LaFeO3 perovskite with a porous fibrous structure was successfully synthesized using a sunflower seed shell as a template. To investigate the effects of this template, a sample was prepared without a template via the same procedure. Through various characterization techniques, such as X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, N2 adsorption-desorption analysis, X-ray photoelectron spectroscopy, oxygen temperature programed desorption, and hydrogen temperature programed reduction, the physiochemical properties of the samples were investigated. The results showed that the sample made with a template had a larger surface area and a larger amount of adsorbed oxygen, which further illustrated that the sunflower seed shell template had a significant impact on the physiochemical properties of the samples. Furthermore, we explored the catalytic activity for nitric oxide (NO) oxidation, and studied the factors affecting it, which highlighted its potential application in automobile exhausts.

Recently, ion gated oxide transistors are becoming increasingly interesting because of their low operation voltage and unique electric-field-induced surface phenomena. In this work, multi-gate indium tin oxide (ITO) neuron transistors are fabricated. Poly (vinyl alcohol)/graphene oxide hybrid electrolyte films are used as gate dielectrics. The hybrid electrolyte film demonstrates a high specific capacitance of similar to 2 mu F cm(-2) at 1.0 Hz. Good electrical performances are demonstrated, including a high ON/OFF ratio of similar to 4 x 10(6) and a high electron mobility of similar to 6.7 cm(2) V-1 s(-1). Most importantly, 'NOT', 'AND' and 'NAND' logic circuits were demonstrated by using one transistor/one resistor structures. Unified logical definitions of low potential of 2 V and -2 V are used for logic state of '1' and '0', respectively. The proposed multi-gate ITO-based neuron transistors have potential applications in portable electronics.