Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor DOI Creative Commons
Subrata Maji, Jan Hynek,

Kazushi Nakada

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: May 28, 2025

Abstract Anaerobic digestors (ADs) have the potential to become a major green energy source in future sustainable society. To achieve this, effective operational parameters of reactors must be established and maintained preferably by automation. In situ monitoring control AD systems is currently challenging matter based on inconsistent feedstuff composition complexity biological processes involved, so that reactor shutdowns associated with costly downtime are common problem. Here, sensing device developed for volatile fatty acids (VFAs), key intermediates during bioreactor operation, headspaces anaerobic reactors. The compact, contains element self‐assembled molecular layer conjunction nanomechanical sensor, can used monitor VFA contents bioreactors estimating their relative headspace real time. This allows close concentrations admixture toward cost‐effective operation reducing or eliminating downtime. It represents simple solution problem real‐time monitoring, making digesters realistic alternative source.

Language: Английский

Flexible Gas Sensor Based on PANI/WO3/CuO for Room-Temperature Detection of H2S DOI Creative Commons

Dongxiang Zhang,

Yingmin Liu, Yang Wang

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(9), P. 2640 - 2640

Published: April 22, 2025

Polyaniline (PANI) is currently one of the most extensively studied conductive polymers in field flexible gas sensors. However, sensors based on pure PANI generally suffer from problems such as low sensitivity and poor stability. To address these issues, this work, a room-temperature hydrogen sulfide sensor polyaniline/tungsten oxide/copper oxide (PANI/WO3/CuO) was synthesized using situ polymerization technology. This displays response value 31.3% to 1 ppm at room temperature, with response/recovery time 353/4958 s detection limit 100 ppb. Such an excellent performance attributed high surface area large adsorption capacity ternary composite, well multi-phase interface synergistic effect.

Language: Английский

Citations

0
Electrospun (La,Ba)FeO3 Nanofibers as Materials for Highly Sensitive VOC Gas Sensors DOI Creative Commons
Vadim Platonov, N. I. Malinin,

Darya Filatova

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(9), P. 2790 - 2790

Published: April 28, 2025

In this work, we report the synthesis of perovskite-type Ba-doped LaFeO3 (La1-xBaxFeO3, x = 0.00, 0.02, 0.04, and 0.06) nanofibers (NFs) using electrospinning method. The synthesized La1-xBaxFeO3 materials have a fibrous structure with an average fiber diameter 250 nm. fibers, in turn, consist smaller crystalline particles 20-50 nm size. sensor properties were studied when detecting 20 ppm CO, CH4, methanol, acetone dry air temperature range 50-350 °C. Doping barium leads to significant increase response decrease operating volatile organic compounds (VOCs). process oxidation on surface most sensitive La0.98Ba0.02FeO3 material was situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) temperature-programmed desorption combination mass spectrometry (TPD-MS). A mechanism for signal formation is proposed.

Language: Английский

Citations

0
Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor DOI Creative Commons
Subrata Maji, Jan Hynek,

Kazushi Nakada

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: May 28, 2025

Abstract Anaerobic digestors (ADs) have the potential to become a major green energy source in future sustainable society. To achieve this, effective operational parameters of reactors must be established and maintained preferably by automation. In situ monitoring control AD systems is currently challenging matter based on inconsistent feedstuff composition complexity biological processes involved, so that reactor shutdowns associated with costly downtime are common problem. Here, sensing device developed for volatile fatty acids (VFAs), key intermediates during bioreactor operation, headspaces anaerobic reactors. The compact, contains element self‐assembled molecular layer conjunction nanomechanical sensor, can used monitor VFA contents bioreactors estimating their relative headspace real time. This allows close concentrations admixture toward cost‐effective operation reducing or eliminating downtime. It represents simple solution problem real‐time monitoring, making digesters realistic alternative source.

Language: Английский

Citations

0