http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Bechelany, Mikhael (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Atomic Layer Deposition of Nanostructured Materials for Energy and Environmental Applications
Marichy, Catherine,Bechelany, Mikhael,Pinna, Nicola WILEY‐VCH Verlag 2012 Advanced Materials Vol.24 No.8
<P><B>Abstract</B></P><P>Atomic layer deposition (ALD) is a thin film technology that in the past two decades rapidly developed from a niche technology to an established method. It proved to be a key technology for the surface modification and the fabrication of complex nanostructured materials. In this Progress Report, after a short introduction to ALD and its chemistry, the versatility of the technique for the fabrication of novel functional materials will be discussed. Selected examples, focused on its use for the engineering of nanostructures targeting applications in energy conversion and storage, and on environmental issues, will be discussed. Finally, the challenges that ALD is now facing in terms of materials fabrication and processing will be also tackled.</P>
-
MOF-Based Membrane Encapsulated ZnO Nanowires for Enhanced Gas Sensor Selectivity
Drobek, Martin,Kim, Jae-Hun,Bechelany, Mikhael,Vallicari, Cyril,Julbe, Anne,Kim, Sang Sub American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.13
<P>Gas sensors are of a great interest for applications including toxic or explosive gases detection in both in-house and industrial environments, air quality monitoring, medical diagnostics, or control of food/cosmetic properties. In the area of semiconductor metal oxides (SMOs)-based sensors, a lot of effort has been devoted to improve the sensing characteristics. In this work, we report on a general methodology for improving the selectivity of SMOx nanowires sensors, based on the coverage of ZnO nanowires with a thin ZIF-8 molecular sieve membrane. The optimized ZnO@ZIF-8-based nanocomposite sensor shows markedly selective response to H-2 in comparison with the pristine ZnO nanowires sensor, while showing the negligible sensing response to C7H8 and C6H6. This original MOF-membrane encapsulation strategy applied to nanowires sensor architecture pave the way for other complex 3D architectures and various types of applications requiring either gas or ion selectivity, such as biosensors, photo(catalysts), and electrodes.</P>
-
Functionalization of 3D printed ABS filters with MOF for toxic gas removal
Ismael Pellejero,Fernando Almazán,Marta Lafuente,Miguel A. Urbiztondo,Martin Drobek,Mikhael Bechelany,Anne Julbe,Luis M. Gandía 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
Acrylonitrile butadiene styrene (ABS) is one of the most extensively used polymer in 3D printingmanufacturing due to its competitive thermal and mechanical properties. Recently, a special attentionhas been devoted to novel ABS composites featuring extra functionalities e.g. in the area of VOC removal. Herein, we report on a facile protocol for the functionalization of 3D printed ABSfilters with a MOF(Metal-Organic Framework) material (ZIF-8) targeting the conception of attractive gasfilters. Theproposed synthesis strategy consists in low temperature ALD (Atomic Layer Deposition) of ZnO on theABS grid followed by the hydrothermal conversion of ZnO to ZIF-8, both steps being conducted at 60 C. Insuch way, the method enables an effective growth of ZIF-8 without altering the stability of the polymericABS support. The as-fabricated ABS/ZIF-8filters offer a promising adsorption behaviour for dimethylmethylphosphonate ( 20.4 mg of DMMP per gram of ZIF-8), thus proving their potential for toxic gascapture applications.
-
Weber, Matthieu,Kim, Jae-Hun,Lee, Jae-Hyoung,Kim, Jin-Young,Iatsunskyi, Igor,Coy, Emerson,Drobek, Martin,Julbe, Anne,Bechelany, Mikhael,Kim, Sang Sub American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.40
<P>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 of a miniaturized sensor with vapor-grown ZnO NWs, (ii) decoration of these NWs with Pd NPs by atomic layer deposition, and (iii) partial solvothermal conversion of the tuned NWs surface to ZIF-8 nanomembrane. The microstructure and composition investigations of the ZIF-8/Pd/ZnO nanostructured materials confirmed the presence of both metallic Pd NPs and uniform ZIF-8 thin membrane layer. The integration of these nanomaterials within a miniaturized sensor device enabled the assessment of their performance for H<SUB>2</SUB> detection at concentrations as low as 10 ppm in the presence of various gases such as C<SUB>6</SUB>H<SUB>6</SUB>, C<SUB>7</SUB>H<SUB>8</SUB>, C<SUB>2</SUB>H<SUB>5</SUB>OH, and CH<SUB>3</SUB>COCH<SUB>3</SUB>. Remarkably high-response signals of 3.2, 4.7, and 6.7 (<I>R</I><SUB>a</SUB>/<I>R</I><SUB>g</SUB>) have been measured for H<SUB>2</SUB> detection at only 10, 30, and 50 ppm, whereas no noticeable response toward other tested gases was detected, thus confirming the excellent H<SUB>2</SUB> selectivity obtained with such a sensor design. The results obtained showed that the performance of gas sensors toward H<SUB>2</SUB> gas can be greatly increased by both the addition of Pd NPs and the use of ZIF-8 coating, acting as a molecular sieve membrane. Furthermore, the presented strategy could be extended toward the sensing of other species by a judicious choice of both the metallic NPs and MOF materials with tuned properties for specific molecule detection, thus opening a new avenue for the preparation of highly selective sensing devices.</P> [FIG OMISSION]</BR>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
