Metal-Organic Framework Co-MOF-74-Based Host-Guest Composites for Resistive Gas Sensing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00517288" target="_blank" >RIV/61388955:_____/19:00517288 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0302598" target="_blank" >http://hdl.handle.net/11104/0302598</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.8b22002" target="_blank" >10.1021/acsami.8b22002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metal-Organic Framework Co-MOF-74-Based Host-Guest Composites for Resistive Gas Sensing

Popis výsledku v původním jazyce

Increasing demands in the field of sensing, especially for gas detection applications, require new approaches to chemical sensors. Metal organic frameworks (MOFs) can play a decisive role owing to their outstanding performances regarding gas selectivity and sensitivity. The tetrathiafulvalene (TTF)-infiltrated MOF, CoMOF-74, has been prepared following the host guest concept and evaluated in resistive gas sensing. The Co-MOF-74-TTF crystal morphology has been characterized via X-ray diffraction and scanning electron microscopy, while the successful incorporation of TTF into the MOF has been validated via X-ray photoemission spectroscopy, thermogravimetric analysis, UV/vis, infrared (IR), and Raman investigations. We demonstrate a reduced yet ample uptake of CO, in the pores of the new material by IR imaging and adsorption isotherms. The nanocomposite Co-MOF-74-TTF exhibits an increased electrical conductivity in comparison to Co-MOF-74 which can be influenced by gas adsorption from a surrounding atmosphere. This effect could be used for gas sensing.

Název v anglickém jazyce

Metal-Organic Framework Co-MOF-74-Based Host-Guest Composites for Resistive Gas Sensing

Popis výsledku anglicky

Increasing demands in the field of sensing, especially for gas detection applications, require new approaches to chemical sensors. Metal organic frameworks (MOFs) can play a decisive role owing to their outstanding performances regarding gas selectivity and sensitivity. The tetrathiafulvalene (TTF)-infiltrated MOF, CoMOF-74, has been prepared following the host guest concept and evaluated in resistive gas sensing. The Co-MOF-74-TTF crystal morphology has been characterized via X-ray diffraction and scanning electron microscopy, while the successful incorporation of TTF into the MOF has been validated via X-ray photoemission spectroscopy, thermogravimetric analysis, UV/vis, infrared (IR), and Raman investigations. We demonstrate a reduced yet ample uptake of CO, in the pores of the new material by IR imaging and adsorption isotherms. The nanocomposite Co-MOF-74-TTF exhibits an increased electrical conductivity in comparison to Co-MOF-74 which can be influenced by gas adsorption from a surrounding atmosphere. This effect could be used for gas sensing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LL1301" target="_blank" >LL1301: Od grafenových hybridních nanostruktur k ekologické elektronice</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Applied Materials and Interfaces

ISSN

1944-8244

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

14175-14181

Kód UT WoS článku

000465189000039

EID výsledku v databázi Scopus

2-s2.0-85064127909