Hanyang University · Engineering
김상섭 교수의 연구실은 나노소재 기반의 고감도 및 고선택성 센서 개발에 주력하고 있습니다. 특히 산화아연 나노와이어, 티타니아- zinc oxide 코어-쉘 나노섬유, 그리고 MOF 및 BN 코ating을 활용한 전기화학적 센서를 중심으로 연구를 진행하고 있습니다. 원자층증착(atomic layer deposition) 기반의 정밀한 나노구조 제어 기술을 바탕으로, 가스 센서의 민감도와 선택성을 극대화하는 데 초점을 맞추고 있습니다. 이는 환경 모니터링 및 안전 감시 분야에서의 실용적 응용 가능성을 높이고 있습니다.
Figures are computed from collected data and may differ slightly.
We fabricated TiO 2 –ZnO core‐shell nanofibers via a novel two‐step process. In the first step, the TiO 2 core nanofibers were synthesized by electrospinning. Subsequently, the ZnO shell layers were grown in a controlled manner using atomic layer deposition. The methodology proposed in this work is expected to be one of most suitable methods for preparing various kinds of oxide core‐shell nanofibers or nanowires. We investigated the O 2 sensing properties of the synthesized core‐shell nanofibers
Herein, we report the fabrication of hydrogen gas sensors with enhanced sensitivity and excellent selectivity. The sensor device is based on the strategic combination of ZnO nanowires (NWs) decorated with palladium nanoparticles (Pd NPs) and a molecular sieve metal-organic framework (MOF) nanomembrane (ZIF-8). The Pd NPs permit the sensors to reach maximal signal responses, whereas the ZIF-8 overcoat enables for an excellent selectivity. Three steps were employed for the fabrication: (i) coating
High selectivity and sensitivity were measured using a novel type of sensor device, based on ZnO nanowires (NWs) coated with a thin layer of boron nitride (BN) decorated with palladium nanoparticles (NPs).
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