Primary studyCore evidenceTransport Physics

An Enzyme-Encapsulated Metal-Organic Frameworks Nanomesh Biosensor for Salivary Glucose Detection

Wang M., Wang H., Cheng J. · Advanced Materials Technologies · 2024 · 2301678

5materials
7samples
2synthesis routes
17measurements
41results
5claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: Medium

The CNT/GOx@ZIF-8 biosensor can determine salivary glucose in real samples and tracks blood glucose trends with moderate Pearson correlation.

Caveat: Human validation was small, with 21 samples from three volunteers for blood correlation.

p006 · 2.6. Practical Evaluation · Figure 6 · Linked to 3 structured results

CaveatSupport assessment: High

The article describes excellent electroconductibility from electrochemical current response, but does not report intrinsic electrical conductivity, mobility, Seebeck coefficient, thermal conductivity or thermoelectric measurements for ZIF-8 or CNT/GOx@ZIF-8.

Caveat: Electrochemical CV and amperometric evidence is application-relevant but not a direct bulk transport measurement.

p004 · 2.4. Electrochemical Characterization · Figure 4a · Linked to 2 structured results

Composite RoleSupport assessment: High

High glucose-sensing performance is attributed to the combined roles of GOx for specific catalysis, CNTs for electron conduction and ZIF-8 for stability and porous enzyme encapsulation.

Caveat: Optimisation data in SI Figure S1 support the chosen composition, but the SI does not provide separate preparation recipes for every control variant.

p004 · 2.4. Electrochemical Characterization · Figure 4b · Linked to 7 structured results

Structure Property LinkSupport assessment: High

ZIF-8 encapsulation protects GOx and improves operational/storage stability while retaining glucose access through micro- and mesopores.

Caveat: The protective mechanism is inferred from stability comparisons and pore-size arguments; no atomistic transport pathway is directly measured.

p007 · 3. Conclusion · Linked to 5 structured results

Transport MechanismSupport assessment: High

CNTs distributed through the CNT/GOx@ZIF-8 nanomesh provide conductive electron pathways from GOx active sites to the electrode, compensating for the insulating ZIF-8 component.

Caveat: The paper reports electrochemical current response rather than intrinsic conductivity, carrier mobility or four-probe transport.

p005 · 2.4. Electrochemical Characterization · Figure 4 · Linked to 4 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
CNT/GOxCNT/GOx non-MOF compositenone · none1D · CompositeCNTs cross-linked by GOx without ZIF-8 coating.p003 · 2.2. Characterization of CNT/GOx@ZIF-8 · Figure 2a
CNT/GOx@ZIF-8Browse family: ZIF-8 / Zn(mIm)₂CNT/GOx@ZIF-8 composite nanomesh; exact stoichiometry not reportedZn2+ ZIF-8 nanoparticles · 2-methylimidazole (2-MI)unknown · CompositeNecklace-like/interlaced conductive nanomesh where GOx-encapsulated ZIF-8 grows along CNTs.p002 · Introduction
CNT@ZIF-8 / CNT/ZIF-8Browse family: ZIF-8 / Zn(mIm)₂CNT/ZIF-8 composite; exact stoichiometry not reportedZn2+ ZIF-8 nanoparticles · 2-methylimidazole (2-MI)unknown · CompositeCNT-ZIF-8 composite control without GOx.p005 · Figure caption · Figure 3b
GOx@ZIF-8Browse family: ZIF-8 / Zn(mIm)₂GOx-loaded ZIF-8; exact stoichiometry not reportedZn2+ ZIF-8 nanoparticles · 2-methylimidazole (2-MI)3D · CompositeEnzyme-encapsulated ZIF-8 control without CNT conductive network.p006 · 2.4. Electrochemical Characterization · Figure 4
ZIF-8Browse family: ZIF-8 / Zn(mIm)₂Zn(2-methylimidazolate)2 framework; exact formula not reportedZn2+ from Zn(NO3)2.6H2O · 2-methylimidazole (2-MI)3D · PristineZeolitic imidazolate framework-8; simulated ZIF-8 XRD used as a reference and ZIF-8 nanoparticles coat the composite nanostructure.p002 · 2.1. Design and Working Principle of the Biosensor · Figure 1

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 7 sample records
SampleForm and roleProcessing and geometrySource
CNT/GOx electroderesearch_0629__mat__mat_cnt_goxElectrode · Composite Component · CompositeCNT and GOx control without ZIF-8.screen-printing carbon electrode (SPCE), inferred from electrode comparisonp006 · 2.4. Electrochemical Characterization · Figure 4a,b
CNT/GOx@ZIF-8 biosensor electroderesearch_0629__mat__mat_cnt_gox_zif8Electrode · Target Sample · CompositeCNT/GOx@ZIF-8 and 5% Nafion drop-cast on SPCE, dried 1 h, rinsed, and immersed in PBS before testing.screen-printing carbon electrode (SPCE)p009 · Fabrication of CNT/GOx@ZIF-8 Biosensor · Figure 1b
CNT/GOx@ZIF-8 nanomeshresearch_0629__mat__mat_cnt_gox_zif8Powder · Target Sample · CompositeWashed suspension redispersed in 5 mL ultrapure water for later use.p009 · 4. Experimental Section
CNT@ZIF-8 / CNT/ZIF-8research_0629__mat__mat_cnt_zif8Powder · Composite Component · CompositeControl composite without glucose oxidase.p005 · Figure caption · Figure 3b
GOx electrode / GOx in solutionresearch_0629__mat__mat_cnt_goxElectrode · Model System · ModelGOx-only comparator.screen-printing carbon electrode (SPCE) for electrochemical control; solution for kinetic comparisonp004 · 2.3. Catalytic Properties · Figure 3f
GOx@ZIF-8 electroderesearch_0629__mat__mat_gox_zif8Electrode · Pristine Control · Guest LoadedEnzyme-loaded ZIF-8 electrode control without CNTs.screen-printing carbon electrode (SPCE), inferred from electrode comparisonp006 · 2.4. Electrochemical Characterization · Figure 4a,b
ZIF-8research_0629__mat__mat_zif8Powder · Pristine Control · Pristine FrameworkPristine ZIF-8 control/simulated reference in XRD, pore distribution and catalytic tests.p004 · Figure caption · Figure 2d,f