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| Home > Publications database > A surface reconstruction route for increasingly improved photocatalytic H$_2$O$_2$ production using Sr$_2$Bi$_3$Ta$_2$O$_{11}$Cl > print |
| Home > Publications database > A surface reconstruction route for increasingly improved photocatalytic H$_2$O$_2$ production using Sr$_2$Bi$_3$Ta$_2$O$_{11}$Cl > print |
| 001 | 626275 | ||
| 005 | 20250625130751.0 | ||
| 024 | 7 | _ | |a 10.1039/D4SC04866K |2 doi |
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| 245 | _ | _ | |a A surface reconstruction route for increasingly improved photocatalytic H$_2$O$_2$ production using Sr$_2$Bi$_3$Ta$_2$O$_{11}$Cl |
| 260 | _ | _ | |a Cambridge |c 2024 |b RSC |
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| 520 | _ | _ | |a Photocatalytic hydrogen peroxide (H$_2$O$_2$) generation is attractive for the chemical industry and energy production. However, photocatalysts generally deteriorate significantly during use to limit their application. Here we present highly active Sr$_2$Bi$_3$Ta$_2$O$_{11}$Cl single-crystal nanoplates for conversion of O$_2$ to H$_2$O$_2$ using ambient air with a production rate of ∼3 mmol h$^{−1}$ g$^{−1}$ (maximum 17.5% photon conversion). Importantly, Sr$_2$Bi$_3$Ta$_2$O$_{11}$Cl is not only stable during 30 days of H$_2$O$_2$ production but also gets consistently activated to increase the H$_2$O$_2$ yield by >244%, unlike any other catalyst for H$_2$O$_2$ production. Multi-pronged characterization confirms that the synergistic increase in activity originates from in situ surface reconstruction by oxygen-deficient vacancy associate formation that improves (i) surface oxygen adsorption, (ii) sunlight harvesting, and (iii) charge-transfer from the low-valent metal atoms surrounding oxygen vacancies to reactants. The study establishes the prospects of rational defect engineering for realizing non-degrading photocatalysts for realistic H$_2$O$_2$ production . |
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| 700 | 1 | _ | |a Sah, Arjun Kumar |b 1 |
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| 700 | 1 | _ | |a Kommula, Bramhaiah |0 0000-0002-8302-4109 |b 4 |
| 700 | 1 | _ | |a Sanyal, Dirtha |0 0000-0003-2490-3610 |b 5 |
| 700 | 1 | _ | |a Gautam, Ujjal |0 P:(DE-H253)PIP1085398 |b 6 |e Corresponding author |
| 773 | _ | _ | |a 10.1039/D4SC04866K |g Vol. 15, no. 41, p. 17049 - 17057 |0 PERI:(DE-600)2559110-1 |n 41 |p 17049 - 17057 |t Chemical science |v 15 |y 2024 |x 2041-6520 |
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