Perovskites-Based Nanomaterials for Chemical Sensors

Abstract

The perovskite structure is adopted by many compounds in solid-state chemistry. The sensitivity, selectivity, and stability of many perovskite nanomaterials have been devoted the most attention for chemical sensors. They are capable to sense the level of small molecules such as O 2 , NO, and CO. This chapter provides a comprehensive overview of perovskite nanoscale materials that concentrate on chemical sensors. The perovskite structure, with two differently sized cations, is amenable to a variety of dopant additions. This flexibility allows for the control of transport and catalytic properties, which are important for improving sensor performance. We devote the most attention on the synthesis, structural information, and sensing mechanism. We will later elaborate on the development mechanism of chemical sensors based on perovskite nanomaterials. We conclude this chapter with the personal perspectives on the directions toward future works on a novelty of nanostructured chemical sensors.

Perovskite@Graphene Nanohybrids for Breath Analysis: A Proof-of-Concept

“…Regarding the perovskite metal oxides, the ambient moisture tends to form hydroxyl ions at the nanomaterial surface [124]. In the case of halide perovskites, water molecules induce the distortion of the perovskite lattice, resulting in a probable degradation [125].…”

Synthesis and Properties of (Bi, Cd)-doped CuMn2O4 thin films by sol-gel dip-coating method

“…In this type of material has aroused great interest for their diverse properties such as electrochemical, photocatalytic, magnetic properties, sensor and lithiumion batteries. The spinel type of ternary manganese oxides like NiMn2O4, CoMn2O4, CuMn2O4 and ZnMn2O4 have been recently investigated and reported [6][7][8][9][10][11]. CuMn2O4 nanostructures have semiconductor properties and can be used in the electronics industry, There are several methods of preparing nanostructures such as the combustion method [12], Soft reactive grinding [13], Chemical vapor deposition [14], Solid-state reaction [15], hydrogen storage [16], hydrothermal method [17], Sol-gel [18], atomic layer deposition [19].…”

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

“…Calcium titanate, strontium titanate, and strontium calcium titanate are perovskite-structured ceramics often exploited in fabrication of electronic devices. In general, perovskite-structured titanate, such as CaTiO 3 , SrTiO 3, BaTiO 3 , and FeTiO 3 , have relatively wide bandgap energies ranging between 2.8 and 3.6 eV [1][2][3][4][5][6]. Bandgap energies can be modified to suit the intended application through doping [7].…”