Design and synthesis of novel polyoxometalate-based binary and ternary nanohybrids for energy conversion and storage

Abstract

Polyoxometalate (POM)-based binary and ternary hybrids, including combinations of POMs, semiconductors, nanostructured carbon (carbon nanotubes, graphene, carbon dots, etc.), and metal nanoparticles (MNPs), are key materials in photoelectrocatalysis. POM plays a key role in the construction of nanohybrids and contributes to their photoelectrochemical catalytic properties. These composites combine the properties of two or three functional nanoscale materials, resulting in a wide range of applications, including catalysis, energy conversion and storage, molecular sensors, and electronics. Herein, we summarize the latest progress in POM-based binary nanohybrids (POM/metal, POM/semiconductor, and POM/nanocarbon) and ternary nanohybrids (metal/POM/nanocarbon), particularly in energy materials for photocatalysis, fuel cells, biosensors, and photoelectrochemical devices. Current applications are critically assessed, and promising target systems are discussed.

Polyoxometalate-based frameworks as chemical nanoreactors: in situ synthesis of active silver nanoparticles in confined spaces

“…Polyoxometalates (POMs) that possess redox activity, acidity, and composition diversity currently have been undergoing a remarkable development because of their broad application prospects in fluorescence, 10 catalysis, 11–16 medicine, 17–20 stimulus-response, 21 magnetism, 22 and energy storage. 23–27 They can be regarded as bulk inorganic ligands, reducing agents, and capping agents for the preparation of MNPs. With POMs, improved stability, synergistic effects, and the avoidance of additional reducing agents can be achieved.…”

Two biomass material-derived self-doped (N/O) porous carbons from waste coriander and lilac with high specific surface areas and high capacitance for supercapacitors

“…6 The performance of supercapacitors is closely related to the choice of electrode materials, which generally include three categories: metal compounds, conductive polymers and carbon materials, among which carbon materials include activated carbon (ACs), carbon fiber (CFs), carbon aerogels, graphene, carbon nanotubes (CNTs), etc. 7 Carbon materials can be derived from biomass, and are highly valuable and potential electrode materials for supercapacitors, that not only have a rich pore structure and high specific surface area, but also have low preparation costs, diverse sources, convenient preparation procedures, and most importantly, play an important role in protecting the environment. 8 So, the use of biomass energy is in line with the concept of global sustainable scientific development.…”

Chiral polyoxometalate–cyclodextrin frameworks via Mn-mediated assembly: Enhanced stability and catalytic activity

“…Polyoxometalate (POM), because of their fascinating structural and chemical versatility, are a recognizable choice in many fields of science, ranging from functional materials and catalysis to magnetism and biomedicine [1][2][3][4][5][6][7]. Metal-organic frameworks (MOFs), which are a class of crystalline porous materials constructed from metal ions and organic bridging ligands, lead to highly uniform porous structures with large surface areas [8][9][10][11][12][13]. MOFs featuring large specific surface areas and permanent pores have become outstanding candidates for loading POMs.…”