Noble Metal Nanoparticles Decorated Boron Nitride Nanotubes for Efficient and Selective Low-Temperature Catalytic Reduction of Nitric Oxide with Carbon Monoxide

• DOI: 10.1021/acsami.2c20985
• Publication Date: 2023-02-13T22:14:37Z
• Authors: Ki-In Choi; Dolly Yadav; Junghwan Jung; Eunkwang Park; Kyung-Min Lee; Taejin Kim; Jaewoo Kim
• Keywords: Noble metal; Selective catalytic reduction

Parallel to CO2 emission, NOx emission has become one of the menacing problems that seek a simple, durable, and high-efficiency deNOx catalyst. Herein, we demonstrated simple syntheses platinum group metal nanoparticle-decorated f-BNNT (PGM = Pd, Pt, Rh, stands for -OH-functionalized boron nitride nanotubes) as catalyst efficient selective reduction NO by CO at low-temperature conditions. PGM/f-BNNT with low amount noble nanoparticles (0.7-0.8 wt %) presents very catalytic activity well oxidation during their removal process. The efficiencies Pd/f-BNNT, Pt/f-BNNT, Rh/f-BNNT catalysts were investigated under various temperatures, flow rates, reaction times, respectively. For most cases, was >99% temperature ∼200 °C. robustness efficiency also verified presenting almost 100% conversion using catalyst, which aged humid air 600 700 °C 24 h, synergic effect efficacy well-dispersed excellent surface properties BNNT are reasons high selectivity property temperature. On basis this investigation, possible save expensive PGM catalysts, such Rd, much 100 times while similar or better performance simultaneous removals.