Primary studyPeripheral evidenceSensor

A highly sensitive AgNPs/Ni3(HHTP)2 SERS substrate for the detection of food additives and pesticide residues

Yuan Y., Zhou Z., Hao X. et al. · Physica Scripta · 2024 · 105604

3materials
5samples
3synthesis routes
15measurements
55results
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: High

The flexible AgNPs/Ni3(HHTP)2 substrate enables qualitative and quantitative SERS detection of food additives and pesticide residues at low concentrations.

Caveat: Application testing is SERS-specific; Table S3 gives regulatory/safe-level context, but the SI table lists 10^-8 mol/L for thiram/thiabendazole while main text reports 10^-9 M detection.

11 · Conclusion · Linked to 16 structured results

CaveatSupport assessment: High

The paper discusses Ni3(HHTP)2 as conductive but does not report a first-hand electrical-transport or thermoelectric measurement for the synthesised samples.

Caveat: Conductivity is invoked from prior literature/background rather than measured here.

2 · Introduction

Composite RoleSupport assessment: Medium

The AgNPs/Ni3(HHTP)2 composite exhibits better SERS enhancement than AgNPs or Ni3(HHTP)2 alone due to synergistic AgNP and conductive-MOF effects.

Caveat: Control comparison is described qualitatively and supported by SI Figure S9; no quantitative control intensities were extracted from the rendered SI.

8 · SERS Studies · Figure S9 · Linked to 3 structured results

Phase AssignmentSupport assessment: High

XRD, FTIR, XPS, SEM, and EDX support successful synthesis of Ni3(HHTP)2 films composed of rod-shaped structures.

Caveat: No CIF/refinement or porosity data were reported in the provided documents.

5 · Characterization · Figure 3 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

SERS enhancement is attributed to AgNP electromagnetic/LSPR enhancement plus possible Ni3(HHTP)2-mediated charge transfer.

Caveat: Charge-transfer explanation is inferential; electrical conductivity is cited as a known property rather than measured in this work.

10 · SERS Enhancement mechanism · Figure 9 · Linked to 7 structured results

Material identities

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

MaterialCompositionStructure contextSource
silver nanoparticlesAgNPsmetallic silver nanoparticles0D · PristineCitrate-reduced silver nanoparticles, PVP-modified before monolayer-film formation.3 · Experimental section
AgNPs/Ni3(HHTP)2Browse family: Ni₃(HHTP)₂ / Ni–HHTPAgNPs/Ni3(HHTP)2Ni2+ in Ni3(HHTP)2 plus metallic Ag nanoparticles · HHTP in Ni3(HHTP)22D · CompositeComposite SERS substrate formed by loading a monolayer AgNP film on rod-shaped Ni3(HHTP)2.2 · Introduction
Ni3(HHTP)2Browse family: Ni₃(HHTP)₂ / Ni–HHTPNi3(HHTP)2Ni2+ from nickel acetate · 2,3,6,7,10,11-triphenylenehexol (HHTP)2D · PristineTwo-dimensional pi-MOF; XRD peaks assigned to (100), (200), (210), and (001) planes.2 · Introduction

Sample register

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

Show 5 sample records
SampleForm and roleProcessing and geometrySource
PVP-modified monolayer AgNP filmresearch_0877__mat__mat_agnpThin Film · Composite Component · CompositePVP-modified AgNPs assembled into dense metallic-lustre filmsilicon wafer before transfer; liquid-liquid interface during assembly · monolayer4 · Experimental section · Figure S1
flexible PDMS AgNPs/Ni3(HHTP)2 SERS substrateresearch_0877__mat__mat_agnp_ni_hhtpThin Film · Target Sample · Compositeflexible substrate stored in a vacuum dryerPDMS · PDMS film cast in 1 mm deep groove; Ni3(HHTP)2 layer approximately 1.28 um; AgNP monolayer6 · Results and discussions · Figure S6
AgNPs/Ni3(HHTP)2 SERS substrate on silicon waferresearch_0877__mat__mat_agnp_ni_hhtpThin Film · Target Sample · CompositeAgNP monolayer transferred onto Ni3(HHTP)2 and dried at 60 Csilicon wafer · Ni3(HHTP)2 layer approximately 1.28 um; AgNP monolayer4 · Experimental section
Ni3(HHTP)2 mixed with crystal violet in ethanolresearch_0877__mat__mat_ni_hhtpUnknown · Paper Level Unspecified · Guest LoadedNi3(HHTP)2 and CV mixed for UV-vis adsorption/charge-transfer assessmentethanol solution/dispersion4 · Adsorptio measurements of Ni3(HHTP)2
rod-shaped Ni3(HHTP)2 filmresearch_0877__mat__mat_ni_hhtpThin Film · Pristine Control · Pristine Frameworkblue-black film formed at solution surface, lifted and dried at 60 C overnightlifted/transferred by hydrophilic PDMS film and silicon wafer · approximately 1.28 um3 · Experimental section