Rahman, M.M., et al., Hydrothermally prepared Ag2O/CuO nanomaterial for an efficient chemical sensor development for environmental remediation. Environmental nanotechnology, monitoring & management, 2018. 10: p. 1-9.
Google Scholar

Sasmal, M., S. Majumder, and T.K. Bhattacharyya, Fabrication of BSA-MoS 2 Bio-Composite Electronic Devices for Low-Power and Fast-Response Chemical Sensor. IEEE Sensors Journal, 2018. 18(20): p. 8223-8229.
Google Scholar

Rasyied, A.R.Z., et al., The Potential Development of Oxygen Optical Fibre Gas Sensor for Automotive Industry. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 2018. 10(1-3): p. 1-4.
Google Scholar

Paolesse, R., et al., Porphyrinoids for chemical sensor applications. Chemical Reviews, 2017. 117(4): p. 2517-2583.
Google Scholar

Cheng, C.Y., et al., Detection of Cigarette Smoke Using a Surface-Acoustic-Wave Gas Sensor with Non-Polymer-Based Oxidized Hollow Mesoporous Carbon Nanospheres. Micromachines, 2019. 10(4): p. 276.
Google Scholar

Xu, R., et al., Global ammonia emissions from synthetic nitrogen fertilizer applications in agricultural systems: Empirical and process‐based estimates and uncertainty. Global change biology, 2019. 25(1): p. 314-326.
Google Scholar

Soliman, M. and A. Eldyasti, Ammonia-Oxidizing Bacteria (AOB): opportunities and applications—a review. Reviews in Environmental Science and Bio/Technology, 2018. 17(2): p. 285-321.
Google Scholar

Cha, J., et al., Ammonia as an efficient COX-free hydrogen carrier: Fundamentals and feasibility analyses for fuel cell applications. Applied energy, 2018. 224: p. 194-204.
Google Scholar

Rouwenhorst, K.H.R. and L. Lefferts, Feasibility study of plasma-catalytic ammonia synthesis for energy storage applications. Catalysts, 2020. 10(9): p. 999.
Google Scholar

Intelligence, M. Ammonia Market - Growth, Trends, and Forecast (2020 - 2025). 2020; Available from: https://www.mordorintelligence.com/industry-reports/ammonia-market.
Google Scholar

Giddey, S.P.S.B.S., S.P.S. Badwal, and A. Kulkarni, Review of electrochemical ammonia production technologies and materials. International Journal of Hydrogen Energy, 2013. 38(34): p. 14576-14594.
Google Scholar

Comotti, M. and S. Frigo, Hydrogen generation system for ammonia–hydrogen fuelled internal combustion engines. International Journal of Hydrogen Energy, 2015. 40(33): p. 10673-10686.
Google Scholar

Mani, G.K. and J.B.B. Rayappan, A highly selective room temperature ammonia sensor using spray deposited zinc oxide thin film. Sensors and Actuators B: Chemical, 2013. 183: p. 459-466.
Google Scholar

(DOSH), D.o.O.S.a.H.M., Guideline on Safe Management of Ammonia Refrigeration System, D.o.O.S.a.H.M. (DOSH), Editor. 2020.
Google Scholar

Risby, T.H. and S.F. Solga. Current status of clinical breath analysis. Applied Physics B 2006 [cited 85 2-3]; 421-426].
Google Scholar

Timmer, B., W. Olthuis, and A. Van Den Berg, Ammonia sensors and their applications—a review. Sensors and Actuators B: Chemical, 2005. 107(2): p. 666-677.
Google Scholar

Kodu, M., et al., Graphene functionalised by laser-ablated V2O5 for a highly sensitive NH3 sensor. Beilstein journal of nanotechnology, 2017. 8(1): p. 571-578.
Google Scholar

Qin, Y., B. Zhang, and Z. Zhang, Combination of PPy with three-dimensional rGO to construct bioinspired nanocomposite for NH3-sensing enhancement. Organic Electronics, 2019. 70: p. 240-245.
Google Scholar

