Investigation on catalytic activity of CuO/La2O3, CuO/Gd2O3 and CuO/La2O3/Gd2O3 nanocatalysts prepared via novel two step approach

Fabrication of fullerene-supported La2O3–C60 nanocomposites: dual-functional materials for photocatalysis and supercapacitor electrodes

“…This slurry was dried at 60 1C for 24 h in an electric vacuum oven to remove/extract impurities. CV and GCD measurements were conducted in the potential window from 0.1 to 0.55 V at different scanning rates (5,10,15,20,25,30,35,40,45,50,55,60,65, and 70 mV s À1 ) and a current density of 0.05 A g À1 . EIS tests were carried out within the frequency range of 1 Â 10 5 Hz to 0.1 Hz at an applied voltage of 0.5 V and an amplitude of 0.01V RMS .…”

“…22,23 In addition, La 2 O 3 works as an active material for electrochemical supercapacitors and possesses multiple oxidation states such as La 2+ and La 3+ during the charge and discharge process, which is helpful for the redox reaction to boost the pseudo-capacitance performance. 24,25…”

“…22,23 In addition, La 2 O 3 works as an active material for electrochemical supercapacitors and possesses multiple oxidation states such as La 2+ and La 3+ during the charge and discharge process, which is helpful for the redox reaction to boost the pseudo-capacitance performance. 24,25 The ideal electrode materials must be fulfilling the following conditions to gain high power and energy density, which are (i) the presence of free ions with several oxidation states and (ii) redox (oxidation-reduction) reactions occurring by multiple electrons. 26 Moreover, a good photocatalyst must have the following features: (i) absorption of maximum photons, (ii) efficient charge separation, and (iii) lower recombination of photogenerated charge carriers.…”

CuO−La2O3 Nanocomposite as a Recyclable and Eco‐Friendly, Heterogeneous Catalyst for the One‐Pot Synthesis of Pyrano [2, 3‐c] Pyrazoles

“…During recent years, numerous catalytic applications of lanthanide‐based metal oxides (Nd 2 O 3 , Y 2 O 3 , La 2 O 3 , Sm 2 O 3 , Gd 2 O 3 , Eu 2 O 3 , Yb 2 O 3 , etc.) accreted with CuO nanoparticles have more attention because of their flexible activities and electronic properties [43] . However, the catalytic characteristics of CuO/La 2 O 3 nanocomposites in organic reactions have been remained undiscovered [44] .…”

“…) accreted with CuO nanoparticles have more attention because of their flexible activities and electronic properties. [43] However, the catalytic characteristics of CuO/La 2 O 3 nanocomposites in organic reactions have been remained undiscovered. [44] The complex and different interactions between copper oxide and lanthanum can led to synergistic effects and increase the catalytic properties.…”