Flash Thermal Shock Synthesis of Heterostructured Transition Metal Dichalcogenides and Carbides in Milliseconds
Abstract
Abstract Transition metal dichalcogenides (TMDs) offer remarkable potential for next‐generation functional devices, but achieving ultrafast synthesis with precise structural and phase control under ambient conditions remains a significant challenge. Here, ultrafast photothermal annealing assisted by graphene oxide is introduced for precise phase control of TMDs forming a heterostructure. This process reaches adjustable temperatures between 1 768 and 3 162 K within 10 ms, featuring rapid kinetics, enabling the synthesis of various metastable nanomaterials in ambient air. The TMDs form directly from precursors above 1 700 K, while temperatures above 2 300 K induce carbothermic reactions, producing metastable transition metal carbides (TMCs) and core@shell heterostructures (TMC@TMD and TMC@carbon). Introducing seed materials like single metals, metal oxides, and multielement/high‐entropy alloys enables the formation of core(seed)@shell (TMD) heterostructures. The resulting composites demonstrated significantly enhanced catalytic performance in gas sensing and hydrogen production. This robust and versatile photothermal annealing method holds broad potential for designing advanced heterostructure‐engineered TMD and/or TMC composites tailored for targeted applications.
Article Details
Authors (16)
Euichul Shin
Dong‐Ha Kim
Department of Chemistry Massachusetts Institute of Technology Cambridge Massachusetts USA
Mingyu Sagong
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Jacob Choe
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Seo Hak Park
School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Jaewan Ahn
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
Jong Won Baek
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Minhyun Kim
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
Sungyoon Woo
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Yujang Cho
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
Seon‐Jin Choi
Division of Materials of Science and Engineering Hanyang University 222 Wangsimni‐ro Seongdong‐gu Seoul 04763 Republic of Korea
Sang‐Joon Kim
Department of Materials Science and Engineering Chungnam National University Daejeon 34134 Republic of Korea
Jong Min Yuk
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology 291 Daehak‐ro Yuseong‐gu Daejeon 34141 Republic of Korea
Ju Li
Sung‐Yool Choi
School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
Il‐Doo Kim
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea