Enhanced non-enzymatic glucose sensing of Cu–BTC-derived porous copper@carbon agglomerate

Gong, Qianyi; Sun, Liping; Wu, Zhouling; Huo, Li-Hua; Zhao, Hui

doi:10.1007/s10853-018-2078-x

Cited by 19 publications

(9 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SEM is a technique used to investigate the morphology and conformational changes in surfaces, available for the observation and analysis of microstructural characteristics of solid materials, providing very fast information on the morphology and identification of chemical elements in the sample. Another important characteristic of SEM is the three‐dimensional appearance of the sample images, a direct result of the large depth of field; [21] in the MOF image ( Figure 6 A ), it was observed that the crystal provides a smooth‐surfaced octahedral morphology, as reported in the literature [23,67,68] …”

Section: Resultssupporting

confidence: 69%

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Carvalho

Araújo

Silva

et al. 2022

Chemistry & Biodiversity

View full text Add to dashboard Cite

Biosensors are small devices known for their selectivity, high specificity and sensitivity to the respective analyte, at low concentrations. We developed an electrochemical biosensor using the crystalline polymer MOF-[Cu 3 (BTC) 2 (H 2 O) 2 ] n to characterize Cratylia mollis seed lectin (Cramoll) and its interaction with free carbohydrate (glucose) and carbohydrates on the surface of rabbit erythrocytes. The electrochemical potentials presented by the exponential curves that vary from 96 to 142 mV in relation to concentrations of 10 to 20 mM of glucose are decisive for the use of the system containing gold electrode/MOF/Cramoll for the characterization of biological models due to its high sensitivity. As well as the kinetic behavior presented in the cyclic voltammograms, with a cathodic current response of 0.000 3 A for a glucose concentration of 15 mM. These results were due to the high specificity of Cramoll under these conditions, promoting stability of surface charges at the Cramoll/electrode interface. This phenomenon facilitates the monitoring of the interaction with free glucose present in the electrolyte medium by potentiometric and amperometric methods and with carbohydrates present on the surface of rabbit erythrocytes through the potentiometric method. Through scanning electron microscopy (SEM) it was possible to observe Cramoll immobilized on the MOF surface, proving the specificity of the ligand (glucose-lectin) through the morphological lectin changes in this process. This electrochemical model, Cramoll/ MOF biosensor, is effective for evaluating free lectin/carbohydrate or in the erythrocyte membrane.

show abstract

Section: Resultssupporting

confidence: 69%

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Carvalho

Araújo

Silva

et al. 2022

Chemistry & Biodiversity

View full text Add to dashboard Cite

show abstract

“…When the calcination temperature was increased further, the Cu NP size was almost unchanged, at approximately 32 nm. This indicates that the carbon layer generated from the organic ligands in Cu‐BTC limits Cu NP growth; this is consistent with previous reports 34 …”

Section: Resultssupporting

confidence: 93%

“…This indicates that the carbon layer generated from the organic ligands in Cu-BTC limits Cu NP growth; this is consistent with previous reports. 34 The diffraction patterns of Cu/CuO x @C-500 and Cu/CuO x @C-600 contained a Cu 2 O diffraction peak at ∼36.9°(Fig. 1 of the catalysts calcined at lower temperatures.…”

Section: Catalyst Characterizationmentioning

confidence: 95%

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Wang

Suo

et al. 2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Background Catalytic transfer hydrogenation has been increasingly employed as an effective and safe method for biomass upgrading; however, relying on biomass‐derived formic acid (FA) as hydrogen source has rarely been studied, especially in the production of furfuryl alcohol (FOL) from biomass‐derived furfural (FF) via selective hydrogenation, which is challenging due to diverse unsaturated groups. Herein, in situ encapsulation and stabilization of Cu/CuOx in a porous carbon matrix (Cu/CuOx@C) was reported for the first time and applied in the hydrogenation of FF to FOL with FA. Results Various analytical techniques were used to characterize the effect of pyrolysis temperature on Cu/CuOx@C, since the temperature can be adjusted to control the reduction of the catalyst to give different Cu0/Cun+ ratios. The optimal catalyst Cu/CuOx@C‐450 gave a 99.1% FF conversion and 98% FOL selectivity under suitable reaction conditions, exhibiting excellent activity that was even better than those of noble metal catalysts. Further, density functional theory calculations were used to reveal the effect of Cu species on FA decomposition and final catalytic performance. Conclusion The catalytic activity of Cu/CuOx@C was influenced by the pyrolysis temperature of the catalyst precursor, and its good performance was mainly attributed to a high dispersion of accessible catalytic Cu/CuOx nanoparticles on the porous carbon and to an appropriate Cu0/Cun+ ratio. © 2022 Society of Chemical Industry (SCI).

show abstract

“…We have chosen this Cu-based MOF as (i) Cu is associated with high selectivity to butenes in 1,3-butadiene hydrogenation, even though it offers a low activity with limited catalytic lifetime, − and (ii) CuBTC is one of the most studied MOFs with relatively low cost and ease of synthesis . Although there are a few studies using CuBTC as a catalyst precursor, − there is still a lack of understanding of the relationships between the pyrolysis conditions and the catalytic performance for partial hydrogenation of 1,3-butadiene. Aiming at elucidating these relationships, we synthesized a family of carbon-embedded copper catalysts by pyrolyzing CuBTC at different temperatures, characterized the resulting structures in deep detail, and measured their catalytic performance on partial hydrogenation of 1,3-butadiene.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis Temperature Tunes the Catalytic Properties of CuBTC-Derived Carbon-Embedded Copper Catalysts for Partial Hydrogenation

Jalal

Zhao

Uzun

2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A family of carbon-embedded copper catalysts was synthesized by pyrolyzing copper benzene-1,3,5-tricarboxylate (Cu-BTC) at various temperatures ranging from 400 to 900 °C. Characterization of catalysts demonstrated that the density of defect sites on the carbon support increases with an increase in the pyrolysis temperature leading to an increase in the electron density on the copper sites. Catalytic performance tests on 1,3-butadiene hydrogenation showed that the performance becomes more stable as the pyrolysis temperature increases above 800 °C such that the catalyst prepared by pyrolysis at 900 °C provided a stable performance for more than 12 h, while the one prepared at 400 °C was deactivating by >25%. Data further demonstrated a strong dependence of the turnover frequencies to the defect site density on the carbonaceous layer. These results present a versatile approach for preparing carbon-embedded copper catalysts with tunable electronic structure and consequent catalytic properties.

show abstract

Enhanced non-enzymatic glucose sensing of Cu–BTC-derived porous copper@carbon agglomerate

Cited by 19 publications

References 52 publications

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Pyrolysis Temperature Tunes the Catalytic Properties of CuBTC-Derived Carbon-Embedded Copper Catalysts for Partial Hydrogenation

Contact Info

Product

Resources

About

Enhanced non-enzymatic glucose sensing of Cu–BTC-derived porous copper@carbon agglomerate

Cited by 19 publications

References 52 publications

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Biosensor Characterization from Cratylia mollis Seed Lectin (Cramoll)‐MOF and Specific Carbohydrate Interactions in an Electrochemical Model

Cu/CuOx@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Pyrolysis Temperature Tunes the Catalytic Properties of CuBTC-Derived Carbon-Embedded Copper Catalysts for Partial Hydrogenation

Contact Info

Product

Resources

About

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid