Cu-NPs embedded 1D/2D CNTs/pCN heterojunction composite towards enhanced and continuous photocatalytic CO2 reduction to fuels
Source abstract
Abstract
Abstract Well-designed 1D/2D composite, consisting of carbon nanotubes modified protonated carbon nitrides (CNTs/pCN) embedded with Cu-NPs were synthesized by a facile sonicated assisted chemical method. The performance of catalysts towards dynamic CO2 reduction to selective fuels was conducted under UV/visible light irradiations in a continuous flow photoreactor. Photo-activity of g-C3N4 for CO production was increased by 2.38 folds after surface charge modification due to faster charge carrier separation. Loading 3 wt% Cu and 0.5 wt% CNTs into pCN gave highest activity for the production of CO, CH4 and CH3OH under visible light. The highest CO yield as the main product over Cu-CNTs/pCN composite was 560 μmole g-cat−1 h−1, a 1.21, 1.36, 3.78 and 9.03 folds higher than using Cu/pCN, CNTs/pCN, pCN and g-C3N4 samples, respectively. This significantly enhanced photo-activity can be attributed to visible light absorption and multi-stage charges separation in the presence of Cu/CNTs. More interestingly, CO obtained under visible light was 4 times higher than using UV-light, while performance for CH4 production was 14 folds higher with visible light than using UV-light under the same operating conditions. Among the different catalyst loadings, 150 mg gave highest productivity, evidently due to limitations in exposed catalyst active surface area. Additionally, Cu-CNTs/pCN photocatalyst prevailed excellent stability in cyclic runs for continuous CO2 reduction. The findings of this work would be attractive for the development of CO2 conversion systems with renewable fuels production under solar energy.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · CO2 Reduction Techniques and Catalysts · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (67)
Show source-provided references
1. Heterojunction p-n-p Cu2O/S-TiO2/CuO: synthesis and application to photocatalytic conversion of CO2 to methane10.1016/j.jcou.2017.05.008 ↗
2. MMT-supported Ni/TiO2 nanocomposite for low temperature ethanol steam reforming toward hydrogen production10.1016/j.cej.2017.06.012 ↗
3. Hierarchical 3D VO2/ZnV2O4 microspheres as an excellent visible light photocatalyst for CO2 reduction to solar fuels10.1016/j.apsusc.2018.10.273 ↗
4. 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 ↗
5. 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 ↗
6. Enhanced selective photocatalytic CO2 reduction into CO over Ag/CdS nanocomposites under visible light10.1016/j.apsusc.2016.06.148 ↗
7. Enhanced photocatalytic properties of lanthanide-TiO2 nanotubes: An experimental and theoretical study10.1016/j.apcatb.2016.12.044 ↗
8. Building a direct Z-scheme heterojunction photocatalyst by ZnIn2S4 nanosheets and TiO2 hollowspheres for highly-efficient artificial photosynthesis10.1016/j.cej.2018.05.094 ↗
9. A review on TiO2-based Z-scheme photocatalysts10.1016/S1872-2067(17)62962-0 ↗
10. Fabrication of highly efficient and stable indirect Z-scheme assembly of AgBr/TiO2 via graphene as a solid-state electron mediator for visible light induced enhanced photocatalytic H2 production10.1016/j.apsusc.2018.08.250 ↗
11. 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 ↗
12. Alternative photocatalysts to TiO2 for the photocatalytic reduction of CO210.1016/j.apsusc.2016.06.172 ↗
13. Photocatalytic carbon dioxide reduction to fuels in continuous flow monolith photoreactor using montmorillonite dispersed Fe/TiO2 nanocatalyst10.1016/j.jclepro.2017.09.118 ↗
14. Design of spatially separated Au and CoO dual cocatalysts on hollow TiO2 for enhanced photocatalytic activity towards the reduction of CO2 to CH410.1016/j.cej.2018.12.095 ↗
15. Supercritical synthesis of platinum-modified titanium dioxide for solar fuel production from carbon dioxide
