Ultrasonic-Assisted Synthesis of Layered Core-Shell Ni-MOF Derivatives for Enhanced Hydrogen Sensing.

Bo Wang, Minzhe Sun, Zhenqian Cheng, Tingting Hao, Yangyang Wang, Xin Li, Hongbo Xu

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Article in Nanomaterials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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7 authors.

Bo WangSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Minzhe SunSchool of Physics, Harbin Institute of Technology, Harbin 150001, China.

Zhenqian ChengThe 49th Research Institute of China Electronics Technology Group Corporation, Harbin 150028, China.

Tingting HaoThe 49th Research Institute of China Electronics Technology Group Corporation, Harbin 150028, China.

Yangyang WangThe 49th Research Institute of China Electronics Technology Group Corporation, Harbin 150028, China.

Xin LiSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Hongbo XuSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.ORCID 0000-0001-7605-2534

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hydrogen sensing is of great significance for environmental monitoring and safety due to the low explosion limit and high flammability of hydrogen gas. In this work, layered and bulk Ni-MOF precursors are designed and pyrolyzed to obtain Ni-Layer-Pyrolysis and Ni-Bulk-Pyrolysis materials. Structural characterizations reveal that Ni-Layer-Pyrolysis inherits a layered morphology with a core-shell structure, higher graphitization degree, and more uniform active sites compared with its bulk counterpart. Electrochemical studies demonstrate that Ni-Layer-Pyrolysis exhibits lower charge-transfer resistance and higher carrier density, which facilitate efficient electron transport. Gas-sensing tests show that the Ni-Layer-Pyrolysis sensor achieves a low detection limit of 100 ppm, a sensitivity of 6.24 at 8000 ppm H

Indexed as

core–shell structuregas-sensing performancehydrogen sensorMOF-derived materials

Identifiers

PMID42506492

DOI10.3390/nano16140858

PMCPMC13415105

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