Premium
Photochemical reduction of nitrate to ammonia using layered hydrous titanate/cadmium sulphide nanocomposites
Author(s) -
Sato Tsugio,
Sato Kenichi,
Fujishiro Yoshinobu,
Yoshioka Toshiaki,
Okuwaki Akitsugu
Publication year - 1996
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199612)67:4<345::aid-jctb586>3.0.co;2-#
Subject(s) - ammonia , cadmium nitrate , nitrate , nanocomposite , cadmium , titanate , reduction (mathematics) , inorganic chemistry , chemistry , environmental chemistry , photochemistry , materials science , chemical engineering , nanotechnology , ceramic , organic chemistry , geometry , mathematics , engineering
The photocatalytic activity of H 2 Ti 4 O 9 /CdS nanocomposites incorporating CdS particles, less than 0·8 nm thick, in the interlayer of H 2 Ti 4 O 9 was evaluated for the reduction of NO 3 − with and without methanol. NO 3 − was photochemically reduced by bandgap illumination in the presence of H 2 Ti 4 O 9 /CdS nanocomposites with and without methanol although unsupported CdS showed no noticeable photocatalytic activity for NO 3 − reduction. The oxidation of CdS in H 2 Ti 4 O 9 /CdS to SO 4 2‐ was accompanied by NO 3 − reduction without methanol, whereas addition of methanol was useful to promote the NO 3 − reduction and depress the oxidation of CdS. The catalytic activity of H 2 Ti 4 O 9 /CdS greatly increased with doping Pt particles in the interlayer.