Bai, S., et al., Healable, transparent, room‐temperature electronic sensors based on carbon nanotube network‐coated polyelectrolyte multilayers. Small, 2015. 11(43): p. 5807-5813.
Google Scholar

Chandrasekar, M., et al., Inorganic Nanofillers-Based Thermoplastic and Thermosetting Composites, in Lightweight Polymer Composite Structures. 2020, CRC Press. p. 309-330.
Google Scholar

Janudin, N., et al. Carbon nanofibers functionalized with amide group for ammonia gas detection. in AIP Conference Proceedings. 2019. AIP Publishing LLC.
Google Scholar

Janudin, N., et al., Carbon nanotubes-based gas sensor in detection of methane gas at room temperature. ZULFAQAR International Journal of Defence Science, Engineering & Technology, 2018. 1(2).
Google Scholar

Janudin, N., et al., Low cost and room temperature methane detection using multi walled-carbon nanotubes functionalized with octadecanol. ZULFAQAR International Journal of Defence Science, Engineering & Technology, 2018. 1(2).
Google Scholar

Janudin, N., et al., Effect of functionalized carbon nanotubes in the detection of benzene at room temperature. Journal of Nanotechnology, 2018. 2018.
Google Scholar

Mahajan, C., P. Chaudhari, and S. Mishra, RGO–MWCNT–ZnO based polypyrrole nanocomposite for ammonia gas sensing. Journal of Materials Science: Materials in Electronics, 2018. 29(10): p. 8039-8048.
Google Scholar

Peng, N. and Q. Zhang, Sensing mechanisms of carbon nanotube based NH3 gas detectors, in Carbon Nanotubes. 2010, IntechOpen.
Google Scholar

Choi, S.J., et al., Selective detection of acetone and hydrogen sulfide for the diagnosis of diabetes and halitosis using SnO2 nanofibers functionalized with reduced graphene oxide nanosheets. ACS applied materials & interfaces, 2014. 6(4): p. 2588-2597.
Google Scholar

Sireesha, M., et al., A review on carbon nanotubes in biosensor devices and their applications in medicine. Nanocomposites, 2018. 4(2): p. 36-57.
Google Scholar

He, L., et al., Gas sensors for ammonia detection based on polyaniline-coated multi-wall carbon nanotubes. Materials Science and Engineering: B, 2009. 163(2): p. 76-81.
Google Scholar

Sharma, A.K., et al., CNTs based improved chlorine sensor from non-covalently anchored multi-walled carbon nanotubes with hexa-decafluorinated cobalt phthalocyanines. RSC advances, 2017. 7(78): p. 49675-49683.
Google Scholar

Huang, L., et al., A novel paper-based flexible ammonia gas sensor via silver and SWNT-PABS inkjet printing. Sensors and Actuators B: Chemical, 2014. 197: p. 308-313.
Google Scholar

Sharma, S., et al., MWCNT-conducting polymer composite based ammonia gas sensors: A new approach for complete recovery process. Sensors and Actuators B: Chemical, 2014. 194: p. 213-219.
Google Scholar

Dai, H., et al., Chemiresistive humidity sensor based on chitosan/zinc oxide/single-walled carbon nanotube composite film. Sensors and Actuators B: Chemical, 2019. 283: p. 786-792.
Google Scholar

Qiu, A., et al., A path beyond metal and silicon: polymer/nanomaterial composites for stretchable strain sensors. Advanced Functional Materials, 2019. 29(17): p. 1806306.
Google Scholar

Miller, D.R., S.A. Akbar, and P.A. Morris, Nanoscale metal oxide-based heterojunctions for gas sensing: a review. Sensors and Actuators B: Chemical, 2014. 204: p. 250-272.
Google Scholar

Ahuja, T. and D. Kumar, Recent progress in the development of nano-structured conducting polymers/nanocomposites for sensor applications. Sensors and Actuators B: Chemical, 2009. 136(1): p. 275-286.
Google Scholar

