Recently, the reporter learned from Shanghai Jiaotong University that the team of professor Zhou Baoxue of the school's School of Environmental Science and Engineering has made breakthroughs in the monitoring of chemical oxygen demand (COD), the treatment of refractory toxic and harmful organic pollutants, and the decomposition of sunlight to produce hydrogen. It has been published online as a review article in Chemical Review.
Nano-TiO2 has important application prospects in the fields of environmental sensors, environmental purification and sunlight utilization, and has become a hot spot in the field of environmental functional materials in recent years. However, the traditional nano-TiO2 material has serious charge recombination, low quantum efficiency, and large band gap, which restricts the wide application of nano-TiO2.
Based on the design, preparation, structure and performance of TiO2 nanotube array materials, the team effectively solved the problems of serious photo-generated charge recombination and low quantum efficiency of powder nano-TiO2 materials, and invented a new type of TiO2 nanotube array COD The sensor, and thus established a fast, accurate and green new photoelectric catalytic COD monitoring method, which laid the foundation for the rapid and accurate determination of COD and wireless sensor monitoring of COD.
At present, the team has developed a series of prototypes for COD photoelectric catalytic monitoring, which are used in various environmental monitoring. At the same time, based on the prepared titanium dioxide nanotube array materials and related composite materials, a new type of photocatalytic wastewater fuel cell system was established.
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