Highly selective conversion of CO<sub>2</sub> to methanol on the CuZnO–ZrO<sub>2</sub> solid solution with the assistance of plasma

Fu, Han; Huai-ping, Liu; Cheng, Wenqiang; Xu, Qingping

doi:10.1039/d0ra00961j

Cited by 32 publications

(19 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, the main peak at 370 °C is regarded as surface bicarbonate species which has been demonstrated to be more thermostable. 41 As expected, 3PDI/ 1.0G-CN demonstrates the strongest TCD signal, clarifying that the promoted CO 2 absorption after G induced PDI modification.…”

Section: ■ Results and Discussionsupporting

confidence: 70%

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

et al. 2021

View full text Add to dashboard Cite

Inspired by natural photosynthesis, exploring high-efficiency Sscheme heterojunction photocatalysts, especially with all-organic ones, for CO 2 reduction is of great significance to tackle energy and environment issues. Herein, the dimension-matched perylene diimide/graphene-g-C 3 N 4 (PDI/G-CN) Sscheme nanosheet heterojunctions have been successfully constructed as an efficient full-spectrum responsive photocatalyst for converting CO 2 into CO and CH 4 with 16-time improvement compared with pristine CN nanosheets. On the basis of the steady and transient photoluminescence spectra, electron paramagnetic resonance signals, and kelvin probe measurement analyses, and so on, it is confirmed that the exceptional photoactivity is mainly ascribed to the interfacial modulation with G, by which the efficient S-scheme charge transfer and separation is strengthened and the optimized amount of highly dispersed PDI is increased via the π−π interactions. This work elucidates the potential practicability on all-organic CN-based S-scheme heterojunction photocatalysts for efficient solar-to-energy conversion by CO 2 reduction.

show abstract

Section: ■ Results and Discussionsupporting

confidence: 70%

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

et al. 2021

View full text Add to dashboard Cite

show abstract

“… 43 However, compared with the blank substrate, the intensities of the diffraction peaks of γ-Al 2 O 3 and Ni/γ-Al 2 O 3 were obviously reduced, revealing that the crystallinity of the honeycomb materials was decreased and the dispersion was enhanced after loading γ-Al 2 O 3 and active metal Ni successively. 44 For the blank substrate, its diffraction peaks presented sharper and stronger intensities after the steam reforming reaction. This finding suggests that the crystallite size was increased during the reaction process, which lowered the specific surface area, 45 as confirmed by the analysis of their textural properties.…”

Section: Results and Discussionmentioning

confidence: 97%

Plasma-Catalytic Reforming of Naphthalene and Toluene as Biomass Tar over Honeycomb Catalysts in a Gliding Arc Reactor

Mei

Liu

Yanık

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Biomass gasification is a promising and sustainable process to produce renewable and CO 2 -neutral syngas (H 2 and CO). However, the contamination of syngas with tar is one of the major challenges to limit the deployment of biomass gasification on a commercial scale. Here, we propose a hybrid plasma-catalytic system for steam reforming of tar compounds over honeycomb-based catalysts in a gliding arc discharge (GAD) reactor. The reaction performances were evaluated using the blank substrate and coated catalytic materials (γ-Al 2 O 3 and Ni/γ-Al 2 O 3 ). Compared with the plasma alone process, introducing the honeycomb materials in GAD prolonged the residence time of reactant molecules for collision with plasma reactive species to promote their conversions. The presence of Ni/γ-Al 2 O 3 gave the best performance with the high conversion of toluene (86.3%) and naphthalene (75.5%) and yield of H 2 (35.0%) and CO (49.1%), while greatly inhibiting the formation of byproducts. The corresponding highest overall energy efficiency of 50.9 g/kWh was achieved, which was 35.4% higher than that in the plasma alone process. Characterization of the used catalyst and long-term running indicated that the honeycomb material coated with Ni/γ-Al 2 O 3 had strong carbon resistance and excellent stability. The superior catalytic performance of Ni/γ-Al 2 O 3 can be mainly ascribed to the large specific surface area and the in situ reduction of nickel oxide species in the reaction process, which promoted the interaction between plasma reactive species and catalysts and generated the plasma-catalysis synergy.

show abstract

“…The α peak corresponds to the weak adsorption sites, i.e., hydroxyl groups on the catalysts surface, the β peak corresponds to the moderate adsorption sites, i.e., the combination of metal and oxygen, and the γ peak corresponds to the strong adsorption sites, i.e., lowcoordination oxygen atoms. [21] Obviously, these peaks shift to higher temperatures compared with those of CeO 2 , indicating that CuO x -5CeO 2 has stronger adsorption capability toward CO 2 molecules. Considering that the reaction temperature is mainly above 270 °C, moderate basic sites can be more correlated to the active sites for CO 2 hydrogenation.…”

