Primary studyPeripheral evidenceEnergy Storage

Synthesis, Crystal Structure, and Photocatalytic Properties of a Zinc(II) Coordination Polymer Based on 3-Hydroxy-2-pyridinecarboxylic Acid

Gu X., Lv W., Hui Y. et al. · Zeitschrift fur Anorganische und Allgemeine Chemie · 2019 · 663-668

1materials
2samples
1synthesis routes
9measurements
35results
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

Complex 1 with H2O2 degrades methylene blue under UV irradiation more effectively than complex-only or H2O2-only controls.

Caveat: Application result is dye photodegradation, not electrical or electrochemical energy-storage performance.

667 · 3.4 Photocatalytic Properties · Figure 4 · Linked to 4 structured results

Phase AssignmentSupport assessment: High

Complex 1 is a monoclinic P21/n 2D zinc coordination polymer whose trinuclear subunits are bridged by carboxylate groups.

Caveat: CIF was not supplied locally, but table and SI crystallographic data are available.

665 · 3.1 Crystal Structure of Complex 1 · Figure 1 · Linked to 5 structured results

Phase AssignmentSupport assessment: Medium

The bulk product is phase-pure by PXRD comparison to the simulated pattern from single-crystal data.

Caveat: Phase purity is asserted qualitatively; no Pawley/Rietveld refinement or impurity detection limit is reported.

666 · 3.2 IR Analysis and PXRD Studies · Figure S3 · Linked to 1 structured result

Structure Property LinkSupport assessment: Medium

The compound is described as semiconducting because its diffuse-reflectance Kubelka-Munk analysis gives an optical band gap of 3.11 eV.

Caveat: The claim is based on optical spectroscopy only; direct electrical transport, carrier mobility, Seebeck coefficient and conductivity were not reported.

666 · 3.3 TG Analysis and Solid-state Diffuse-Reflection Study · Figure 3 · Linked to 2 structured results

Transport MechanismSupport assessment: Low

The authors propose a Fenton-type photocatalytic mechanism in which UV/Vis-generated electron-hole pairs interact with O2 or H2O to form active hydroxyl radicals.

Caveat: Mechanism is proposed by analogy; no radical trapping, EPR, photocurrent or electrochemical impedance data are reported.

668 · 3.4 Photocatalytic Properties · Linked to 2 structured results

Material identities

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

MaterialCompositionStructure contextSource
[Zn3(HL)6]n (complex 1)C36H24N6O18Zn3 / [Zn3(HL)6]nZn(II) ions in trinuclear subunits; Zn atoms are five- or six-coordinate · HL = 3-hydroxy-2-pyridinecarboxylate from 3-hydroxy-2-pyridinecarboxylic acid; gallic acid is present in synthesis but not coordinated2D · PristineMonoclinic P21/n 2D coordination polymer based on trinuclear Zn subunits bridged by carboxylate groups; weak C-H...O interactions link molecules into a 3D supramolecular framework.663 · Abstract

Sample register

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

Show 2 sample records
SampleForm and roleProcessing and geometrySource
Complex 1 bulk crystalline productresearch_0871__mat__mat_zn3_hl6_1Powder · Target Sample · Pristine FrameworkWashed crystalline product used for IR, PXRD, TGA, diffuse-reflectance UV/Vis and photocatalysis.664 · 2.1 Materials and Measurement; 2.4 Photocatalytic Procedure
Complex 1 single crystalresearch_0871__mat__mat_zn3_hl6_1Single Crystal · Target Sample · Pristine FrameworkColorless crystals obtained by solvothermal synthesis and washed with ethanol.664 · 2.2 Synthesis of [Zn3(HL)6]n (1)