Recent Advances in Preparation and Applications of 3D Transition Metal Oxides Semiconductor Photonic Crystal

Abstract

Nanostructured transition metal oxides (TMOs) semiconductor materials, whose photoelectric properties are significantly improved due to their nanostructures, have attracted more and more attention in recent years. As a functional material with periodic nanostructures and unique optical properties, photonic crystals (PhCs) have become an important option for nanostructuring semiconductor materials. The TMO semiconductor PhC (TMOPC), which is integrated by combining TMO with PhC, not only has the sensitivity of the TMO semiconductor to environmental stimulus, but also can improve the utilization rate of light and make the material have the optical response due to the optical modulation of PhC, such as slow light effect. The application of TMOPCs is widely promoted and expanded due to the improvement of its performance. Herein, this review summarizes the preparation methods of 3D TMOPCs in recent years and their main applications. The limitation and potential development of 3D TMOPCs in preparation and application are also discussed and prospected.

Three-Dimensional Electrochemical Sensors for Food Safety Applications

“…(2) In particular for biosensing, the produced materials or nanocomplexes have higher purity and good affinity, and the favorable rheological features make them simple to load and adsorb enzymes; (3) By altering external factors during synthesis, such as temperature and pH, the shape and size of the final product can be accurately controlled [65,66]. Typical examples are that 3D flower-like neodymium molybdate and 3D bienzyme/Au NPs/multiwalled carbon networks were synthesized by sol-gel method and demonstrated satisfactory results in electrochemical detection of nitrofurantoin and acetylcholine [67,68].…”