신준철 Geonhee Lee Myungwoo Choi Huiwon Jang Yunsung Lim 김광수 Sang-Hyeon Nam 백승협 송현철 Jihan Kim 강종윤 Jeong-O. Lee Seokwoo Jeon Donghwi Cho 장지수 2024-01-12T06:34:27Z 2024-01-12T06:34:27Z 2023-07-21 2023-09 2050-7488 https://pubs.kist.re.kr/handle/201004/79845 Environmental pollutants threaten millions of lives and state-of-the-art strategies, mostly based on surface catalytic activities to remediate environmental issues, have emerged. Despite their active capabilities, traditional schemes are only capable of a single function, either sensing hazardous chemicals or their reduction, limiting the identification of clear solutions to environmental problems. This study proposes a material engineering method that adopts both the detection and neutralization of environmental pollutants for remediation. This strategy exploits ultrafast flash lamp-driven thermal engineering to realize ultra-small (<5 nm) polyelemental nanoparticles with a uniform size distribution on a three-dimensional (3D) metal oxide nanostructure. Specifically, an intense pulse light treatment on highly periodic 3D thin-shell TiO2 triggers an intensive photothermal effect, enabling instant reduction of various surface-decorated metal ion precursors into an atomically mixed heterostructure. Experimental and computational studies were conducted to investigate the physicochemical reactions occurring on the heterometal catalysts. As a proof-of-concept, the universal photocatalytic utility of dual-mode photoactivated quaternary phase (PtPdNiCo) NPs incorporated into 3D TiO2 was demonstrated for gaseous chemical sensing and degradation of environmental pollutants in water. English Royal Society of Chemistry Atomically mixed catalysts on a 3D thin-shell TiO2 for dual-modal chemical detection and neutralization Article 10.1039/d3ta02160b 1 Journal of Materials Chemistry A, v.11, no.34, pp.18195 - 18206 Journal of Materials Chemistry A 11 34 18195 18206 N scie scopus 001029752000001 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article; Early Access PHOTOCATALYTIC DEGRADATION METHYLENE-BLUE SURFACE-ENERGY NANOPARTICLES POLLUTANTS WATER IRRADIATION MORPHOLOGY PHASE ZNO