Convenient synthesis of hollow tubular In2O3/PDA S-scheme inorganic/organic heterojunction photocatalyst for H2O2 production and its mechanism
Source abstract
Abstract
The development of heterojunction photocatalysts for hydrogen peroxide (H 2 O 2 ) generation is both environmentally sustainable and cost-effective but presents considerable challenges. In this study, we synthesized hollow tubular indium oxide (In 2 O 3 ) by calcining In-MIL-68 and subsequently composited it with polydopamine (PDA) via in-situ self-polymerization. This process resulted in the formation of an In 2 O 3 /PDA step-scheme (S-scheme) heterojunction. The optimized sample demonstrated H 2 O 2 production rates approximately 2.1 and 4.5 times higher than the pure In 2 O 3 and PDA, respectively. The enhanced photocatalytic performance of the In 2 O 3 /PDA composite is the result of several synergistic factors: increased light absorption due to the hollow structure, a larger specific surface area, and high separation efficiency of photo-generated electron-hole pairs facilitated by the S-scheme heterojunction. In-situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) confirmed the charge transfer pathway follows the S-scheme mechanism. This work not only highlights a practical method for constructing inorganic/organic S-scheme heterojunction photocatalysts but also provides a detailed analysis of their underlying mechanisms, paving the way for more efficient and sustainable photocatalytic systems. • Synthesized In 2 O 3 /PDA heterojunction photocatalyst for H 2 O 2 production. • The yield is 2.13 and 4.49 times higher than In 2 O 3 and PDA, respectively. • DRIFT and ESR spectra confirm a two-step single-electron reaction pathway. • In-situ irradiated XPS and CPD demonstrate S-scheme charge transfer.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · ZnO doping and properties
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References (63)
Show source-provided references
1. Production of hydrogen peroxide by photocatalytic processes10.1002/anie.201911609 ↗
2. Enhanced photocatalytic H2O2 production over inverse opal ZnO@ polydopamine S-scheme heterojunctions
3. A direct H2O2 production based on hollow porous carbon sphere-sulfur nanocrystal composites by confinement effect as oxygen reduction electrocatalysts10.1007/s12274-019-2496-3 ↗
4. Sunlight-driven sustainable production of hydrogen peroxide using a CdS–graphene hybrid photocatalyst10.1016/j.jcat.2016.10.028 ↗
5. Synthesis of full-spectrum-response Cu2(OH)PO4/g-C3N4 photocatalyst with outstanding photocatalytic H2O2 production performance via a “two channel route”10.1021/acssuschemeng.8b03171 ↗
6. Hydrogen peroxide synthesis: an outlook beyond the anthraquinone process10.1002/anie.200503779 ↗
7. Graphitic carbon nitride doped with biphenyl diimide: efficient photocatalyst for hydrogen peroxide production from water and molecular oxygen by sunlight10.1021/acscatal.6b02367 ↗
8. Enhancing photocatalytic H2O2 production with Au co-catalysts through electronic structure modification10.1038/s41467-024-47624-7 ↗
9. Palladium- und gold-palladium-katalysatoren für die direktsynthese von wasserstoffperoxid10.1002/ange.200802818 ↗
10. Direct synthesis of hydrogen peroxide based on microreactor technology10.1016/j.fuproc.2012.04.009 ↗
11. S-scheme heterojunction photocatalysts for H2O2 production10.1021/acs.jpclett.3c00811 ↗
12. Direct synthesis of hydrogen peroxide from hydrogen and oxygen: an overview of recent developments in the process10.1016/j.apcata.2008.07.043 ↗
13. Photocatalytic H2O2 production systems: design strategies and environmental applications
14. Effect of calcination temperatures on photocatalytic H2O2 production activity of ZnO nanorods10.1016/S1872-2067(21)63832-9 ↗
15. Anthraquinone centers modified covalent organic frameworks for boosted photocatalytic O2-to-H2O2 synthesis: inhibiting the in-situ decomposition of H2O210.1016/j.cej.2023.148494 ↗
16. Tailoring metal–organic frameworks for photocatalytic H2O2 production10.1016/j.ccr.2023.215597 ↗
17. COF/In2S3 S-scheme photocatalyst with enhanced light absorption and H2O2-production activity and fs-TA investigation10.1002/adma.202400288 ↗
18. Challenges of Z-scheme photocatalytic mechanisms10.1016/j.trechm.2022.08.008 ↗
19. BiOBr/COF S-scheme photocatalyst for H2O2 production via concerted two-electron pathway10.1016/j.jmst.2023.05.030 ↗
20. Emerging S-scheme photocatalyst
21. Construction of 2D S-scheme heterojunction photocatalyst
22. A review on ZnO-based S-scheme heterojunction photocatalysts10.1016/S1872-2067(23)64502-4 ↗
23. S-scheme heterojunction photocatalysts for CO2 reduction10.1016/j.matt.2022.09.009 ↗
24. Ultrafast electron transfer at the In2O3/Nb2O5 S-scheme interface for CO2 photoreduction10.1038/s41467-024-49004-7 ↗
25. In-situ constructing S-scheme/Schottky junction and oxygen vacancy on SrTiO3 to steer charge transfer for boosted photocatalytic H2 evolution10.1016/j.cej.2021.129231 ↗
26. Fabricating S-scheme BiOBr/Zn2In2S5 heterojunction for synergistic adsorption-photocatalytic degradation of tetracycline