16. Review on porous nanomaterials for adsorption and photocatalytic conversion of CO210.1016/S1872-2067(17)62955-3 ↗
17. Plasmon enhancement on photocatalytic hydrogen production over the Z-scheme photosynthetic heterojunction system10.1016/j.apcatb.2017.03.050 ↗
18. Double Z-scheme ZnO/ZnS/g-C3N4 ternary structure for efficient photocatalytic H2 production10.1016/j.apsusc.2017.07.186 ↗
19. Preparation of 2D/2D g-C3N4 nanosheet@ZnIn2S4 nanoleaf heterojunctions with well-designed high-speed charge transfer nanochannels towards high-efficiency photocatalytic hydrogen evolution10.1016/j.apcatb.2017.08.071 ↗
20. Facile fabrication of novel SiO2/g-C3N4 core–shell nanosphere photocatalysts with enhanced visible light activity10.1016/j.apsusc.2015.09.041 ↗
21. Cocatalysts for selective photoreduction of CO2 into solar fuels10.1021/acs.chemrev.8b00400 ↗
22. Facet effect of Pd cocatalyst on photocatalytic CO2 reduction over g-C3N410.1016/j.jcat.2017.02.005 ↗
23. Improved visible-light catalytic activities of novel Au/P-doped g-C3N4 photocatalyst for solar fuel production and mechanism10.1016/j.apcata.2018.10.007 ↗
24. Mesostructured CeO2/g-C3N4 nanocomposites: remarkably enhanced photocatalytic activity for CO2 reduction by mutual component activations10.1016/j.nanoen.2015.11.010 ↗
25. A direct Z-scheme plasmonic AgCl@g-C3N4 heterojunction photocatalyst with superior visible light CO2 reduction in aqueous medium10.1016/j.apsusc.2018.04.111 ↗
26. Visible light activated photocatalytic behaviour of Eu (III) modified g-C3N4 for CO2 reduction and H2 evolution10.1016/j.apsusc.2018.10.143 ↗
27. Non-noble metal Cu as a cocatalyst on TiO2 nanorod for highly efficient photocatalytic hydrogen production10.1016/j.apsusc.2018.03.209 ↗
28. Simultaneous SO2 removal and CO2 reduction in a nano-BiVO4|Cu-In nanoalloy photoelectrochemical cell10.1016/j.cej.2018.08.093 ↗
29. Amorphizing of Cu nanoparticles toward highly efficient and robust electrocatalyst for CO2 reduction to liquid fuels with high faradaic efficiencies10.1002/adma.201706194 ↗
30. Coupling photocatalytic CO2 reduction with benzyl alcohol oxidation to produce benzyl acetate over Cu2O/Cu10.1039/C8CY00084K ↗
31. Synthesis of GO-modified Cu2O nanosphere and the photocatalytic mechanism of water splitting for hydrogen production10.1016/j.ijhydene.2016.10.157 ↗
32. A Cu+1/Cu-TiO2 mesoporous nanocomposite exhibits improved H2 production from H2O under direct solar irradiation10.1016/j.jcat.2016.11.021 ↗
33. Selective reduction of CO2 to alcohol products on octahedral catalyst of carbonized Cu(BTC) doped with Pd nanoparticles in a photoelectrochemical cell10.1016/j.cej.2018.10.091 ↗
34. Copper-doped titania photocatalysts for simultaneous reduction of CO2 and production of H2 from aqueous sulfide10.1016/j.apcatb.2015.06.019 ↗
35. Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor10.1016/j.apcata.2014.12.053 ↗
36. Photocatalytic conversion of CO2 into methanol over Cu-C/TiO2 nanoparticles under UV light and natural sunlight10.1016/j.jphotochem.2017.07.046 ↗
37. Photocatalytic reduction of CO2 to CO over copper decorated g-C3N4 nanosheets with enhanced yield and selectivity10.1016/j.apsusc.2017.08.148 ↗
38. 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 ↗
39. Advances in photocatalytic disinfection of bacteria: development of photocatalysts and mechanisms10.1016/j.jes.2015.05.003 ↗
40. Structure regulation of ZnS@g-C3N4/TiO2 nanospheres for efficient photocatalytic H2 production under visible-light irradiation10.1016/j.cej.2018.04.038 ↗
41. 2D-2D MnO2/g-C3N4 heterojunction photocatalyst: in-situ synthesis and enhanced CO2 reduction activity10.1016/j.carbon.2017.05.024 ↗
42. WO3/g-C3N4 two-dimensional composites for visible-light driven photocatalytic hydrogen production10.1016/j.ijhydene.2018.01.117 ↗
43. Novel visible-light-driven CdIn2S4/mesoporous g-C3N4 hybrids for efficient photocatalytic reduction of CO2 to methanol10.1016/j.molcata.2016.12.006 ↗
