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Ionothermal Syntheses and Characterization of Two Layered Copper/Silver Iodoplumbates Exhibiting Visible-Light
Lu-Lu Jiang1, Qing-Hua Zou1, Jian-Long Bai1
1Chaotic Matter Science Research Center, International Institute for Innovation, Jiangxi University of Science and Technology, Nanchang330013, P. R. China.
Inorganic Chemistry
|August 10, 2026
Summary
Researchers synthesized novel hybrid iodoplumbates using ionic liquids, avoiding toxic solvents. These materials show excellent photocurrent response, advancing 2D optoelectronic material design for energy applications.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Solid-State Chemistry
Background:
- Organic-inorganic hybrid iodoplumbates offer diverse structures and optoelectronic properties for photoelectric devices and energy conversion.
- Conventional synthesis methods often utilize hazardous organic solvents.
Purpose of the Study:
- To synthesize novel layered Pb-M (M = Cu, Ag) heterometallic iodoplumbates using an ionothermal method.
- To explore their structural, electronic, and optoelectronic properties for potential applications.
Main Methods:
- Ionothermal synthesis using iodine-containing ionic liquid as solvent and structure-directing agent.
- Structural analysis via X-ray diffraction.
- Morphological and compositional analysis using SEM and XPS.
- Theoretical calculations for electronic structure and band characteristics.
Main Results:
- Successfully synthesized two compounds: (Bmim)(P4442)CuPb6I15 (1) and (Bmim)4/3Ag2/3Pb2I6 (2).
- Compound 1 exhibits a 2D anionic layer with hexagonal channels; Compound 2 shows a zigzag layered structure with [AgI4]-based dimeric motifs.
- Both compounds demonstrated good photocurrent response and stability, with compound 1 showing superior photocurrent density compared to existing iodoplumbates.
- Heterometallic ions (Cu+, Ag+) were uniformly distributed within the crystal frameworks.
Conclusions:
- The ionothermal method using ionic liquids is effective for synthesizing functional hybrid iodoplumbates, avoiding toxic solvents.
- The synthesized materials possess promising 2D layered structures and excellent optoelectronic properties.
- This research provides new avenues for designing advanced 2D optoelectronic materials for energy conversion and photoelectric devices.
