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Efficient Decomposition of Formaldehyde on Ni−Al Hydrotalcite/AlOOH Nanocomposites Decorated with Pt Nanoparticles at Ambient Temperature
Author(s) -
Qin Lifan,
Cheng Hefa
Publication year - 2021
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202100206
Subject(s) - boehmite , hydrotalcite , catalysis , nanocomposite , materials science , formaldehyde , nanoparticle , chemical engineering , nickel , adsorption , inorganic chemistry , aluminium , nuclear chemistry , chemistry , metallurgy , organic chemistry , nanotechnology , engineering
Nanocomposites of nickel‐aluminum hydrotalcite (Ni−Al HT) and boehmite (AlOOH) decorated with Pt nanoparticles (NPs) were synthesized and evaluated for catalytic oxidation of formaldehyde at ambient temperature. Experimental results showed that Ni−Al HT modification improved the activity of Pt/AlOOH, and the nanocomposite with Ni/Al molar ratio of 1 : 9 (Pt/Ni 1 Al 9 ) exhibited remarkable and stable catalytic activity. Characterization results indicated that Pt/Ni 1 Al 9 had a larger specific surface area, higher degree of Pt NPs dispersion, and more surface active sites compared to the nanocomposites with other Ni/Al ratios. The enhanced catalytic activity of Pt/Ni 1 Al 9 was attributed to the generation of more surface active oxygen species from the adsorbed oxygen molecules, which was activated by the electron transfer between Ni−Al HT and Pt/AlOOH, and the suitable interaction and synergistic effect among Ni−Al HT, Pt NPs, and AlOOH. These findings indicate that the nanocomposites of Ni−Al hydrotalcite and boehmite hold significant promises for removal of indoor formaldehyde.