Silver loaded protonated graphitic carbon nitride (Ag/pg-C3N4) nanosheets for stimulating CO2 reduction to fuels via photocatalytic bi-reforming of methane
Source abstract
Abstract
Abstract Silver-nanoparticles (Ag-NPs) supported over protonated graphitic-carbon nitride (pg-C3N4) for photocatalytic CO2 reduction in different reforming processes have been investigated. The Ag-NPs/pg-C3N4 samples, prepared by a combined ultrasonic-dispersion and photo-deposition process, were tested for photocatalytic CO2 reduction by H2O, steam reforming of methane (SRM), dry reforming of methane (DRM) and bi-reforming of methane (BRM). Pure g-C3N4 was favourable for CO evolution, while pg-C3N4 promoted both H2 and CH3OH production. Similarly, yield of CO over 5 wt% Ag/pg-C3N4 was 2.5 times more than CO over the pg-C3N4 and 5.2 times higher than for the g-C3N4 catalyst. This enhancement was evidently due to faster charge separation because of protonation and Ag-loading. More interestingly, performance of photocatalyst was entirely different when using different reforming systems. Enhanced photoactivity was achieved in BRM process compared to SRM and DRM process during efficient utilization of charge carriers. The highest QY was achieved for CO, H2 and CH3OH production during BRM process. This revealed that photocatalytic BRM is a promising approach for the production of CH3OH, CO and H2 in a single step. The results of this study fully demonstrate superiority of Ag/pg-C3N4 nanosheets for the development of photocatalytic dry/bi-reforming of methane systems for renewable fuels production.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Covalent Organic Framework Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. Synergistic effects of 2D/2D ZnV2O6/RGO nanosheets heterojunction for stable and high performance photo-induced CO2 reduction to solar fuels10.1016/j.cej.2017.11.111 ↗
2. Review on porous nanomaterials for adsorption and photocatalytic conversion of CO210.1016/S1872-2067(17)62955-3 ↗
3. Recent advancements in engineering approach towards design of photo-reactors for selective photocatalytic CO2 reduction to renewable fuels10.1016/j.jcou.2018.12.008 ↗
4. Promotion effect of zirconia on Mg(Ni,Al)O mixed oxides derived from hydrotalcites in CO2 methane reforming10.1016/j.apcatb.2017.06.024 ↗
5. Dry reforming of methane using different dielectric materials and DBD plasma reactor configurations10.1016/j.enconman.2017.04.057 ↗
6. Syngas production by means of biogas catalytic partial oxidation and dry reforming using Rh-based catalysts10.1016/j.cattod.2017.03.049 ↗
7. Chemical CO2 recycling via dry and bi reforming of methane using Ni-Sn/Al2O3 and Ni-Sn/CeO2-Al2O3 catalysts10.1016/j.apcatb.2017.10.047 ↗
8. Production of a hydrogen-enriched syngas by combined CO2-steam reforming of methane over Co-based catalysts supported on alumina modified with zirconia10.1016/j.cattod.2017.07.014 ↗
9. Combined steam and CO2 reforming of methane over La1-xSrxNiO3 perovskite oxides10.1016/j.cattod.2017.03.050 ↗
10. A critical review of CO2 photoconversion: catalysts and reactors10.1016/j.cattod.2013.12.006 ↗
11. Hierarchical 3D VO2/ZnV2O4 microspheres as an excellent visible light photocatalyst for CO2 reduction to solar fuels10.1016/j.apsusc.2018.10.273 ↗
12. Photocatalytic conversion of CH4 and CO2 to oxygenated compounds over Cu/CdS-TiO2/SiO2 catalyst10.1016/j.cattod.2004.09.004 ↗
13. Photocatalytic reduction of CO2 to CO in the presence of H2 or CH4 as a reductant over MgO10.1021/jp0362943 ↗
14. Photo-induced reactions in the CO2-methane system on titanate nanotubes modified with Au and Rh nanoparticles10.1016/j.apcatb.2016.06.057 ↗
15. Efficient visible light photocatalytic CO2 reforming of CH410.1021/acscatal.5b02653 ↗
16. Tailoring performance of La-modified TiO2 nanocatalyst for continuous photocatalytic CO2 reforming of CH4 to fuels in the presence of H2O10.1016/j.enconman.2017.12.089 ↗
17. Enhanced photocatalytic carbon dioxide reforming of methane to fuels over nickel and montmorillonite supported TiO2 nanocomposite under UV-light using monolith photoreactor10.1016/j.jclepro.2018.12.169 ↗
18. 2D-montmorillonite-dispersed g-C3N4/TiO2 2D/0D nanocomposite for enhanced photo-induced H2 evolution from glycerol-water mixture10.1016/j.apsusc.2018.12.076 ↗
19. Visible light activated photocatalytic behaviour of Eu (III) modified g-C3N4 for CO2 reduction and H2 evolution10.1016/j.apsusc.2018.10.143 ↗
20. The effect of N-doped form on visible light photoactivity of Z-scheme g-C3N4/TiO2 photocatalyst10.1016/j.apsusc.2018.10.035 ↗
21. 2D/2D g-C3N4/MnO2 nanocomposite as a direct Z-scheme photocatalyst for enhanced photocatalytic activity10.1021/acssuschemeng.7b03289 ↗
22. Megamerger in photocatalytic field: 2D g-C3N4 nanosheets serve as support of 0D nanomaterials for improving photocatalytic performance10.1016/j.apcatb.2018.08.071 ↗