27. Constructing an S-scheme CuBi2O4/Bi4O5I2 heterojunction for light emitting diode-driven pollutant degradation and bacterial inactivation10.1016/j.jcis.2022.04.034 ↗
28. Dynamics of photogenerated charge carriers in inorganic/organic S-scheme heterojunctions10.1021/acs.jpclett.2c01332 ↗
29. Construction of porous tubular In2S3@In2O3 with plasma treatment-derived oxygen vacancies for efficient photocatalytic H2O2 production in pure water via two-electron reduction10.1021/acsami.1c02953 ↗
30. MOF derived porous ZnO/C panocomposites for efficient dye photodegradation10.1021/acsaem.8b00822 ↗
31. MOF-on-MOF-derived hollow Co3O4/In2O3 nanostructure for efficient photocatalytic CO2 reduction10.1002/advs.202300797 ↗
32. Current trends on In2O3 based heterojunction photocatalytic systems in photocatalytic application10.1016/j.cej.2022.137804 ↗
33. Visible photocatalytic and photoelectrochemical activities of TiO2 nanobelts modified by In2O3 nanoparticles10.1016/j.jcis.2016.10.051 ↗
34. In2O3/oxygen doped g-C3N4 towards photocatalytic BPA degradation: balance of oxygen between metal oxides and doped g-C3N410.1016/j.jcis.2021.06.003 ↗
35. In2O3/boron doped g-C3N4 heterojunction catalysts with remarkably enhanced visible-light photocatalytic efficiencies10.1016/j.apsusc.2019.144241 ↗
36. Improved photocatalytic activities of porous In2O3 with large surface area by coupling with K-modified CuO for degrading pollutants10.1016/j.cattod.2018.10.039 ↗
37. Photocatalytic CO2 methanation over NiO/In2O3 promoted TiO2 nanocatalysts using H2O and/or H2 reductants10.1016/j.enconman.2016.04.057 ↗
38. Nature-mimic method to fabricate polydopamine/graphitic carbon nitride for enhancing photocatalytic degradation performance10.1021/acssuschemeng.7b01313 ↗
39. Versatile polydopamine platforms: synthesis and promising applications for surface modification and advanced nanomedicine10.1021/acsnano.9b04436 ↗
40. Core–shell structured TiO2@polydopamine for highly active visible-light photocatalysis10.1039/C6CC02041K ↗
41. TiO2/polydopamine S-scheme heterojunction photocatalyst with enhanced CO2-reduction selectivity10.1016/j.apcatb.2021.120039 ↗
42. Artificial photosynthesis of H2O2 through reversible photoredox transformation between catechol and o-benzoquinone on polydopamine-coated CdS10.1021/acscatal.2c03288 ↗
43. Oxygen vacancies in shape controlled Cu2O/reduced graphene oxide/In2O3 hybrid for promoted photocatalytic water oxidation and degradation of environmental pollutants10.1021/acsami.7b01605 ↗
44. Preparation of CuSe-PDA/g-C3N4 and its visible-light photocatalytic performance to dye degradation10.1007/s11356-020-10747-7 ↗
45. C3N4/PDA S-scheme heterojunction with enhanced photocatalytic H2O2 production performance and its mechanism
46. Yb3+-doped two-dimensional upconverting Tb-MOF nanosheets with luminescence sensing properties10.1021/acsami.2c00160 ↗
47. Efficient photocatalytic H2O2 production over K+-intercalated crystalline g-C3N4 with regulated oxygen reduction pathway10.1016/j.cej.2024.148844 ↗
48. Efficient overall photosynthesis of H2O2 by the BTz@Mn0.2Cd0.8S S-scheme heterojunction10.1007/s11426-024-2012-5 ↗
49. Construction of heterostructured ZnIn2S4@NH2-MIL-125(Ti) nanocomposites for visible-light-driven H2 production10.1016/j.apcatb.2017.09.043 ↗
50. Efficient photocatalytic H2O2 production and Cr(VI) reduction over a hierarchical Ti3C2/In4SnS8 Schottky junction
51. Photocatalytic metal–organic framework from CdS quantum dot incubated luminescent metallohydrogel10.1021/ja509019k ↗
52. Boosting the photosynthesis of hydrogen peroxide directly from pure water and air over S-scheme fiber heterojunction10.1007/s40843-023-2717-0 ↗
53. Plasmonic near-infrared-response S-scheme ZnO/CuInS2 photocatalyst for H2O2 production coupled with glycerin oxidation10.1002/adma.202406460 ↗
54. In-situ formatting donor-acceptor polymer with giant dipole moment and ultrafast exciton separation10.1038/s41467-024-45604-5 ↗
55. Cobalt phosphate hydroxide loaded g-C3N4 photocatalysts and its hydrogen production activity10.1016/j.ijhydene.2019.07.202 ↗
56. Spontaneously improved adsorption of H2O and its intermediates on electron-deficient Mn(3+δ)+ for efficient photocatalytic H2O2 production10.3866/PKU.WHXB202312007 ↗
57. TiO2-based S-scheme photocatalysts for solar energy conversion and environmental remediation10.1007/s40843-023-2754-8 ↗
58. 1D/0D heterostructured ZnIn2S4@ZnO S-scheme photocatalysts for improved H2O2 preparation10.1016/S1872-2067(23)64514-0 ↗
59. 3D ordered macroporous sulfur-doped g-C3N4/TiO2 S-scheme photocatalysts for efficient H2O2 production in pure water10.1016/j.jmst.2023.03.045 ↗
60. Self-assembled spherical In2O3/BiOI heterojunctions for enhanced photocatalytic CO2 reduction activity
61. Insights into molecular imprinting polydopamine in-situ activating peroxydisulfate for targeted removal of refractory organic pollutants: overlooked N site10.1016/j.apcatb.2023.122852 ↗
62. Floatable S-scheme photocatalyst for H2O2 production and organic synthesis10.1016/j.jmst.2022.09.002 ↗
63. CdS decorated resorcinol–formaldehyde spheres as an inorganic/organic S-scheme photocatalyst for enhanced H2O2 production10.1016/j.jmst.2023.03.054 ↗