DataVXACS Applied Materials & InterfacesPaper
journal article·2021-02-17

Enhanced Piezocatalytic Activity of Sr0.5Ba0.5Nb2O6 Nanostructures by Engineering Surface Oxygen Vacancies and Self-Generated Heterojunctions

Jian Dai, Ningning Shao, Suwei Zhang, Zhicheng Zhao, Yangke Long, Shiyin Zhao, Shun Li, Cuihua Zhao, Zuotai Zhang, Weishu Liu

ACS Applied Materials & Interfaces· Volume 13· Issue 6
Publisher page
Source abstract

Abstract

Piezocatalysis provides a promising strategy for directly converting weak mechanical energy into chemical energy. In this work, we report a simple one-step hydrogen reduction route for the simultaneous generation of surface defects and heterojunctions in Sr0.5Ba0.5Nb2O6 nanorods fabricated by a molten salt synthesis method. The as-fabricated Sr0.5Ba0.5Nb2O6/Sr2Nb2O7 nanocomposites with controllable oxygen vacancies exhibited excellent piezocatalytic activity under ultrasonic vibration, with an about 7 times enhancement of the rate constant (k = 0.0395 min–1) for rhodamine B degradation and an about 10 times enhancement of the water-splitting efficiency for hydrogen generation (109.4 μmol g–1 h–1) for the optimized sample (H2 annealed at 500 °C) compared to pristine Sr0.5Ba0.5Nb2O6 nanorods. This work demonstrates the essential role of a well-modulated oxygen vacancy concentration in the piezocatalytic activity and provides an inspiring guide for designing self-generated heterojunction piezocatalysts.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Advanced Photocatalysis Techniques · Ferroelectric and Piezoelectric Materials · Covalent Organic Framework Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China

Institute of Technology for Marine Civil Engineering, Shenzhen Institute of Information Technology, Shenzhen 518172, China

Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China

State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China

Institute of Quantum and Sustainable Technology (IQST), School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Funding

Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Foundation of the Basic Scientific Research Program, National Institute of Metrology · State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University

References (48)

Show source-provided references
1. 10.1002/adma.20160148610.1002/adma.201601486 ↗
2. 10.1002/aenm.20160047310.1002/aenm.201600473 ↗
3. 10.1016/j.arabjc.2016.10.00410.1016/j.arabjc.2016.10.004 ↗
4. 10.1016/j.ccr.2020.21318010.1016/j.ccr.2020.213180 ↗
5. 10.1021/jz100027t10.1021/jz100027t ↗
6. 10.1021/jp211455z10.1021/jp211455z ↗
7. 10.1021/acsanm.0c0003910.1021/acsanm.0c00039 ↗
8. 10.1039/C8CY01127C10.1039/C8CY01127C ↗
9. 10.1002/adma.20180015410.1002/adma.201800154 ↗
10. 10.1016/j.apcatb.2018.10.07810.1016/j.apcatb.2018.10.078 ↗
11. 10.1016/j.nanoen.2019.05.05810.1016/j.nanoen.2019.05.058 ↗
12. 10.1021/acsami.9b2335110.1021/acsami.9b23351 ↗
13. 10.1016/j.nanoen.2017.12.03410.1016/j.nanoen.2017.12.034 ↗
14. 10.1016/j.nanoen.2017.08.05810.1016/j.nanoen.2017.08.058 ↗
15. 10.1016/j.nanoen.2017.05.02910.1016/j.nanoen.2017.05.029 ↗
16. 10.1039/C9TA14007G10.1039/C9TA14007G ↗
17. 10.1021/cs200286210.1021/cs2002862 ↗
18. 10.1111/jace.1426410.1111/jace.14264 ↗
19. 10.1039/C9NR07544E10.1039/C9NR07544E ↗
20. 10.1002/adma.20150578510.1002/adma.201505785 ↗
21. 10.1016/j.nanoen.2019.10408310.1016/j.nanoen.2019.104083 ↗
22. 10.1016/j.nanoen.2018.11.02810.1016/j.nanoen.2018.11.028 ↗
23. 10.1016/j.jhazmat.2020.12310910.1016/j.jhazmat.2020.123109 ↗
24. 10.1039/C9NR00246D10.1039/C9NR00246D ↗
25. 10.1016/j.nanoen.2020.10478310.1016/j.nanoen.2020.104783 ↗
26. 10.1016/j.apcatb.2017.12.00810.1016/j.apcatb.2017.12.008 ↗
27. 10.1016/j.apcatb.2017.12.07410.1016/j.apcatb.2017.12.074 ↗
28. 10.1007/s10853-020-05053-z10.1007/s10853-020-05053-z ↗
29. 10.1016/j.apcatb.2020.11934010.1016/j.apcatb.2020.119340 ↗
30. 10.1002/adfm.20190761910.1002/adfm.201907619 ↗
31. 10.1016/S1872-2067(15)61126-310.1016/S1872-2067(15)61126-3 ↗
32. 10.1021/acsami.6b0080910.1021/acsami.6b00809 ↗
33. 10.1016/j.ceramint.2019.11.07310.1016/j.ceramint.2019.11.073 ↗
34. 10.1107/S0365110X6000028510.1107/S0365110X60000285 ↗
35. 10.1016/S0025-5408(02)01025-510.1016/S0025-5408(02)01025-5 ↗
36. 10.1016/j.ceramint.2003.12.08710.1016/j.ceramint.2003.12.087 ↗
37. 10.1016/j.physb.2007.07.02210.1016/j.physb.2007.07.022 ↗
38. 10.1021/acs.jpcc.8b0031610.1021/acs.jpcc.8b00316 ↗
39. 10.1016/j.jeurceramsoc.2018.11.04310.1016/j.jeurceramsoc.2018.11.043 ↗
40. 10.1016/j.jeurceramsoc.2005.06.01010.1016/j.jeurceramsoc.2005.06.010 ↗
41. 10.1039/C6NR00972G10.1039/C6NR00972G ↗
42. 10.1038/s41467-019-08697-x10.1038/s41467-019-08697-x ↗
43. 10.1016/j.nanoen.2019.10402410.1016/j.nanoen.2019.104024 ↗
44. 10.1021/acsami.8b0199110.1021/acsami.8b01991 ↗
45. 10.1016/j.nanoen.2019.01.09510.1016/j.nanoen.2019.01.095 ↗
46. 10.1016/j.nanoen.2019.10412710.1016/j.nanoen.2019.104127 ↗
47. 10.1016/j.nanoen.2020.10512210.1016/j.nanoen.2020.105122 ↗
48. 10.1002/anie.20170654910.1002/anie.201706549 ↗