Novel Co(OH)F/Zn(OH)F heterostructures for acetone gas sensor applications: Materials synthesis, characterization, and sensor performance evaluation

Eom, Tae-yil; Cho, Minwoo; Song, Kyeong‐Youn; Park, Joon‐Shik; Lee, Hoo-Jeong

doi:10.1016/j.snb.2022.131377

Cited by 21 publications

(3 citation statements)

References 37 publications

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“…Zinc-based materials, because of their high exciton binding energy and direct wide band gaps, have been widely used in photoelectrocatalysis, , solar batteries, gas sensors − and fluorescence detection. − Especially, ZnO, ZIF-8, and ZnTe have been used for H 2 evolution because of their nontoxicity, long-term stability, and superior optical properties. − As a special zinc-based material, zinc hydroxy fluoride (Zn(OH)F) has been used in selective catalysts, photoluminescence, photoelectronic devices, and other fields. − However, its special properties such as luminescence and photocatalytic performance have long been neglected. − Zn(OH)F has a wide band gap, which makes it difficult for photocarriers to recombine and has a good promotion effect on photocatalytic efficiency . Moreover, fluoride ions have high electronegativity and their radius is almost the same as that of hydroxide ions, which could remarkably promote the transfer of carriers at the interface of composites.…”

Section: Introductionmentioning

confidence: 99%

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Yang

Zhang

Han

et al. 2022

ACS Appl. Nano Mater.

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Photocatalytic water splitting H 2 production based on semiconductor nanoparticle heterojunctions is an attractive strategy. Various morphologies of Zn(OH)F have been widely used in photocatalytic degradation of organic matter; however, its application in photocatalytic hydrogen production has been rarely reported. Herein, two kinds of morphologies catalysts, one rodlike CdS/Zn(OH)F (CdS/ RZF) and the second flower-like heterojunction CdS nanoparticle/ Zn(OH)F (CdS NP/FZF), were prepared by the simple and mild hydrothermal method. Interestingly, CdS NP/FZF exhibited superior photocatalytic activity to CdS/RZF due to the flower-like structure of Zn(OH)F, which prevented the aggregation of CdS nanoparticles, thereby exposing more active sites. Notably, the light absorption ability of CdS nanoparticle/Ni x Zn 1−x (OH)F (CdS NP/NZF) was greatly improved, which was due to the introduction of Ni 2+ . As a result, the H 2 production rate of CdS NP/NZF (2410 μmol•g −1 •h −1 ) was increased by 2.19 times compared to that of CdS NP/FZF. This remarkable enhancement of photocatalytic H 2 -evolution activity of CdS NP/NZF was attributed to its special morphology in addition to Ni 2+ doping, which promoted the separation of photogenerated electrons and holes, as well as improved the ability of visible-light response. This work provides a family of catalysts as a promising candidate for photocatalytic hydrogen evolution.

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Section: Introductionmentioning

confidence: 99%

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Yang

Zhang

Han

et al. 2022

ACS Appl. Nano Mater.

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“…Consequently, heterostructure nanoarrays have attracted much attention because of their excellent electronic transport characteristics and good designability. 17,18 Their composition, structure, and morphology can be designed based on the needs of specic applications, so as to achieve functional characteristics that cannot be achieved by each component alone. 19,20 This provides a path for the convenient preparation of bio-H 2 S sensors with high detection accuracy and sensitivity ranges.…”

Section: Introductionmentioning

confidence: 99%

Cu₂O/Co₃O₄nanoarrays for rapid quantitative analysis of hydrogen sulfide in blood

Zhu

Sun

et al. 2023

Nanoscale Adv.

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“…There are many facile synthesis methods of CoOHF, such as hydrothermal method, , solvothermal method, electrochemical deposition, and so on, under which the morphology of CoOHF can be highly controlled. As an important Co-based composite material, CoOHF is widely used in the process of developing new materials, such as magnetic materials, sensors, and selective catalysts . In the field of lithium-ion battery anode materials, Ni and his team prepared rod-shaped CoOHF by a simple hydrothermal synthesis method for the first time, and after 50 cycles at a current density of 0.1 mA cm –2 , the capacity can reach 330 mAh g –1 .…”

Section: Introductionmentioning

confidence: 99%

Nanoneedles of Cobalt Hydroxyfluoride on N-Doped Porous Carbon as Anodes for Lithium-Ion Batteries

Zhu,

Liu,

et al. 2023

Energy Fuels

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The development of new composite materials with micro-and nanostructures and the realization of rapid transmission of lithium ions are crucial for the high-performance anode materials of lithium-ion batteries. Cobalt-based composites have received considerable attention on account of their unique physicochemical properties and good electrochemical performance. Therefore, it is of great significance to synthesize new Co-based composites and to research their electrochemical properties. In this work, nanoneedle CoOHF was successfully loaded on N-doped porous carbon (CoOHF/N−C) by facile sintering and hydrothermal method for the first time, which possessed excellent cycle stability and fast lithium-ion transport kinetics. The special porous structure in CoOHF/N−C can effectively alleviate the volume effect of CoOHF during cyclic charging and discharging, and the nanoneedle CoOHF presents a flower-like structure, which can also provide a large specific surface area, which ensures more active sites and shorter diffusion paths for rapid Li + diffusion, thus offering a larger electrode/electrolyte interface for charge transfer. Under these synergistic effects, the CoOHF/N−C anode has excellent electrochemical performance, including an admirable initial discharge capacity of 1203.7 mAh g −1 at 200 mA g −1 , a high reversible capacity of 913.3 mAh g −1 after 300 cycles, and a high Li + diffusion coefficient, ensuring improved cycling stability and rate performance. This work opens up the possibility of novel ways of designing new Co-based nanoanode materials for high-performance lithium-ion batteries.

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Novel Co(OH)F/Zn(OH)F heterostructures for acetone gas sensor applications: Materials synthesis, characterization, and sensor performance evaluation

Cited by 21 publications

References 37 publications

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Cu₂O/Co₃O₄nanoarrays for rapid quantitative analysis of hydrogen sulfide in blood

Nanoneedles of Cobalt Hydroxyfluoride on N-Doped Porous Carbon as Anodes for Lithium-Ion Batteries

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Novel Co(OH)F/Zn(OH)F heterostructures for acetone gas sensor applications: Materials synthesis, characterization, and sensor performance evaluation

Cited by 21 publications

References 37 publications

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Efficient CdS Nanoparticle/Zn(OH)F Heterojunction Catalysts for Hydrogen Evolution

Cu2O/Co3O4nanoarrays for rapid quantitative analysis of hydrogen sulfide in blood

Nanoneedles of Cobalt Hydroxyfluoride on N-Doped Porous Carbon as Anodes for Lithium-Ion Batteries

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Cu₂O/Co₃O₄nanoarrays for rapid quantitative analysis of hydrogen sulfide in blood