A review on transition metal oxides based nanocomposites, their synthesis techniques, different morphologies and potential applications

Abstract

In the field of nanotechnology and nanoscience, transition metal oxides based nanocomposites (TMONCs) are promising for various application uses such as Supercapacitors, Sensors, Bactericidal properties, Photocatalytic Degradation, Solar Cells etc. Modification of transition metal oxide nanoparticles (TMONPs) to TMONCs by doping/mixing of another transition metal and metal oxide, carbon based nanoparticles, conducting polymers etc. to achieve enhanced surface area, increasing surface activities or number of active surface sites, reducing electron-hole recombination, increasing charge transfer processes etc. have been reported in literature. These improved properties are the possible reason for the enhancement in its practical applications efficiencies. This review summarizes recent development on transition metal oxides based nanocomposites for different potential applications. Also synthesis methods of transition metal oxide based nanocomposites have obtained an increasing attractions to achieve cost effectiveness and environment friendly routes of synthesis with high rate of production, high yield of product and also less toxic waste production. Transition metal oxides nanocomposites have been fabricated by various methods such as Microwave assisted synthesis technique, Sol-Gel method, Biosynthesis method, Co-precipitation process, Simple Chemical method etc. Different morphologies of transition metal oxides based nanocomposites have been summarized in this review article. Herein, this paper discuss about several reported synthesis techniques, various characterization techniques used for structural and surface properties identifications, different morphologies and various potential applications of transition metal oxide based nanocomposites.

Flexible g‐C3N4 Enhancing Superior Cycling Stability of ZnFe2O4‐Fe2O3 Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

“…Comparing Figure 5(b) and 5(e), it can be seen that ZFO‐Fe 2 O 3 displayed the first circle discharge/charge specific capacity of 1251.1/795.4 mAh g −1 and initial coulombic efficiency (ICE) of 63.5 %, while ZFO‐Fe 2 O 3 /g‐C 3 N 4 was 2280.3/1550.3 mAh g −1 with initial coulombic efficiency of 67.9 %. The discharge/charge capacity of the g‐C 3 N 4 ‐doped materials were significantly better for first cycle, but the initial coulombic efficiency was still awful, which matched the properties of transition metal oxides [27] . The low ICE can be improved by a number of processes such as pre‐lithiation techniques, material doping/coating and surface modification [67] .…”

“…Unfortunately, iron‐based metal oxides have large theoretical specific capacities, but large volume expansion (>200 %) and poor electrical conductivity during cycling limit the development of this type of materials [26] . It has been found that reducing the size of materials to the nanometer level, modifying the morphology of the materials or compositing with other materials such as carbon or polymeric conductive polymers, which can effectively reduce the disadvantages of volume expansion and easy pulverization, and increase the electrical conductivity [27,28] . Yue et al [29] .…”

Advances in Sno₂-Based Nanomaterials for Photocatalysis, Supercapacitors, and Antibacterial Activities

“…The components, structure, and interfacial interactions of each specific property have a significant impact on them. In addition to improved economic potential for a number of industrial sectors that are highly beneficial to humanity and the environment [19,20]. Metal doped SnO2, conducting polymers/SnO2, transition metal oxides (TMOs)/SnO2, graphene/SnO2, and other important SnO2 based nanocomposites have been used in solar cells, SCs, Li-ion batteries, water purification, catalysis, sensors, medicine, electronics devices, and other sectors.…”

Sense and Shoot: Unveiling the Electro-/Photocatalytic Potential of 2D White Graphene-Supported Perovskite Strontium Cobaltite from Detection to Remediation of Oxidative Stress Herbicide (Mesotrione)

“…Hence, there is significant interest in developing rapid and cost-effective alternatives. Compact or portable devices, such as electrochemical bio/chemical sensors, present potential solutions as alternative approaches to traditional analytical methods. − …”