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- Publisher Website: 10.1021/acsami.0c06820
- Scopus: eid_2-s2.0-85088208809
- PMID: 32538611
- WOS: WOS:000550633400054
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Article: Visible-Light-Driven, Nickel-Doped Cobalt Oxides/Hydroxides Actuators with High Stability
Title | Visible-Light-Driven, Nickel-Doped Cobalt Oxides/Hydroxides Actuators with High Stability |
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Authors | |
Keywords | visible-light-induced actuation actuator nickel hydroxide cobalt hydroxide doping |
Issue Date | 2020 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick |
Citation | ACS Applied Materials & Interfaces, 2020, v. 12 n. 27, p. 30557-30564 How to Cite? |
Abstract | Material-based, light-driven actuators have been a recent research focus for the development of untethered, miniaturized devices and microrobots. Recently introduced nickel hydroxide/oxyhydroxide (Ni(OH)2/NiOOH) and cobalt oxides/hydroxides (CoOx(OH)y) are promising light-driven actuators, as they exhibit large and rapid actuation response and are inexpensive to fabricate by fast electrodeposition. However, as their actuation is due to the volume change accompanying the light-induced desorption of intercalated water in their turbostratic structures, their actuation reduces over time as crystallization takes place slowly, which lowers the amount of water held. Here, we introduce nickel-doped cobalt oxides/hydroxides (NiCoOx(OH)y) actuator that exhibits similar turbostratic crystal structures and actuation magnitude as CoOx(OH)y, but with much slower crystallization and hence significantly more stable actuation than CoOx(OH)y or Ni(OH)2/NiOOH. The new actuator exhibits much better applicability than the Co and Ni counterparts, and the present work shows that a stabilized turbostratic structure is a key for achieving high light-driven actuation in transition-metal oxide/hydroxide actuators. |
Persistent Identifier | http://hdl.handle.net/10722/284076 |
ISSN | 2021 Impact Factor: 10.383 2020 SCImago Journal Rankings: 2.535 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Kwan, KW | - |
dc.contributor.author | Ngan, AHW | - |
dc.date.accessioned | 2020-07-20T05:55:54Z | - |
dc.date.available | 2020-07-20T05:55:54Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | ACS Applied Materials & Interfaces, 2020, v. 12 n. 27, p. 30557-30564 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10722/284076 | - |
dc.description.abstract | Material-based, light-driven actuators have been a recent research focus for the development of untethered, miniaturized devices and microrobots. Recently introduced nickel hydroxide/oxyhydroxide (Ni(OH)2/NiOOH) and cobalt oxides/hydroxides (CoOx(OH)y) are promising light-driven actuators, as they exhibit large and rapid actuation response and are inexpensive to fabricate by fast electrodeposition. However, as their actuation is due to the volume change accompanying the light-induced desorption of intercalated water in their turbostratic structures, their actuation reduces over time as crystallization takes place slowly, which lowers the amount of water held. Here, we introduce nickel-doped cobalt oxides/hydroxides (NiCoOx(OH)y) actuator that exhibits similar turbostratic crystal structures and actuation magnitude as CoOx(OH)y, but with much slower crystallization and hence significantly more stable actuation than CoOx(OH)y or Ni(OH)2/NiOOH. The new actuator exhibits much better applicability than the Co and Ni counterparts, and the present work shows that a stabilized turbostratic structure is a key for achieving high light-driven actuation in transition-metal oxide/hydroxide actuators. | - |
dc.language | eng | - |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick | - |
dc.relation.ispartof | ACS Applied Materials & Interfaces | - |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsami.0c06820# | - |
dc.subject | visible-light-induced actuation | - |
dc.subject | actuator | - |
dc.subject | nickel hydroxide | - |
dc.subject | cobalt hydroxide | - |
dc.subject | doping | - |
dc.title | Visible-Light-Driven, Nickel-Doped Cobalt Oxides/Hydroxides Actuators with High Stability | - |
dc.type | Article | - |
dc.identifier.email | Kwan, KW: kwan15@hku.hk | - |
dc.identifier.email | Ngan, AHW: hwngan@hku.hk | - |
dc.identifier.authority | Ngan, AHW=rp00225 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1021/acsami.0c06820 | - |
dc.identifier.pmid | 32538611 | - |
dc.identifier.scopus | eid_2-s2.0-85088208809 | - |
dc.identifier.hkuros | 311245 | - |
dc.identifier.volume | 12 | - |
dc.identifier.issue | 27 | - |
dc.identifier.spage | 30557 | - |
dc.identifier.epage | 30564 | - |
dc.identifier.isi | WOS:000550633400054 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1944-8244 | - |