Review—Recent Advances and Challenges of Conducting Polymer-Metal Nanocomposites for the Detection of Industrial Waste Gases

Abstract

Due to global industrialization, monitoring the number of gases and volatile compounds in the environment greatly affects sustainable human development. Since the 1970s, gas sensors have been used to find harmful gases and gas leaks, as well as to measure humidity and the composition of the atmosphere. Designing small, portable gas/vapor sensors with fast response, reversibility, selectivity, and sensitivity has been difficult. In a similar way, advances in nanotechnology have led scientists to make nanosensors. The development of sensors from traditional semiconductors, solid electrolytes, insulators, metals, etc. However, advances in sensor technology based on conducting polymers have opened up a new way of sensing by making it possible to find chemical/water vapors and industrial waste gases even in complex environments. On the other hand, metal-based sensors were found to be good at detecting industrial waste gases. This review summarizes the work on conducting polymers and metal-based sensors for detecting ammonia, alcohol, chloroform, humidity, industrial waste gases, and other things. The shortcomings and future improvements in the sensing performance of conducting polymer sensors are discussed additionally in this literature review.

A bio-inspired colorimetric sensor based on ethylene glycol – non-close-packed photonic crystals for visual monitoring of ammonia

“…10,11 Therefore, it is necessary to detect ammonia in the air, especially in chemical enterprises and farms. At present, electrochemical sensors based on conductive polymers and solid-state electrolytes have been developed rapidly in the gas sensing field, [12][13][14][15][16] which have the advantages of high sensitivity, miniaturization, device integration, and networking functions. However, the selectivity of the electrochemical sensors is a great challenge, and it is necessary to develop a highly selective sensor for the specific detection of ammonia.…”

Impacts of Low Energy Argon Beam on Enhancing the Surface Wettability and Electrical Performance of CA/PANI Films

“…7 The biopolymer cellulose with exceptional characteristics is created when cellulose is acetylated to form cellulose acetate. 8 Because of its biodegradability, cellulose acetate is an eco-friendly substance, which is one of its notable properties. 9 Cellulose acetate has sustainability features make it a versatile material that finds usage in coatings, adhesives, and the creation of thin films.…”