TiN nanorods were synthesized using electrospinning technique followed by thermolysis in different atmospheres. A dimethyl formamide–ethanol solution of poly-(vinyl pyrrolidone) and Ti (IV)-isopropoxide was used as the electrospinning precursor solution and as-spun nanofibers were calcined at 500 °C in air to generate TiO 2 nanofibers . Subsequently, a conversion from TiO 2 nanofibers to TiN nanorods was employed by the nitridation treatment at 600∼1400 °C in ammonia atmosphere. A typical characteristic of the final products was that the pristine nanofibers were cut into nanorods. The conversion from TiO 2 to TiN was realized when the nitridation temperature was above 800 °C. As-prepared nanorods were composed of TiN nano-crystallites and the average crystallite size gradually increased with the increase of the nitridation temperature. Electrochemical properties of TiN nanorods showed strong dependence on the nitridation temperature. The maximum value of the specific capacitance was obtained from the TiN nanorods prepared at 800 °C.
Xuan Yu,Xu Liu,Jinyan Zhao,Mingzhe Xue,Huaijie Shi,Chenghang Jiang,Jia Liu,Yufeng Xue,Fengying Gao,Xing Zhong,Zihao Yao,Jianguo Wang
Electrochemical ozone production (EOP) is a technology with great promise for ozone synthesis, where electrochemical anode and cathode reactions play key roles in electrolytic ozone generators. In this work, mesoporous three-dimensional Pt/TiN nanorods (NRs) have been designed and prepared for EOP and HER, exhibited impressive performance with the faraday efficiency of the anodic EOP was 13 %. The overpotential of cathodic HER was 38 mV at 10 mA·cm −2 with 0.5 M H 2 SO 4 . The porous structure of Pt/TiN NRs provides microenvironments favorable for enrichment of reaction intermediates, accelerating the kinetic processes of EOP and HER. Theoretical calculations have revealed that metal-support interactions (MSI) between Pt and TiN play an influential role in the adsorption of reactive intermediates. Furthermore, promising efficiencies in the electrochemical degradation of organic pollutants have been investigated, highlighting the potential application of the Pt/TiN NRs-1 || Pt/TiN NRs-2 in advanced electrochemical oxidation.
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