There are many journals publishing on nanocatalyst like ACS Nano, Nano today, Catalysis science and technology, Nanoscale, Journal of material chemistry, Green chemistry, Environmental science:Nano, Materials horizon's, ACS catalysis, Nano letters, Applied Catalysis : B, Journal of catalysis. These are few top rated journals in the field of catalysis. Although the nature is glamorous publishing house, but above-mentioned journals are leading in the field. You can also search on the official site of Thomson and Reuters for the top rated journals in any field.