Zipping Up NiFe(OH)x-Encapsulated Hematite To Achieve an Ultralow Turn-On Potential for Water Oxidation
Source abstract
Abstract
The addition of oxygen evolution reaction (OER) catalysts improves photoelectrochemical (PEC) performance of photoanodes via facilitating charge transfer at the electrode/electrolyte interface and/or passivating surface hole-trap states. Yet, the poor interface and coating quality of the catalyst overlayer often plagues the performance enhancement due to the interference of hole/electron transport across the photoanode/catalyst interface. Here we address these challenges using a citrate-assisted method that allows conformal deposition of Ni–Fe hydroxide [NiFe(OH)x] overlayers on hematite nanowire photoanodes. These NiFe(OH)x overlayers significantly enhance the surface hole transfer kinetics and passivates the surface states. The NiFe(OH)x-encapsulated hematite nanowires exhibit an early turn-on potential of 0.53 V vs RHE. The findings highlight not only the importance of uniform OER catalyst coating but also the critical role of molecular linkers in boosting the performance of photoanodes.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Iron oxide chemistry and applications · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
Funding
Ministry of Science and Technology of the People's Republic of China · Ministry of Education of the People's Republic of China · Government of Guangdong Province · National Aeronautics and Space Administration · China Scholarship Council · National Natural Science Foundation of China · Guangdong Provincial Key Platform and Major Scientific Research Projects for Colleges and Universities
References (54)
Show source-provided references
1. 10.1038/238037a010.1038/238037a0 ↗
2. 10.1038/s41565-018-0251-710.1038/s41565-018-0251-7 ↗
3. 10.1038/s41565-018-0134-y10.1038/s41565-018-0134-y ↗
4. 10.1039/C5EE03871E10.1039/C5EE03871E ↗
5. 10.1021/acsenergylett.7b0113810.1021/acsenergylett.7b01138 ↗
6. 10.1002/anie.20151086910.1002/anie.201510869 ↗
7. 10.1038/s41467-018-06838-210.1038/s41467-018-06838-2 ↗
8. 10.1002/anie.20130626310.1002/anie.201306263 ↗
9. 10.1002/cssc.20100041610.1002/cssc.201000416 ↗
10. 10.1021/acsenergylett.8b0033610.1021/acsenergylett.8b00336 ↗
11. 10.1016/j.nanoen.2014.02.00810.1016/j.nanoen.2014.02.008 ↗
12. 10.1002/anie.20181058310.1002/anie.201810583 ↗
13. 10.1039/C7EE01475A10.1039/C7EE01475A ↗
14. 10.1002/smll.20170417910.1002/smll.201704179 ↗
15. 10.1002/anie.20160592410.1002/anie.201605924 ↗
16. 10.1039/C8EE01346B10.1039/C8EE01346B ↗
17. 10.1038/nmat381110.1038/nmat3811 ↗
18. 10.1021/acscatal.5b0104510.1021/acscatal.5b01045 ↗
19. 10.1021/acsenergylett.6b0030310.1021/acsenergylett.6b00303 ↗
20. 10.1038/s41560-017-0048-110.1038/s41560-017-0048-1 ↗
21. 10.1002/aenm.20170055510.1002/aenm.201700555 ↗
22. 10.1021/acsenergylett.6b0005910.1021/acsenergylett.6b00059 ↗
23. 10.1038/ncomms844710.1038/ncomms8447 ↗
24. 10.1021/cm001202x10.1021/cm001202x ↗
25. 10.1016/j.electacta.2015.10.04810.1016/j.electacta.2015.10.048 ↗
26. 10.1039/b910970f10.1039/b910970f ↗
27. 10.1016/0020-1693(94)04077-X10.1016/0020-1693(94)04077-X ↗
28. 10.1021/acs.jpcc.5b0491010.1021/acs.jpcc.5b04910 ↗
29. 10.1021/nl200708y10.1021/nl200708y ↗
30. 10.1021/nl202316j10.1021/nl202316j ↗
31. 10.1021/ar980112j10.1021/ar980112j ↗
32. 10.1039/B404964K10.1039/B404964K ↗
33. 10.1016/0040-6031(96)02906-110.1016/0040-6031(96)02906-1 ↗
34. 10.1016/j.foodhyd.2017.04.02310.1016/j.foodhyd.2017.04.023 ↗
35. 10.1016/j.hydromet.2015.09.02210.1016/j.hydromet.2015.09.022 ↗
36. 10.1016/j.carbon.2016.08.02010.1016/j.carbon.2016.08.020 ↗
37. 10.1021/cm035248c10.1021/cm035248c ↗
38. 10.1016/j.apsusc.2006.05.02310.1016/j.apsusc.2006.05.023 ↗
39. 10.1016/S1386-1425(99)00154-710.1016/S1386-1425(99)00154-7 ↗
40. 10.1016/j.biomaterials.2010.01.05710.1016/j.biomaterials.2010.01.057 ↗
41. 10.1016/j.jeurceramsoc.2011.08.01510.1016/j.jeurceramsoc.2011.08.015 ↗
42. 10.1016/0304-386X(95)00104-O10.1016/0304-386X(95)00104-O ↗
43. 10.1126/science.79300810.1126/science.793008 ↗
44. 10.1021/cm051370v10.1021/cm051370v ↗
45. 10.1021/ja00067a06310.1021/ja00067a063 ↗
46. 10.1038/nature0095210.1038/nature00952 ↗
47. 10.1021/jacs.8b0803510.1021/jacs.8b08035 ↗
48. 10.1002/adfm.20180573710.1002/adfm.201805737 ↗
49. 10.1021/acs.nanolett.7b0018410.1021/acs.nanolett.7b00184 ↗
50. 10.1021/acsenergylett.6b0028710.1021/acsenergylett.6b00287 ↗
51. 10.1002/adfm.20090206010.1002/adfm.200902060 ↗
52. 10.1021/jp504101910.1021/jp5041019 ↗
53. 10.1039/C5TA03362D10.1039/C5TA03362D ↗
54. 10.1021/jacs.5b0025610.1021/jacs.5b00256 ↗