Sensors, Vol. 16, Pages 1820: A Photoactivated Gas Detector for Toluene Sensing at Room Temperature Based on New Coral-Like ZnO Nanostructure Arrays
A photoactivated gas detector operated at room temperature was microfabricated using a simple hydrothermal method. We report that the photoactivated gas detector can detect toluene using a UV illumination of 2 μW/cm2. By ultraviolet (UV) illumination, gas detectors sense toluene at room temperature without heating. A significant enhancement of detector sensitivity is achieved because of the high surface-area-to-volume ratio of the morphology of the coral-like ZnO nanorods arrays (NRAs) and the increased number of photo-induced oxygen ions under UV illumination. The corresponding sensitivity (ΔR/R0) of the detector based on coral-like ZnO NRAs is enhanced by approximately 1022% compared to that of thin-film detectors. The proposed detector greatly extends the dynamic range of detection of metal-oxide-based detectors for gas sensing applications. We report the first-ever detection of toluene with a novel coral-like NRAs gas detector at room temperature. A sensing mechanism model is also proposed to explain the sensing responses of gas detectors based on coral-like ZnO NRAs.
IJERPH, Vol. 15, Pages 1380: In Vitro and In Vivo Experimental Studies of PM2.5 on Disease Progression
International Journal of Environmental Research and Public Health doi: 10.3390/ijerph15071380
Authors:
Ching-Chang Cho
Wen-Yeh Hsieh
Chin-Hung Tsai
Cheng-Yi Chen
Hui-Fang C ... more
Energies, Vol. 11, Pages 1719: Building Retrofit with Photovoltaics: Construction and Performance of a BIPV Ventilated Façade
Energies doi: 10.3390/en11071719
Authors:
Nuria Martín-Chivelet
Juan Carlos Gutiérrez
Miguel Alonso-Abella
Faustino Chenlo
José Cuenca
Building ... more
Materials, Vol. 11, Pages 1123: Electrochemically Enhanced Drug Delivery Using Polypyrrole Films
Materials doi: 10.3390/ma11071123
Authors:
Sayed Ashfaq Ali Shah
Melike Firlak
Stuart Ryan Berrow
Nathan Ross Halcovitch
Sara Jane Baldock
Bakhtiar Muhammad Yousafzai
Rania M ... more