Cu<sub>2+1</sub>O/graphene nanosheets supported on three dimensional copper foam for sensitive and efficient non-enzymatic detection of glucose

Yang, Ling; Liu, Daoping; Cui, Guomin; Xie, Yongqi

doi:10.1039/c7ra02011b

Cited by 24 publications

(10 citation statements)

References 32 publications

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“…The results of PXRD and XPS after 1000 cycles also demonstrated that the formation of Cu 2+1 O species originated from the partial oxidation of CuCN during the OER test (Figure S36). , …”

Section: Resultsmentioning

confidence: 99%

“…The results of PXRD and XPS after 1000 cycles also demonstrated that the formation of Cu 2+1 O species originated from the partial oxidation of CuCN during the OER test (Figure S36). 58,59 Characterizations of Samples after 136 h of OER and Proposed OER Mechanism. To further reveal the reaction mechanism for water oxidation under alkaline conditions, Cu/ CuCN was characterized by XPS, PXRD, Raman, FESEM, TEM, and HRTEM investigations after 136 h of OER cycles, as depicted in Figure 5.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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The constructure of a heterostructured interface is an effective way to design highly durable and efficient water oxidation electrocatalysts. Herein, Cu/CuCN with heterointerfaces is the first synthesized case through a simple epitaxial-like growth method, displaying superior activity and stability under pH-universal media. Associated with high electron transport and transfer of the epitaxial interfacial area, the Cu/CuCN pre-catalyst is applied to deliver the oxygen evolution reaction (OER) with lower overpotentials of 250 mV (forward scan) and 380 mV (backward scan) at 10 mA cm –2 and demonstrates better intrinsic activity ( j ECSA of 1.0 mA cm –2 at 420 mV) and impressive stability (136 h) in 1.0 M KOH, which exceeds most previous catalysts. Even using a nominal voltage of 1.5 V of a AA battery can drive the overall water-splitting setup. Experiments combined with theoretical simulations further uncover the existence of CuO species at the heterointerface during basic OER, which is evidence of better OER performance with abundant active sites that accelerate the conversion kinetics.

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“…The results of PXRD and XPS after 1000 cycles also demonstrated that the formation of Cu 2+1 O species originated from the partial oxidation of CuCN during the OER test (Figure S36). , …”

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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“…The flexible SERS chips were chemically prepared by depositing hydrophobic Cu membrane on fabrics and then coating sliver on the Cu membrane through a replacement reaction. In the first step, copper was coated on fabrics with a modified chemical deposition procedure as reported [35]. Fabrics were cut into pieces with sizes of 2 cm × 2 cm, followed by fully washing with water and ethanol.…”

Section: Preparation Of Flexible Hydrophobic Ag Modified Copper Sers Chipsmentioning

confidence: 99%

Highly Sensitive and Stable Copper-Based SERS Chips Prepared by a Chemical Reduction Method

Dai

Huang

et al. 2021

Nanomaterials

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Cu chips are cheaper than Ag and Au chips for practical SERS applications. However, copper substrates generally have weak SERS enhancement effects and poor stability. In the present work, Cu-based SERS chips with high sensitivity and stability were developed by a chemical reduction method. In the preparation process, Cu NPs were densely deposited onto fabric supports. The as-prepared Cu-coated fabric was hydrophobic with fairly good SERS performance. The Cu-coated fabric was able to be used as a SERS chip to detect crystal violet, and it exhibited an enhancement factor of 2.0 × 106 and gave a limit of detection (LOD) as low as 10–8 M. The hydrophobicity of the Cu membrane on the fabric is favorable to cleaning background interference signals and promoting the stability of Cu NPs to environment oxidation. However, this Cu SERS chip was still poor in its long-term stability. The SERS intensity on the chip was decreased to 18% of the original one after it was stored in air for 60 days. A simple introduction of Ag onto the clean Cu surface was achieved by a replacement reaction to further enhance the SERS performances of the Cu chips. The Ag-modified Cu chips showed an increase of the enhancement factor to 7.6 × 106 due to the plasmonic coupling between Cu and Ag in nanoscale, and decreased the LOD of CV to 10–11 M by three orders of magnitude. Owing to the additional protection of Ag shell, the SERS intensity of the Cu-Ag chip after a two-month storing maintained 80% of the original intensity. The Cu-Ag SERS chips were also applied to detect other organics, and showing wide linearity range and low LOD values for the quantitative detection.

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“…Although CNTs are promising nanomaterials for biosensor fabrication, they are synthesized at a higher temperature, which limits the choice of electrode during growth and also makes them difficult to reproduce with similar morphology. Several other nanomaterials, such as a Cu2+1O nanocubes/graphene nanosheet hybrid on Cu foam [435], cuprous sulfide (CuS) NRs on Cu foam [436], TiO2 NRs on graphite microfiber [437], and silver oxide (Ag2O) nanowalls on a Cu substrate [438], have been directly grown and successfully used to fabricate biosensors.…”

Section: Laser Scribingmentioning

confidence: 99%

Deposition of nanomaterials: A crucial step in biosensor fabrication

Ahmad

Wolfbeis

Hahn

et al. 2018

Materials Today Communications

178

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 An easy, stable, and reproducible nanomaterial deposition/growth method is crucial for the realization of fabricated biosensor devices' performance, such as device stability, and reproducibility, as well as other sensing properties.  Key challenges for optimum deposition include stability, reproducibility, repeatability, and the ability of deposited nanomaterials to address these challenges is critiqued.

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Cu₂₊₁O/graphene nanosheets supported on three dimensional copper foam for sensitive and efficient non-enzymatic detection of glucose

Cited by 24 publications

References 32 publications

Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Highly Sensitive and Stable Copper-Based SERS Chips Prepared by a Chemical Reduction Method

Deposition of nanomaterials: A crucial step in biosensor fabrication

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Cu2+1O/graphene nanosheets supported on three dimensional copper foam for sensitive and efficient non-enzymatic detection of glucose

Cited by 24 publications

References 32 publications

Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Stable, Efficient, Copper Coordination Polymer-Derived Heterostructured Catalyst for Oxygen Evolution under pH-Universal Conditions

Highly Sensitive and Stable Copper-Based SERS Chips Prepared by a Chemical Reduction Method

Deposition of nanomaterials: A crucial step in biosensor fabrication

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Cu₂₊₁O/graphene nanosheets supported on three dimensional copper foam for sensitive and efficient non-enzymatic detection of glucose