研究目的
To synthesize and study the combined colloidal composition which must have the enhanced photocatalytic properties (high photoactive properties at the wide spectral range of the external light irradiation; relatively weak dependence of the organics photodecomposition effect from the adsorption processes).
研究成果
The photoactive ZnO suspension containing zinc nitrate and small ZnO nanoparticles accelerates the photodecomposition of organic contaminations and increases the working spectral diapason of the effective external radiation. The suspension demonstrates high photocatalytic properties under UV irradiation, with dye photodecomposition proceeding through three different photochemical processes.
研究不足
The study focuses on the photodecomposition of a specific dye (Chicago Sky Blue) and may not be directly applicable to other organic contaminants. The effectiveness of the method is dependent on the spectral range of the external light irradiation.
1：Experimental Design and Method Selection:
The study involved the synthesis of ZnO nanosuspensions in basic solutions and the investigation of their photoactive properties through the photodecomposition of Chicago Sky Blue dye under UV irradiation.
2：Sample Selection and Data Sources:
Aqueous solutions of Chicago Sky Blue dye, zinc nitrate, and ammonium hydroxide were prepared. The absorption spectra were measured using a spectrophotometer.
3：List of Experimental Equipment and Materials:
High-pressure mercury lamp (DRT-240 (Russia)), light filters UVS-1 and FF-1, spectrophotometer Perkin-Elmer Lambda
4：Experimental Procedures and Operational Workflow:
6 The solutions were irradiated with a mercury lamp, and the spectral dependencies of photochemical processes were studied using light filters. The kinetics of dye photodecomposition were analyzed.
5：Data Analysis Methods:
The kinetics of dye photodecomposition were described by an exponential function as a photochemical reaction of the pseudo-first order.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