44. Biochar-templated g-C3N4/Bi2O2CO3/CoFe2O4 nano-assembly for visible and solar assisted photo-degradation of paraquat, nitrophenol reduction and CO2 conversion10.1016/j.cej.2018.01.105 ↗
45. A direct Z-scheme g-C3 N4/SnS2 photocatalyst with superior visible-light CO2 reduction performance10.1016/j.jcat.2017.06.006 ↗
46. Metals free MWCNTs@TiO2@MMT heterojunction composite with MMT as a mediator for fast charges separation towards visible light driven photocatalytic hydrogen evolution10.1016/j.apsusc.2018.08.240 ↗
47. Enhanced photocatalytic activity towards degradation and H2 evolution over one dimensional TiO2@MWCNTs heterojunction10.1016/j.apsusc.2017.01.096 ↗
48. Enhanced photocatalytic hydrogen production activity of noble metal free MWCNT-TiO2 nanocomposites10.1016/j.ijhydene.2018.01.011 ↗
49. Enhanced visible light responsive MWCNT/TiO2 core–shell nanocomposites as the potential photocatalyst for reduction of CO2 into methane10.1016/j.solmat.2013.11.034 ↗
50. Carbon nanotube-supported Cu3P as high-efficiency and low-cost cocatalysts for exceptional semiconductor-free photocatalytic H2 evolution10.1021/acssuschemeng.8b05185 ↗
51. La-modified TiO2/carbon nanotubes assembly nanocomposite for efficient photocatalytic hydrogen evolution from glycerol-water mixture10.1016/j.ijhydene.2018.12.095 ↗
52. Noble metal-free g-C3N4/TiO2/CNT ternary nanocomposite with enhanced photocatalytic performance under visible-light irradiation via multi-step charge transfer process10.1016/j.solener.2017.09.012 ↗
53. Enhanced photocatalytic activity of graphitic carbon nitride/carbon nanotube/Bi2WO6 ternary Z-scheme heterojunction with carbon nanotube as efficient electron mediator10.1016/j.jcis.2017.10.074 ↗
54. Metal free MWCNTs@TiO2@MMT heterojunction composite with MMT as a mediator for fast charges separation towards visible light driven photocatalytic hydrogen evolution10.1016/j.apsusc.2018.08.240 ↗
55. Construction of hierarchical 2D-2D Zn3In2S6/fluorinated polymeric carbon nitride nanosheets photocatalyst for boosting photocatalytic degradation and hydrogen production performance10.1016/j.apcatb.2018.03.105 ↗
56. Carbon-based two-dimensional layered materials for photocatalytic CO2 reduction to solar fuels10.1016/j.ensm.2015.12.003 ↗
57. 1D metallic MoO2-C as co-catalyst on 2D g-C3N4 semiconductor to promote photocatalytic hydrogen production10.1016/j.apsusc.2018.03.226 ↗
58. Fabrication of 2D SnS2/g-C3N4 heterojunction with enhanced H2 evolution during photocatalytic water splitting10.1016/j.jcis.2018.04.038 ↗
59. Enhanced photocatalytic H2-production activity of C-dots modified g-C3N4/TiO2 nanosheets composites10.1016/j.jcis.2017.12.002 ↗
60. Ag-La loaded protonated carbon nitrides nanotubes (pCNNT) with improved charge separation in a monolithic honeycomb photoreactor for enhanced bireforming of methane (BRM) to fuels10.1016/j.apcatb.2019.01.076 ↗
61. Well-designed ZnV2O6/g-C3N4 2D/2D nanosheets heterojunction with faster charges separation via pCN as mediator towards enhanced photocatalytic reduction of CO2 to fuels10.1016/j.apcatb.2018.09.097 ↗
62. g-C3N4/(Cu/TiO2) nanocomposite for enhanced photoreduction of CO2 to CH3OH and HCOOH under UV/visible light10.1016/j.jcou.2017.02.004 ↗
63. Heteroatoms binary-doped hierarchical porous g-C3N4 nanobelts for remarkably enhanced visible-light-driven hydrogen evolution10.1016/j.apcatb.2017.12.045 ↗
64. Highly efficient hydrogen production via water splitting using Pt@MWNT/TiO2 ternary hybrid composite as a catalyst under UV–visible light10.1016/j.synthmet.2014.12.014 ↗
65. Mechanistic characteristics of surface modified organic semiconductor g-C3N4 nanotubes alloyed with titania10.3390/ma10010028 ↗
66. 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 ↗
67. Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel10.1007/s40843-014-0003-1 ↗