Synergy Effect of Pd Nanoparticles and Oxygen Vacancies for Enhancing TiO2 Photocatalytic CO2 Reduction

Xin JIA; Jinyu LI; Shihao DING; Qianqian SHEN; Husheng JIA; Jinbo XUE

doi:10.15541/jim20230170

Journals >Journal of Inorganic Materials >Volume 38 >Issue 11 >Page 1301 > Article

Journal of Inorganic Materials
Vol. 38, Issue 11, 1301 (2023)

Synergy Effect of Pd Nanoparticles and Oxygen Vacancies for Enhancing TiO₂ Photocatalytic CO₂ Reduction

Xin JIA^1,2, Jinyu LI^1,2, Shihao DING^1,2, Qianqian SHEN^1,2..., Husheng JIA^1,2 and Jinbo XUE^1,2,*|Show fewer author(s)

Author Affiliations

¹1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China

²2. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

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DOI: 10.15541/jim20230170 Cite this Article

Xin JIA, Jinyu LI, Shihao DING, Qianqian SHEN, Husheng JIA, Jinbo XUE. Synergy Effect of Pd Nanoparticles and Oxygen Vacancies for Enhancing TiO₂ Photocatalytic CO₂ Reduction [J]. Journal of Inorganic Materials, 2023, 38(11): 1301 Copy Citation Text

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(a-c) SEM images, (e-g)EDS spectra, (h) XRD patterns and (i) EPR spectra of (a, e) Pd-Ov-TNB, (b, f) Pd-TNB and (c, g) Ov-TNB; (d) Analytical mapping of EDS point of square area in (a)

1. (a-c) SEM images, (e-g)EDS spectra, (h) XRD patterns and (i) EPR spectra of (a, e) Pd-Ov-TNB, (b, f) Pd-TNB and (c, g) Ov-TNB; (d) Analytical mapping of EDS point of square area in (a)

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2. (a) TEM image of Pd-Ov-TNB; (b) HRTEM image of rectanglar area in Fig.(a); (c) HRTEM image and (d) SAED pattern of the nanobelt

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3. (a) XPS full survey spectra of Pd-Ov-TNB, Ov-TNB and Pd-TNB, with corresponding high-resolution XPS spectra of (b) O1s, (c) Ti2p and (d) Pd3d

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4. (a) Photocatalytic CO₂reduction performance of Pd-Ov-TNB, Ov-TNB and Pd-TNB and (b) recycling curves of Pd-Ov-TNB for photocatalytic CO₂ reduction

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5. (a) UV-Vis DRS spectra, (b) PL emission spectra, (c) SPV spectra, (d) I-t curves, (e) EIS plots, and (f) Mott-Schottky plots of Pd-Ov-TNB, Ov-TNB and Pd-TNB

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6. Photocatalytic CO₂ reduction mechanism of Pd-Ov-TNB

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Photocatalyst	Productivity/(μmol·g^-1·h^-1)					Selectivity for hydrocarbon products/%
Photocatalyst	CO	CH₄	C₂H₆	C₂H₄	H₂	Selectivity for hydrocarbon products/%
Pd-Ov-TNB	70.7	40.8	32.09	3.09	3.69	84.52
Pd-TNB	80.21	19.92	10.71	2.02	10.04	64.88
Ov-TNB	113.58	15.32	2.071	0	4.25	39.14

Table 1. Activities and selectivities for photocatalytic reduction of CO₂ over the obtained samples

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Photocatalyst	Productivity / (μmol·g^-1·h^-1)					Selectivity for hydrocarbon products/%	Ref.
Photocatalyst	CO	CH₄	C₂H₆	C₂H₄	H₂	Selectivity for hydrocarbon products/%	Ref.
Pd-Ov-TNB	70.7	40.8	32.09	3.087	3.69	84.52	This work
1%Ru-TiO_2-_x	5.06	31.36	-	-	-	96.12	[24]
In-TiO₂	81	244	2.78	0.06	-	92.48	[25]
In-TiO₂/g-C₃N₄	2.32	7.31	-	1.41	-	94.20	[26]
Au₆Pd₁/TiO₂	10.9	12.7	0.8	0.7	-	84.75	[27]
Cu^δ⁺/CeO₂-TiO₂	3.47	1.52	-	4.51	-	90.52	[28]
Pd/Mn-TiO₂	17.88	5.51	1.32	-	-	55.21	[29]
PdNRs-TiO₂	12.6	3.0	-	-	8.826	35.90	[30]
Ti₃C₂/P25	11.74	16.61	-	-	35.0	58.70	[31]
ZXN-TC	1296.4	98.11	41.07	2.25	-	34.85	[32]

Table 2. Photocatalytic performance of CO₂ reduction of photocatalysts in literature

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