A two-step hydrothermal method was developed to produce CdS nanoparticle−sensitized ZnO nanoneedle heterostructures, which array on copper fiber (CF), and its applications in the field of photocatalysts were also explored. In this novel heterostructure, the CF plays a role in supporting the carriers of CdS nanoparticles− sensitized ZnO nanoneedles. Furthermore, CF is capable of accelerating the exportation of charge carriers. Therefore, CF@ZnO/CdS hierarchical heterostructures present excellent photocatalytic performance under visible light, enabling the decomposition of organic dyes such as RhB within 60 min, with desirable cycling ability. Because of the sustainability and engineering potential of CF in chemistry, it is easy for it to be recycled. This method we developed also conformed to the development of green chemistry without using organic solvents in the entire fabrication process of CF@ZnO/CdS hierarchical heterostructures. This work may pave the way for a useful system to realize efficient charge separation and transmission, which could exert significant influence on the large-scale synthesis of photocatalytic materials with low cost and enhanced performance.
The energy performances of nanothermite materials are dependent on the mass transport, diffusion distance, and interfacial contact area between the fuel and the oxidizer. In this work, we utilize an atomic layer deposition (ALD) technique to deposit Besides, the thermite reaction of Al@Fe 2 O 3 is several times faster than that of a mixture of Al-Fe 2 O 3 nanopowders. The improved energy performance is mostly attributed to the uniform distribution of Al and Fe 2 O 3 on the nanometer scale, which effectively reduces the diffusion distance and maximizes the interfacial contact area between the oxidizer and the fuel.
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