Gas sensing properties of electrically conductive Cu(I) compounds at elevated temperatures

Wolpert, Benjamin; Wolfbeis, Otto S.; Mirsky, Vladimir M.

doi:10.1016/j.snb.2009.04.042

Cited by 9 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noteworthy that the signal could return to its initial value without remarkable change in resistance after several testing cycles, indicating a repeatable and stable characteristic (inset in Figure 4d). Accordingly, the as‐prepared hollow Cu 2‐x Te NCs exhibit enhanced CO gas‐sensing performance in comparison with their conventional bulk counterpart, which can be acribed to their large specific area (36.2650 m 2 /g, see Figure S3) 47. Meanwhile, the sensitivity of hollow Cu 2‐x Te NCs was comparable to the previous reports for detecting CO with various materials (e.g.…”

Section: Resultssupporting

confidence: 80%

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Xiao

Zeng

Yue

et al. 2012

Small

View full text Add to dashboard Cite

This paper develops a facile solution-based method to synthesize hollow Cu2-x Te nanocrystals (NCs) with tunable interior volume based on the Kirkendall effect. Transmission electron microscopy images and time-dependent absorption spectra reveal the temporal growth process from solid copper nanoparticles to hollow Cu2-x Te NCs. Furthermore, the as-prepared hollow Cu2-x Te NCs show enhanced sensitivity for the detection of carbon monoxide (CO), which is often referred to as the "silent killer". The response and recovery time of the as-prepared sensor for the detection of 100 ppm CO gas are estimated to be about 21 and 100 s, respectively, which are sufficient to render it a promising candidate for effective CO gas-sensing applications. Such enhanced performance is achieved owing to the small grain size and large specific area of the hollow nanostructures. Therefore, the obtained hollow NCs based on the Kirkendall effect may have the potential as new functional blocks for high-performance gas sensors.

show abstract

Section: Resultssupporting

confidence: 80%

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Xiao

Zeng

Yue

et al. 2012

Small

View full text Add to dashboard Cite

show abstract

“…In itself, this if of interest as CuI nanoparticles show some promise for applications in dyesensitized solar cells (Perera and Tennakone 2003) or gas sensing applications for CO and NO (Wolpert et al 2009). The process might also be useful for controlling the local copper dopant concentration, important for exploring competition between superconducting and charge density wave ground states in the material.…”

Section: Discussionmentioning

confidence: 99%

Dopant Driven Electron Beam Lithography

Kidd¹

2012

Scanning Electron Microscopy

View full text Add to dashboard Cite

“…In recent years, some pioneering research has been reported on the exploration of bulk CuX as chemiresistive gas sensors. For instance, CuBr has been used in sensing of NH 3 , while CuI was tested for detecting greenhouse gases . However, such examples are quite limited and some challenges are yet to be overcome.…”

Section: Introductionmentioning

confidence: 99%

“…However, such examples are quite limited and some challenges are yet to be overcome. Taking CuI for example, the high operational temperature, relatively low response, and selectivity compared to conventional inorganic sensors have impeded its utility as popular chemiresistors . Therefore, developing new strategies to tailor bulk CuX semiconductors to improve their chemiresistive gas sensing performance is of vital importance.…”

Section: Introductionmentioning

confidence: 99%

Confinement of 1D Chain and 2D Layered CuI Modules in K-INA-R Frameworks via Coordination Assembly: Structure Regulation and Semiconductivity Tuning

Wu,

Wang,

Liu

et al. 2023

J. Am. Chem. Soc.

View full text Add to dashboard Cite

Herein, we present a new series of CuI-based hybrid materials with tunable structures and semiconducting properties. The CuI inorganic modules can be tailored into a one-dimensional (1D) chain and two-dimensional (2D) layer and confined/stabilized in coordination frameworks of potassium isonicotinic acid (HINA) and its derivatives (HINA-R, R = OH, NO 2 , and COOH). The resulting CuI-based hybrid materials exhibit interesting semiconducting behaviors associated with the dimensionality of the inorganic module; for instance, the structures containing the 2D-CuI module demonstrate significantly enhanced photoconductivity with a maximum increase of five orders of magnitude compared to that of the structures containing the 1D-CuI module. They also represent the first CuI-bearing hybrid chemiresistive gas sensors for NO 2 with boosted sensing performance and sensitivity at multiple orders of magnitude over that of the pristine CuI. Particularly, the sensing ability of CuI-K-INA containing both 1D-and 2D-CuI modules is comparable to those of the best NO 2 chemiresistors reported thus far.

show abstract

Gas sensing properties of electrically conductive Cu(I) compounds at elevated temperatures

Cited by 9 publications

References 20 publications

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Dopant Driven Electron Beam Lithography

Confinement of 1D Chain and 2D Layered CuI Modules in K-INA-R Frameworks via Coordination Assembly: Structure Regulation and Semiconductivity Tuning

Contact Info

Product

Resources

About

Gas sensing properties of electrically conductive Cu(I) compounds at elevated temperatures

Cited by 9 publications

References 20 publications

Controlled Synthesis of Hollow Cu2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Controlled Synthesis of Hollow Cu2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Dopant Driven Electron Beam Lithography

Confinement of 1D Chain and 2D Layered CuI Modules in K-INA-R Frameworks via Coordination Assembly: Structure Regulation and Semiconductivity Tuning

Contact Info

Product

Resources

About

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties

Controlled Synthesis of Hollow Cu_2‐xTe Nanocrystals Based on the Kirkendall Effect and Their Enhanced CO Gas‐Sensing Properties