Synthesis of Nano-ZnO/Diatomite Composite and Research on Photoelectric Application

Abstract

The key to the commercialization of sustainable energy conversion technologies is the development of high-performance catalysts. The discovery of a stable, efficient, and low-cost multi-function catalyst is key. We used a simple green precipitation method to load diatomite nanozinc oxide particles onto a diatomite substrate. The ZnO is nano-sized. This precipitation method produces ZnO nanoparticles in situ on diatomite. The catalyst degraded 90% of a Methylene blue solution and also degraded gaseous benzene and acetone. Not only can the catalyst be used for the organic degradation of wastewater, but it also has the potential to degrade volatile organic compounds. Photocatalytic efficiency is closely related to the generation and separation of photosynthetic electrons and holes. The effective suppression of the composite rate of photoliving carriers, and thus improvement of the photocatalytic activity, has become a key research area. At present, At present, photocatalysis is an effective technology to inhibit photocarrier synthesis, which is often studied in sewage treatment. Photocatalytic water treatment reduces the combination of photoelectrons and holes by applying an external bias, thus improving the quantum efficiency for the complete mineralization of organic pollutants. The composite catalyst was used for oxygen and hydrogen extraction reactions, and a comparison of the catalysts with various loading ratios showed that the electrolysis water activity of the in situ loaded catalyst is due to pure ZnO, and the efficiency is highest when the loading ratio is 10%. This work provides new methods for the design and further optimization of the preparation of electrolytic aqueous catalysts.

Active Packaging Material Based on Immobilized Diatomaceous Earth/Zinc Oxide/High-Density Polyethylene Composite for Sea Food and Products

“…Raw DE ( Figure 1 A) has skeleton structures and pores ranging from 5 to 15 μm, similar to those of diatom algae; the diameters of the pores varied between 200 and 460 nm. Owing to the nanometric proportion and morphological structure inherent in DE, this material is a potential choice for antibacterial applications as a host for ZnO particles [ 33 , 34 ]. The TEM micrographs, as well as the EDS of the synthesized DE/ZnO composite, are shown in Figure 1 B,C.…”

Synthesis and Photoelectrocatalytic Applications of TiO2/ZnO/Diatomite Composites

“…In our previous work, we found that the ZnO(10%)/diatomite composite catalyst had the best photocatalytic performance [32]. Therefore, it was selected as the carrier in this study.…”