Naik, Brundabana Kim, Sun Mi Jung, Chan Ho Moon, Song Yi Kim, Sang Hoon Park, Jeong Young 2024-01-20T10:31:07Z 2024-01-20T10:31:07Z 2021-09-05 2014-02-13 2196-7350 https://pubs.kist.re.kr/handle/201004/127090 Hierarchical N-doped TiO2 nanostructured catalysts with micro-, meso-, and macroporosity are synthesized by a facile self-formation route using ammonia and titanium isopropoxide precursor. UV-vis diffuse reflectance spectra confirm the red shift and band gap narrowing due to the doping of N species in the TiO2 nanoporous catalyst. Hierarchical macroporosity with fibrous channel patterning is observed and well preserved even after calcination at 800 degrees C, indicating thermal stability, whereas micro-and mesoporosity are lost after calcination at 500 degrees C. The photocatalytic activity of hiearchical N doped TiO2 catalysts loaded with Au is evaluated for H-2 production reaction in visible light. The enhanced photocatalytic activity is attributed to the combined synergetic effect of N doping for visible light absorption, micro-and mesoporosity for an increase of effective surface area and light harvestation, and hierarchical macroporous fibrous structure for multiple reflection and effective charge transfer. English WILEY PHOTOCATALYTIC ACTIVITY HYDROGEN-PRODUCTION TITANIUM-DIOXIDE FACILE SYNTHESIS ORIGIN WATER GEL Enhanced H-2 Generation of Au-Loaded, Nitrogen-Doped TiO2 Hierarchical Nanostructures under Visible Light Article 10.1002/admi.201300018 1 ADVANCED MATERIALS INTERFACES, v.1, no.1 ADVANCED MATERIALS INTERFACES 1 1 scopus 000348281700006 2-s2.0-84902096631 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article PHOTOCATALYTIC ACTIVITY HYDROGEN-PRODUCTION TITANIUM-DIOXIDE FACILE SYNTHESIS ORIGIN WATER GEL hierarchical nanostructured catalyst hydrogen production N doping photocatalytic activity visible light