23. g-C3N4 based composite photocatalysts for photocatalytic CO2 reduction10.1016/j.cattod.2017.05.033 ↗
24. Indirect Z-scheme assembly of 2D ZnV2O6/RGO/g-C3N4 nanosheets with RGO/pCN as solid-state electron mediators toward visible-light-enhanced CO2 reduction10.1021/acs.iecr.8b06053 ↗
25. A review on g-C3N4-based photocatalysts10.1016/j.apsusc.2016.07.030 ↗
26. g-C3N4/(Cu/TiO2) nanocomposite for enhanced photoreduction of CO2 to CH3OH and HCOOH under UV/visible light10.1016/j.jcou.2017.02.004 ↗
27. Photo-induced CO2 reduction by CH4/H2O to fuels over Cu-modified g-C3N4 nanorods under simulated solar energy10.1016/j.apsusc.2017.05.117 ↗
28. Cu-NPs embedded 1D/2D CNTs/pCN heterojunction composite towards enhanced and continuous photocatalytic CO2 reduction to fuels10.1016/j.apsusc.2019.04.220 ↗
29. Two dimensional Z-scheme AgCl/Ag/CaTiO3 nano-heterojunctions for photocatalytic hydrogen production enhancement10.1016/j.apsusc.2017.12.065 ↗
30. Direct evidence and enhancement of surface plasmon resonance effect on Ag-loaded TiO2 nanotube arrays for photocatalytic CO2 reduction10.1016/j.apsusc.2017.10.194 ↗
31. Graphitic carbon nitride (g-C3N4)-Pt-TiO2 nanocomposite as an efficient photocatalyst for hydrogen production under visible light irradiation10.1039/c2cp42484c ↗
32. Synthesis of synergetic phosphorus and cyano groups (C N) modified g-C3N4 for enhanced photocatalytic H2 production and CO2 reduction under visible light irradiation10.1016/j.apcatb.2018.03.094 ↗
33. Improving the photocatalytic hydrogen production of Ag/g-C3N4 nanocomposites by dye-sensitization under visible light irradiation10.1039/C5NR06346A ↗
34. Au/PtO nanoparticle-modified g-C3N4 for plasmon-enhanced photocatalytic hydrogen evolution under visible light10.1016/j.jcis.2015.08.076 ↗
35. Simultaneous synthesis-immobilization of Ag nanoparticles functionalized 2D gC3N4 nanosheets with improved photocatalytic activity10.1016/j.jallcom.2016.08.302 ↗
36. Combination of ultrasound-treated 2D g-C3N4 with Ag/black TiO2 nanostructure for improved photocatalysis10.1016/j.ultsonch.2017.12.019 ↗
37. Fabrication of heterostructured g-C3N4/ag-TiO2 hybrid photocatalyst with enhanced performance in photocatalytic conversion of CO2 under simulated sunlight irradiation10.1016/j.apsusc.2017.01.041 ↗
38. Photo-induced reduction of CO2 to CO with hydrogen over plasmonic Ag-NPs/TiO2 NWs core/shell hetero-junction under UV and visible light10.1016/j.jcou.2017.02.002 ↗
39. Synergistic effect in plasmonic Au/Ag alloy NPs co-coated TiO2 NWs toward visible-light enhanced CO2 photoreduction to fuels10.1016/j.apcatb.2016.11.062 ↗
40. A direct Z-scheme g-C3N4/SnS2 photocatalyst with superior visible-light CO2 reduction performance10.1016/j.jcat.2017.06.006 ↗
41. Enhanced selective photocatalytic reduction of CO2 to CH4 over plasmonic Au modified g-C3N4 photocatalyst under UV–vis light irradiation10.1016/j.apsusc.2018.01.071 ↗
42. Photocatalytic reduction of CO2 to CO over copper decorated g-C3N4 nanosheets with enhanced yield and selectivity10.1016/j.apsusc.2017.08.148 ↗
43. Hydrogen production from water and methane over Pt-loaded calcium titanate photocatalyst10.1039/b922793h ↗
44. Platinum loaded sodium tantalate photocatalysts prepared by a flux method for photocatalytic steam reforming of methane10.1016/j.apcata.2015.10.031 ↗
45. Optimization of hydrogen production by photocatalytic steam methane reforming over lanthanum modified Titanium (IV) oxide using response surface methodology
46. Doped ceria prepared by precipitation route for steam reforming of methane10.1016/j.cattod.2016.12.006 ↗
47. Ni/TiO2 for low temperature steam reforming of methane10.1016/j.ces.2015.10.021 ↗
48. Photocatalytic reduction of CO2 to CO in the presence of H2 or CH4 as a reductant over MgO10.1021/jp0362943 ↗
49. Photocatalytic conversion of methane and carbon dioxide over gallium oxide10.1016/j.cplett.2007.12.051 ↗
50. Effect of the addition of Ce and Zr over a flower-like NiO-MgO (111) solid solution for CO2 reforming of methane10.1016/j.jcou.2018.05.007 ↗
51. Elucidating the impact of Ni and Co loading on the selectivity of bimetallic NiCo catalysts for dry reforming of methane10.1016/j.cej.2018.07.009 ↗
52. Tunable Syn-gas ratio via bireforming over coke-resistant Ni/Mo2C catalyst10.1016/j.fuproc.2016.07.012 ↗
53. Sandwich-like Na0.23TiO2 nanobelt/Ti3C2 MXene composites from a scalable in situ transformation reaction for long-life high-rate lithium/sodium-ion batteries10.1016/j.nanoen.2018.01.030 ↗
54. Agn+ quantum dots obtained via in situ photodeposition method as photocatalytic CO2 reduction cocatalyst: borrowing redox conversion between Ag+ and Ago10.1016/j.apcatb.2018.10.053 ↗
55. Photocatalytic conversion of methane and carbon dioxide over gallium oxide10.1016/j.cplett.2007.12.051 ↗
56. Photocatalytic oxidation of methane over silver decorated zinc oxide nanocatalysts10.1038/ncomms12273 ↗