Organic-Inorganic Hybrid Materials for Room Temperature Light-Activated Sub-ppm NO Detection

被引：14

作者：

Nasriddinov, Abulkosim ^{[1
,2
]}

Rumyantseva, Marina ^{[1
]}

Shatalova, Tatyana ^{[1
]}

Tokarev, Sergey ^{[1
,3
]}

Yaltseva, Polina ^{[1
]}

Fedorova, Olga ^{[1
,3
]}

Khmelevsky, Nikolay ^{[4
]}

Gaskov, Alexander ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Chem Dept, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Fac Mat Sci, Moscow 119991, Russia

[3] RAS, AN Nesmeyanov Inst Organoelement Cpds, Moscow 119991, Russia

[4] Moscow State Technol Univ Stankin, LISM, Moscow 127055, Russia

来源：

NANOMATERIALS | 2020年 / 10卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

organic-inorganic hybrid materials; tin dioxide; indium oxide; Ru (II) complex; nitrogen monoxide NO; semiconductor gas sensor; room temperature; visible light activation; SENSITIZED SOLAR-CELLS; NITRIC-OXIDE; NITROGEN-DIOXIDE; SNO2; ADSORPTION; IR; PHOTOCHEMISTRY; CATALYSTS; SENSORS; ZNO;

D O I：

10.3390/nano10010070

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nitric oxide (NO) is one of the main environmental pollutants and one of the biomarkers noninvasive diagnosis of respiratory diseases. Organic-inorganic hybrids based on heterocyclic Ru (II) complex and nanocrystalline semiconductor oxides SnO2 and In2O3 were studied as sensitive materials for NO detection at room temperature under periodic blue light (lambda(max) = 470 nm) illumination. The semiconductor matrixes were obtained by chemical precipitation with subsequent thermal annealing and characterized by XRD, Raman spectroscopy, and single-point BET methods. The heterocyclic Ru (II) complex was synthesized for the first time and characterized by H-1 NMR, C-13 NMR, MALDI-TOF mass spectrometry and elemental analysis. The HOMO and LUMO energies of the Ru (II) complex are calculated from cyclic voltammetry data. The thermal stability of hybrids was investigated by thermogravimetric analysis (TGA)-MS analysis. The optical properties of Ru (II) complex, nanocrystalline oxides and hybrids were studied by UV-Vis spectroscopy in transmission and diffuse reflectance modes. DRIFT spectroscopy was performed to investigate the interaction between NO and the surface of the synthesized materials. Sensor measurements demonstrate that hybrid materials are able to detect NO at room temperature in the concentration range of 0.25-4.0 ppm with the detection limit of 69-88 ppb.

引用

页数：22

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