Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Abstract

At present, nanostructures with excellent morphology have become a research hotspot. With the deepening of research and the rapid development of nanotechnology, nanosemiconductors have also made remarkable progress. In recent years, ZnWO4 in metal tungstates has been widely used in many fields, which is mainly due to its high crystal density, short radiation length, excellent optical properties, good radiation damage resistance, and non‐liquefaction. Therefore, herein, the synthesis methods and applications of ZnWO4 semiconductor materials in recent years are reviewed. First, the crystal structure and characteristics of ZnWO4 are described, and then the latest research progress of ZnWO4 semiconductor materials is summarized. The synthesis methods and contributions to photocatalysis, sensors, electronic materials, and luminescent materials are highlighted. The characteristics of ZnWO4 nanoarrays and their applications in supercapacitors are particularly emphasized, which provide a reference for the development of multifunctional nanoarrays. Finally, the challenges and countermeasures of ZnWO4 semiconductor materials are summarized and prospected. In a word, a new idea and strategy to design and assemble new types of ZnWO4 nanomaterials with multiconstructional systems and multifunctional properties for their practical applications is provided.

N-Doped ZnWO4 Nanorods Decorated on N-Doped Reduced Graphene Oxide Sheets for Electrochemical Detection of Diphenylamine

“…Transition-metal tungstates (MWO 4 , where M = Ni, Co, Zn etc.) have drawn considerable attention owing to their extraordinary physicochemical properties such as excellent ionic conductivity, high electric conductivity, and electrocatalytic activity and have been extensively applied in various areas including energy storage devices, catalytic photoanodes, light-emitting diodes, and sensors. − Among them, ZnWO 4 is an important tungstate and has been utilized in various electrochemical (EC) applications because of its redox behavior, chemical stability, moderate band gaps, nontoxicity, and low-cost nature. , Several synthetic approaches have been implemented to improve the catalytic performance of ZnWO 4 , including metal ion doping and deposition . Compared to other strategies, doping can improve the catalytic properties of the materials because it affects the band gap structure without disturbing the main crystal structure and also provides additional surface area for the EC sensing .…”

Construction of Z-Scheme Ag2MoO4/ZnWO4 Heterojunctions for Photocatalytically Removing Pollutants

“…During recent years, the semiconductor ZWO has been highlighted due to its many intersecting properties, such as dielectric, optical, thermal, scintillation, and luminescence properties. , The VB-edge position of ZWO is relatively low, signifying that the holes photoproduced in the VB tend to react with OH – or H 2 O to generate hydroxyl (·OH), which is a strong oxidant. This property suggests that ZWO is suitably used as a photocatalyst for the photocatalytic decomposition of organic pollutants. , Nevertheless, the easy recombination of photocarriers limits the photoactivity of bare ZWO and its practical application in contaminant elimination.…”

Advances in photocatalytic degradation of organic pollutants in wastewaters: harnessing the power of phthalocyanines and phthalocyanine-containing materials

“…9,10 In the past decade, nanomaterials such as SiO 2 , ZnWO 4 , ZnO, brous materials, ferritic nanomaterials, and carbonbased and TiO 2 nanomaterials have been reported in UVvisible light photocatalysis. 7,11 Among them, the most studied and used are the TiO 2 nanomaterials, discovered over three decades ago. They showed great photocatalytic activity, hydrophobicity, long-term stability, lower toxicity and costs (compared with other nanomaterials), and self-cleaning ability.…”