Lower temperatures Hydroxyl groups 4 Oxide minerals 4 Titanium dioxide 4 Accretion disks 2 Activation energy 2 Air purification 2 Austenitic stainless steel 2 Biodegradability 2 Biomaterial application 2 CO2-TPD 2 Carbon dioxide 2 Carboxylate groups 2 Carboxylation 2 Catalyst activity 2 Catalysts 2 Cathodic arc 2 Cathodic arc discharges 2 CeO2-Fe2O3 solid solution 2 Chemical industry 2 Chemical shift 2 Classical novae 2 Coatings 2 Composite films 2 Composting 2 Copper nickel catalysts 2 Copper nickels 2 Covalent anchoring 2 Crystalline structure 2 Crystallite size 2