Section: Catalytic Performancementioning

confidence: 94%

“…In addition, the β peaks of CuO x -2CeO 2 , CuO x -10CeO 2 and CuO x -20CeO 2 shift to lower temperature compared with CuO x -5CeO 2 , indicating that they have lower CO 2 -adsorption capability. [20][21][22] Therefore, the stronger CO 2 adsorption capacity of CuO x -5CeO 2 may be one of the main reasons to the better performance.…”

Section: Catalytic Performancementioning

confidence: 99%

Boosting the Catalytic Performance of CuO_x in CO₂ Hydrogenation by Incorporating CeO₂ Promoters

Pan

Wang

et al. 2022

Advanced Sustainable Systems

View full text Add to dashboard Cite

the selective hydrogenation route is more attractive, because the CO 2 can be converted to value-added chemicals and fuels. [2] Through delicately designing the catalysts and accurately controlling the reaction conditions, various products, including olefins, gasoline, aromatics, ethanol, and the platform compounds (CO and methanol) can be produced. [3,4] Specifically, the selective conversion of CO 2 to CO is one of the most important ones, this is because CO can be used to transform to long-chain hydrocarbons via the Fischer-Tropsch process. [3b,4] Although great achievements have been made, many challenges still remain, especially the low-temperature CO 2 activation as well as the wide temperature-range CO selectivity due to the formation of by-product CH 4 . [5] More recently, transition metal Cu has received more attention as the active sites for CO 2 hydrogenation. Cu-based catalysts have some distinguished features, such as high selectivity toward CO, low cost, and unique electronic properties. [6] However, they are also facing problems in their poor activity. [6b,7] Therefore, it is pressing for seeking feasible route to overcome the natural limitation of Cu elements in CO 2 hydrogenation. Previous reports provide a potential solution by integrating CeO 2 as the promoters. CeO 2 is considered to be an ideal active material for CO 2 activation because of the existence of large amounts of oxygen vacancies on its surface, who possess powerful capability in CO 2 adsorption and activation. [8] However, CeO 2 is very difficult to activate hydrogen directly. Therefore, it is generally to combine CeO 2 with a component that can activate hydrogen to build an effective catalyst, the core of which is the precise control of the interface. [8,9] The interface can not only promote the activation of reactants by the multiple catalytic sites provided, [10] but also adjust the reaction pathways by the strong electronic interaction induced. [11] So far, many works have been reported based on Cu-CeO 2 catalysts for CO 2 hydrogenation, [7,8,12] however, it still lacks effective methods to achieve the goal of precisely controlling the Cu-CeO 2 interface, [13] as well as the deep understanding of its unique reactivity.Herein, we developed a facile and effective strategy to integrate CeO 2 nanoparticles (NPs) on Cu 2 O nanocubes (NCs) in a controllable way (the obtained sample denoted as CuO x -XCeO 2 , X refers to the feed amount of Ce(NO 3 ) 3 , x represents Cu 2 O and CuO compound). When utilized as the catalysts for CO 2 hydrogenation, they present good catalytic performance. Among the Copper is one of the most promising components in CO 2 hydrogenation reactions, however, it still seriously suffers from the lower capability in CO 2 activity, as well as poor durability. Herein, a novel copper-cerium mixed metal oxide is fabricated via a controllable surface deposition route, showing excellent catalytic performance in CO 2 hydrogenation. Of particular note, among the various samples with tunable Cu/Ce molar ratios, t...

show abstract

Highly selective conversion of CO₂ to methanol on the CuZnO–ZrO₂ solid solution with the assistance of plasma

Abstract: CuZnO–ZrO2–C was prepared by a co-precipitation method.

Cited by 32 publications

References 27 publications

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

Plasma-Catalytic Reforming of Naphthalene and Toluene as Biomass Tar over Honeycomb Catalysts in a Gliding Arc Reactor

Boosting the Catalytic Performance of CuO_x in CO₂ Hydrogenation by Incorporating CeO₂ Promoters

Contact Info

Product

Resources

About

Highly selective conversion of CO2 to methanol on the CuZnO–ZrO2 solid solution with the assistance of plasma

Abstract: CuZnO–ZrO2–C was prepared by a co-precipitation method.

Cited by 32 publications

References 27 publications

Graphene-Modulated PDI/g-C3N4 All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO2 Reduction under Full-Spectrum Irradiation

Graphene-Modulated PDI/g-C3N4 All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO2 Reduction under Full-Spectrum Irradiation

Plasma-Catalytic Reforming of Naphthalene and Toluene as Biomass Tar over Honeycomb Catalysts in a Gliding Arc Reactor

Boosting the Catalytic Performance of CuOx in CO2 Hydrogenation by Incorporating CeO2 Promoters

Contact Info

Product

Resources

About

Highly selective conversion of CO₂ to methanol on the CuZnO–ZrO₂ solid solution with the assistance of plasma

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

Graphene-Modulated PDI/g-C₃N₄ All-Organic S-Scheme Heterojunction Photocatalysts for Efficient CO₂ Reduction under Full-Spectrum Irradiation

Boosting the Catalytic Performance of CuO_x in CO₂ Hydrogenation by Incorporating CeO₂ Promoters