Metal-Free Catalyst with Large Carbon Defects for Efficient Direct Overall Water Splitting in Air at Room Pressure

Qingyao Wu; Mengmeng Zhu; Jingjing Cao; Xiao Wang; Yang Liu; Chensheng Xiang; Mingwang Shao; He Tian; Zhenhui Kang

doi:10.1021/acsami.0c02544

journal article·2020-07-08

Metal-Free Catalyst with Large Carbon Defects for Efficient Direct Overall Water Splitting in Air at Room Pressure

Qingyao Wu, Mengmeng Zhu, Jingjing Cao, Xiao Wang, Yang Liu, Chensheng Xiang, Mingwang Shao, He Tian, Zhenhui Kang

ACS Applied Materials & Interfaces· Volume 12· Issue 27

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Source abstract

Abstract

Hydrogen can be used as a conventional clean energy resource, only by obtaining it in a cheap, simple, and feasible way. From the perspective of solar energy utilization, photocatalytic water splitting is essentially limited by high electric energy and intermittent solar energy. Here, we demonstrate that the carbon defects could decompose water directly by using low-value mechanical energy in the daily environment without using the sacrificial agent. The prepared metal-free carbon catalyst (OPC-900) with rich graphene topological defects shows several redox states in acetonitrile, which can accumulate redox equivalents and respond for overall water splitting in air at room pressure. Under stirring or light conditions, charges can be created and accumulated on the catalyst surface and split water into H2 and O2 in low conductivity medium. The mechanical energy conversion efficiency of stirring in ultrapure water is 7.01%. Our work combines visible light with low-value mechanical energy for widespread decomposition of water to produce hydrogen in air under normal pressure.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · Copper-based nanomaterials and applications

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

Affiliations

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road, Suzhou 215123, Jiangsu, PR China

School of Materials Science and Engineering, Center of Electron Microscopy and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, PR China

Funding

State Administration of Foreign Experts Affairs · Collaborative Innovation Center of Suzhou Nano Science and Technology · Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Government of Guangdong Province · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions

References (50)

Show source-provided references

1. 10.1016/j.nanoen.2018.06.04710.1016/j.nanoen.2018.06.047 ↗

2. 10.1039/c7ta06077g10.1039/c7ta06077g ↗

3. 10.1021/jacs.8b1242810.1021/jacs.8b12428 ↗

4. 10.1002/adfm.20180677410.1002/adfm.201806774 ↗

5. 10.1038/nenergy.2016.15110.1038/nenergy.2016.151 ↗

6. 10.1126/science.aaa314510.1126/science.aaa3145 ↗

7. 10.1038/414625a10.1038/414625a ↗

8. 10.1038/s41467-018-04746-z10.1038/s41467-018-04746-z ↗

9. 10.1021/ja408105610.1021/ja4081056 ↗

10. 10.1016/j.ijhydene.2013.01.06510.1016/j.ijhydene.2013.01.065 ↗

11. 10.1039/c7ta04719c10.1039/c7ta04719c ↗

12. 10.1039/c7ta09367e10.1039/c7ta09367e ↗

13. 10.1039/c7ta06644a10.1039/c7ta06644a ↗

14. 10.1038/nmat231710.1038/nmat2317 ↗

15. 10.1039/c7sc01747b10.1039/c7sc01747b ↗

16. 10.1016/j.ccr.2019.03.01210.1016/j.ccr.2019.03.012 ↗

17. 10.1007/s13762-016-1000-910.1007/s13762-016-1000-9 ↗

18. 10.1021/jp993441h10.1021/jp993441h ↗

19. 10.1016/s0920-5861(00)00457-010.1016/s0920-5861(00)00457-0 ↗

20. 10.1039/a804549f10.1039/a804549f ↗

21. 10.1039/a903543e10.1039/a903543e ↗

22. 10.1126/science.aaa655010.1126/science.aaa6550 ↗

23. 10.1021/jacs.8b0262010.1021/jacs.8b02620 ↗

24. 10.1103/physrevb.79.07543010.1103/physrevb.79.075430 ↗

25. 10.1103/revmodphys.81.10910.1103/revmodphys.81.109 ↗

26. 10.1016/j.apcatb.2018.05.07110.1016/j.apcatb.2018.05.071 ↗

27. 10.1016/j.apsusc.2018.12.08510.1016/j.apsusc.2018.12.085 ↗

28. 10.1016/j.apsusc.2019.01.08510.1016/j.apsusc.2019.01.085 ↗

29. 10.1016/j.jcis.2018.09.03610.1016/j.jcis.2018.09.036 ↗

30. 10.1016/j.jallcom.2019.06.18510.1016/j.jallcom.2019.06.185 ↗

31. 10.1016/j.ultsonch.2019.04.02510.1016/j.ultsonch.2019.04.025 ↗

32. 10.1166/jnn.2012.542710.1166/jnn.2012.5427 ↗

33. 10.4028/www.scientific.net/amr.1109.50910.4028/www.scientific.net/amr.1109.509 ↗

34. 10.1002/adma.20160431810.1002/adma.201604318 ↗

35. 10.1021/acsami.8b0242310.1021/acsami.8b02423 ↗

36. 10.1016/j.chempr.2018.07.00510.1016/j.chempr.2018.07.005 ↗

37. 10.1103/physrevb.80.03340710.1103/physrevb.80.033407 ↗

38. 10.1103/physrevlett.104.09680410.1103/physrevlett.104.096804 ↗

39. 10.1016/j.cplett.2005.10.10610.1016/j.cplett.2005.10.106 ↗

40. 10.1016/0009-2614(86)80661-310.1016/0009-2614(86)80661-3 ↗

41. 10.1038/nature0971810.1038/nature09718 ↗

42. 10.1080/14686996.2018.149449310.1080/14686996.2018.1494493 ↗

43. 10.1016/j.apcatb.2019.11795910.1016/j.apcatb.2019.117959 ↗

44. 10.1038/nmat283010.1038/nmat2830 ↗

45. 10.1134/s001250161608001710.1134/s0012501616080017 ↗

46. 10.1103/physrevb.81.19542010.1103/physrevb.81.195420 ↗

47. 10.1103/physrevb.47.159310.1103/physrevb.47.1593 ↗

48. 10.1002/adma.20180662610.1002/adma.201806626 ↗

49. 10.1021/nn404614z10.1021/nn404614z ↗

50. 10.1002/adfm.20150439610.1002/adfm.201504396 ↗