developed. A meticulous examination of this probe revealed its attributes and factors affecting its performance. By using temperature modulation, the probe was adept at detecting DCP concentrations ranging between 1.0×10−6 and 9.0×10−6 mol/L. Such a probe offers remarkable selectivity, repeatability, and robust stability, so that the detection of DCP can be carried out at different temperatures, and a fast, reliable, sensitive and low-cost intelligent detection method is realized.

A novel fiber optic sensor based on hydrogel-immobilized enzyme complex was developed for the simultaneous measurement of dual- parameter, the leap from a single parameter detecting fiber optic sensor to a fiber optic sensor that can continuously detect two kinds of parameters was achieved. By controlling the temperature from high to low, the function of fiber sulfide sensor and fiber DCP sensor can be realized, so as to realize the continuous detection of dual-parameter. The different variables affecting the sensor performance were evaluated and optimized. Under the optimal conditions, the response curves, linear detection ranges, detection limits and response times of the dual-parameter sensor for testing sulfide and DCP were obtained, respectively. The sensor displays high selectivity, good repeatability and stability, which have good potentials in analyzing sulfide and DCP concentration of practical water samples.

Iron (III) tetrasulfophthalocyanine (Fe (III) PcTs) has been used as a biomimetic enzyme to catalyze the oxidation of 2-CP. Fe (III) PcTs has been Prepared and characterized, including FT-IR, SEM, XRD, UV-Vis and element analysis of Fe (III) PcTs. It showed Fe (III) PcTs has high purity. We studied the oxidation of 2-CP catalyzed by Fe (III) PcTs, the intensities of absorption at 510 nm.