Table 1.

Highly dispersed catalysts prepared by a plasma technique.

Types of Catalyst	Types of Plasma	Characteristics	Remarks	Applications	References
Pt and Co catalyst	DBD plasma H2/N2/CH4	Higher selectivity		Methane conversion	[16]
Pt/TiO2 catalyst	DBD cold plasma Ar & H2	Smaller Pt particles homogeneously distributed	Size of particles: 1.7 nm	Mesoporous photocatalyst with enhanced activity	[17]
Pd/Graphene sheets	DBD plasma-assisted H2	Well-dispersed and higher catalytic efficiency	Size of particles: 2 nm	The hydrodesulfu-rization of carbonyl sulfide	[25]
Au/TiO2	DBD plasma O2	Higher activity small particle size and narrow size distribution	Size of particles: 2.6 nm	CO oxidation	[26]
Au/P25-PC	AP DBD cold plasma Ar & H2	Smaller size and higher CO oxidation activity	Size of particles: 4.6 nm	CO oxidation	[27]
Ni/MgO	DBD plasma H2	Smaller particle size and higher specific surface area	Size of particles: 3.4 nm	CO2 reforming of methane	[28]
Ni/Ce/SBA-15-P	DBD plasma Ar & H2	High specific surface area and good high-temperature stability	Size of particles: 7.1 nm	Methanation of carbon oxides	[29]
Ni/SiO2	Ammonia impregnation combined with DBD NH3	High dispersion and high temperature stability	Size of particles: 11.2 nm	CO methanation	[30]
Ni/ZrO2	DBD plasma H2	Highly dispersed and long-time stability	Size of particles: 10.6 nm	CO methanation	[31]
Ni/MgO	DBD plasma air	Low temperature activity and good stability	Size of particles: 5.4 nm	CO2 reforming of methane	[32]
Ni/MgAl2O4	DBD plasma air	High dispersion and unique structure	Size of particles: 8.9 nm	CO2 methanation	[33]
Ni/PVMT	DBD plasma H2	Ultralow Ni loading and excellent catalytic performance		CO methanation	[34]
Ni/SiO2	DBD plasma air	Low activity with small size and coke resistance	Size of particles: 7.1 nm	Steam reforming of methane	[35]
MnO	Wire-plate DBD O2	Low cost, environmentally friendly and high activity		Toluene decomposition	[36]
Co/CNTs	DBD plasma Ar	Uniform and dispersed Co particles		FTs	[37]
W2N	DBD plasma NH3	Excellent chemical stability and high performance	Size of particles: 5.99 nm	Acetylene hydrochlorina-tion	[38]
TiO2-β zeolite	DBD plasma O2	Higher methanol photodegradation rates	The BET specific surface area: 421.9 m2/g	Methanol photooxidatin	[39]