Co-PBA MOF-derived hierarchical hollow Co3O4@NiO microcubes functionalized with Pt for superior H2S sensing

Wang, Xi; Lu, Jingyuan; Han, Wenjiang; Yang, Jiaqi; Jiang, Bin; Sun, Yanfeng; Zhang, Hong; Lu, Geyu

doi:10.1016/j.snb.2021.130028

Cited by 46 publications

(7 citation statements)

References 72 publications

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“…Pt-based materials, as well known, are considered as the most active electrocatalysts for oxygen reduction. However, they are limitedly employed because of their scarcity and high cost. , Therefore, the transition-metal-containing nitrogen-doped carbon materials (M-N/Cs) are widely welcomed and show attractive ORR activity due to their large surface area, high electrical conductivity, and plentiful active sites. , The nitrogen-doped carbon materials encapsulated with metallic particles are well known for their high electrochemical activity and are effective oxygen reduction reaction (ORR) catalysts featuring a high surface area, rich M-N-C sites, and excellent electrochemical conductivity. , Therefore, they have been applied to numerous electrochemical fields like the production of oxidation catalysts and lithium ion batteries as well as electrochemical detection and gas sensing . In recent years, Co particles combined with nitrogen-doped carbon have been presented continually in diverse morphologies and structures.…”

Section: Introductionmentioning

confidence: 99%

“…46,47 Therefore, they have been applied to numerous electrochemical fields like the production of oxidation catalysts 48 and lithium ion batteries 49 as well as electrochemical detection 50 and gas sensing. 51 In recent years, Co particles combined with nitrogen-doped carbon have been presented continually in diverse morphologies and structures. Their extraordinary catalytic abilities enable them to be applied in the oxygen reduction process.…”

Section: ■ Introductionmentioning

confidence: 99%

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Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Yin

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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As one kind of potential electrolyte material, ionic liquids (ILs) have been widely applied in miscellaneous electrochemistry fields because of their good stability, wide electrochemical window, and nonevaporation at room temperature. Even so, limitations such as low conductivity and poor electrochemical performance still remain when they serve as electrolytes for sensors. Herein, the Co-N/C microcube electrochemical catalyst with N-doped carbon confined Co particles was fabricated via precipitation and carbonization methods. The Co-N/C microcube possesses a rich surface area, internal voids, and good electrochemical activity that are conducive to the catalytic performance of oxygen reduction in ionic liquid electrolytes. Co-N/C was mixed with the pure ionic liquid 1-butyl-1methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ([C 4 mpyrr]-[TFSI]) to form the composite electrolyte Co-N/C/[C 4 mpyrr][TFSI], and the sensing performance of Co-N/C/[C 4 mpyrr][TFSI] was visibly enhanced compared with [C 4 mpyrr][TFSI]. Noticeably, the optimized composite electrolyte Co-N/C-700/[C 4 mpyrr][TFSI] exhibited excellent oxygen concentration detecting abilities with a sensitivity of 0.1545 μA/[% O 2 ] and a linear correlation of 0.9991 between response current and O 2 concentration in cyclic voltammetry. Meanwhile, chronoamperometry ensured the responsiveness in a wide range of O 2 concentrations from 0 to 100%. This work paves a new way for promoting the oxygen sensing performance including sensitivity, responsibility, and stability of ionic liquid electrolytes by the addition of Co-N/C-700.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Yin

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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“…Cubic nanostructures have gained interest due to their unique properties that arises from the exposing well defined crystal Figure 1 planes and their advantages in designing multifunctional devices [1][2][3][4][5][6][7]. The performance of materials with respect to its physical and chemical nature widely depends on their composition, crystal phase and surface properties that has relation to the particle shape and grain size.…”

Section: Introductionmentioning

confidence: 99%

Review on Energy Storage and Sensor Applications of Microcube Structure Materials

Suresh¹,

Kesherwani²,

Brindha³

et al. 2022

Act Scie Micro

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Microcube structure materials (MSM) have currently gained attention due to its high surface area, high porosity and other unique surface properties that are certain requirements for materials used in energy storage devices and sensor technology. The hydrothermal/solvothermal approach proved to be effective to synthesize microcube structure materials (MSM) with good surface properties. This review discusses the various preparation methods of microcube structure materials (MSM) and its applications in energy storage devices and sensor applications.

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“…However, the poor selectivity of MOFs to specific gases in practical applications had not been effectively solved. To further improve the selectivity of reduction gases, some studies had performed in‐depth research on heteroatom doping, operating temperature, tuning morphology, and forming p‐n composites 28‐32 . Among these studies, forming p‐n heterojunctions using composite materials was the most effective method of improving the selectivity and high sensitivity of MOS because of the synergic effects at the interface 33 …”

Section: Introductionmentioning

confidence: 99%

“…To further improve the selectivity of reduction gases, some studies had performed indepth research on heteroatom doping, operating temperature, tuning morphology, and forming p-n composites. [28][29][30][31][32] Among these studies, forming p-n heterojunctions using composite materials was the most effective method of improving the selectivity and high sensitivity of MOS because of the synergic effects at the interface. 33 Prussian blue (PB, Fe 4 [Fe(CN) 6 ] 3 ) is one of the MOFs with wide application prospects.…”

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confidence: 99%

Adjustable p‐n transition behavior based on MoO ₃ ‐decorated hollow α‐Fe ₂ O ₃ for highly hydrogen‐selective sensors

Kang

et al. 2022

Intl J of Energy Research

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Hydrogen sensing is very important in terms of its explosive and flammable effects on human health and industrial production. However, achieving trace level detection of H 2 with high selectivity, fast response, and good sensitivity at high temperatures remains a challenge. In this work, MoO 3 -decorated threedimensional hollow α-Fe 2 O 3 nanoboxes were obtained using a simple wetchemical method, which evolved from Prussian blue as a template. Phase and structure analyses confirmed that MoO 3 was successfully scattered on the α-Fe 2 O 3 nanoboxes surface. The gas sensor fabricated using the MoO 3 / α-Fe 2 O 3 -1 hollow nanoboxes shows exclusive H 2 sensing properties with ntype and p-type sensing response to CO, together with a fast response/recovery time at 300 C. The abnormal sensing characteristic is associated with the change in the potential barrier height due to the heterojunction-structure formation of MoO 3 and α-Fe 2 O 3 . This work provides a general approach for tuning the sensing selectivity of gas sensors via the modulation of potential barrier heights in p-n heterojunctions.

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Co-PBA MOF-derived hierarchical hollow Co3O4@NiO microcubes functionalized with Pt for superior H2S sensing

Cited by 46 publications

References 72 publications

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Review on Energy Storage and Sensor Applications of Microcube Structure Materials

Adjustable p‐n transition behavior based on MoO ₃ ‐decorated hollow α‐Fe ₂ O ₃ for highly hydrogen‐selective sensors

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Co-PBA MOF-derived hierarchical hollow Co3O4@NiO microcubes functionalized with Pt for superior H2S sensing

Cited by 46 publications

References 72 publications

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

Review on Energy Storage and Sensor Applications of Microcube Structure Materials

Adjustable p‐n transition behavior based on MoO 3 ‐decorated hollow α‐Fe 2 O 3 for highly hydrogen‐selective sensors

Contact Info

Product

Resources

About

Adjustable p‐n transition behavior based on MoO ₃ ‐decorated hollow α‐Fe ₂ O ₃ for highly hydrogen‐selective sensors