Synthesis of TiO2/RGO with plasmonic Ag nanoparticles for highly efficient photoelectrocatalytic reduction of CO2 to methanol toward the removal of an organic pollutant from the atmosphere

Self-Assembled Co3O4 Nanospheres on N-Doped Reduced Graphene Oxide (Co3O4/N-RGO) Bifunctional Electrocatalysts for Cathodic Reduction of CO2 and Anodic Oxidation of Organic Pollutants

“…Many research groups have focused on capturing and utilizing CO 2 to mitigate global warming and climate changes, which can enable the sustainable production of various liquid chemicals and fuels. 3,4 Several catalytic conversion technologies have attempted to convert CO 2 into value-added chemicals such as CH 3 OH, CH 3 CH 2 OH, CO, formic acid, CH 4 , and so forth. 4,5 Electrochemical CO 2 reduction (ECR CO 2 ) offers an attractive technology for converting flue gases into selective production of liquid fuels under mild operating conditions.…”

“…6,7 Demanding the production-specific fuel-grade compound, ECR CO 2 can be adjusted by the electrocatalytic conditions of electrolytes, applied potential, and different electrode materials. 3,8,9 To achieve efficient ECR CO 2 , various high-performance electrocatalysts have been reported in the literature. 10,11 Early studies have reported that CO has formed on Zn, Ag, and Au electrodes with a potential range of −0.45−−0.9 V RHE , while Bi, Sn, Pb, S doped Cu, Cu 3 Sn, Cu/Au, and Cd electrodes are potentially involved in converting CO 2 to formic acid at of 0.05−−0.25 V RHE .…”

“…3e) indicates the presence of carbon, nitrogen, oxygen, and cobalt elements. The highresolution C 1s spectrum (Figure 3f) shows four deconvoluted peaks of CC (284.73 eV), N-sp 2 -C (286.34 eV), N-sp 3 -C (287.13 eV), and N−CO (278.8 eV) bonds. 30 This result confirms the incorporation of N-atoms in the graphitic carbon during the synthesis process.…”

“…Many research groups have focused on capturing and utilizing CO 2 to mitigate global warming and climate changes, which can enable the sustainable production of various liquid chemicals and fuels. , Several catalytic conversion technologies have attempted to convert CO 2 into value-added chemicals such as CH 3 OH, CH 3 CH 2 OH, CO, formic acid, CH 4 , and so forth . , Electrochemical CO 2 reduction (ECR CO 2 ) offers an attractive technology for converting flue gases into selective production of liquid fuels under mild operating conditions. , Demanding the production-specific fuel-grade compound, ECR CO 2 can be adjusted by the electrocatalytic conditions of electrolytes, applied potential, and different electrode materials. ,, To achieve efficient ECR CO 2 , various high-performance electrocatalysts have been reported in the literature. , Early studies have reported that CO has formed on Zn, Ag, and Au electrodes with a potential range of −0.45––0.9 V RHE , while Bi, Sn, Pb, S doped Cu, Cu 3 Sn, Cu/Au, and Cd electrodes are potentially involved in converting CO 2 to formic acid at of 0.05––0.25 V RHE . , Furthermore, Pt, Ni, Fe, and their nanocomposites-based hybrid electrodes are H 2 -selective materials with a potential of −0.25––0.45 V RHE , while the material classes such as carbides, sulfides, oxides, and their carbon-based electrodes possessed a selective production of alcohols such as CH 3 OH, CH 3 CH 2 OH, at a potential of −0.3––0.75 V RHE . , Of particular interest is the development of low-cost, efficient, and key functional electrodes for the selective production of CH 3 OH . Recent studies of RuO 2 , RuO 2 /TiO 2 , W/Au alloy, FeS 2 /NiS, cobalt/N-graphene, MoS 2 /Bi 2 S 3 , Cu 2– x Se­( y ) nanocatalysts, and multicomponent mixtures have been studied for the selective formation of CH 3 OH in alkaline solutions. ,− In spite of these developments, many challenges remain in the development of bifunctional electrocatalysts for increasing the production rate of CH 3 OH under mild reaction conditions .…”

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

“…Nontoxic, biocompatible, and sustainable solvents, such as deep eutectic solvents (DESs), and carrageenan as capping and reducing agent are gaining popularity in nanomaterial synthesis. Apart from potential tools for biomedical applications, recent studies have also shown the utilization of anisotropic nanomaterials in CO 2 mitigation and climate change control [20][21][22]. Several other studies reported novel environmental remediation approaches based on nanomaterials [23,24].…”