Baharuddin, A.A., et al., Advances in chemiresistive sensors for acetone gas detection. Materials Science in Semiconductor Processing, 2019. 103: p. 104616.
Google Scholar

Hou, L., et al., CO gas sensors based on p-type CuO nanotubes and CuO nanocubes: Morphology and surface structure effects on the sensing performance. Talanta, 2018. 188: p. 41-49.
Google Scholar

Jaisutti, R., et al., Ultrasensitive room-temperature operable gas sensors using p-type Na: ZnO nanoflowers for diabetes detection. ACS applied materials & interfaces, 2017. 9(10): p. 8796-8804.
Google Scholar

Husain, A., S. Ahmad, and F. Mohammad, Electrical conductivity and ammonia sensing studies on polythiophene/MWCNTs nanocomposites. Materialia, 2020. 14: p. 100868.
Google Scholar

Bak, S.Y., et al., Sensitivity Improvement of Urchin-Like ZnO Nanostructures Using Two-Dimensional Electron Gas in MgZnO/ZnO. Sensors, 2019. 19(23): p. 5195.
Google Scholar

Bindra, P. and A. Hazra, Selective detection of organic vapors using TiO2 nanotubes based single sensor at room temperature. Sensors and Actuators B: Chemical, 2019. 290: p. 684-690.
Google Scholar

Paoletti, C., et al., Room temperature amine sensors enabled by sidewall functionalization of single-walled carbon nanotubes. RSC advances, 2018. 8(10): p. 5578-5585.
Google Scholar

Xie, L., et al., Sol-gel synthesis of TiO2 with p-type response to hydrogen gas at elevated temperature. Frontiers in Materials, 2019. 6: p. 96.
Google Scholar

Govindhan, M., B. Sidhureddy, and A. Chen, High-Temperature Hydrogen Gas Sensor Based on Three-Dimensional Hierarchical-Nanostructured Nickel–Cobalt Oxide. ACS Applied Nano Materials, 2018. 1(11): p. 6005-6014.
Google Scholar

Alshammari, A.S., et al., Inkjet printing of polymer functionalized CNT gas sensor with enhanced sensing properties. Materials Letters, 2017. 189: p. 299-302.
Google Scholar

Zhang, J., et al., ZnO hollow spheres: preparation, characterization, and gas sensing properties. Sensors and Actuators B: Chemical, 2009. 139(2): p. 411-417.
Google Scholar

Thanihaichelvan, T., et al., Highly Sensitive and Selective Ethanol Sensor Based on ZnO Nanorod on SnO2 Thin Film Fabricated by Spray Pyrolysis. Frontiers in Materials, 2019. 6: p. 122.
Google Scholar

Espid, E., B. Adeli, and F. Taghipour, Enhanced gas sensing performance of photo-activated, Pt-decorated, single-crystal ZnO nanowires. Journal of the Electrochemical Society, 2019. 166(5): p. H3223.
Google Scholar

Zhang, M., H. Chen, and H. Wang, Improved sensing properties of CO2 gas sensor based on Li3PO4-Li2SiO3 thin film compared with Li3PO4. Journal of The Electrochemical Society, 2018. 165(5): p. B167.
Google Scholar

Li, S., et al., The room temperature gas sensor based on Polyaniline@ flower-like WO3 nanocomposites and flexible PET substrate for NH3 detection. Sensors and Actuators B: Chemical, 2018. 259: p. 505-513.
Google Scholar

Wang, X.F., et al., Prussian Blue analogue derived porous NiFe2O4 nanocubes for low-concentration acetone sensing at low working temperature. Chemical Engineering Journal, 2018. 338: p. 504-512.
Google Scholar

Renganathan, B., et al., Nanocrystalline ZnO coated fiber optic sensor for ammonia gas detection. optics & laser technology, 2011. 43(8): p. 1398-1404.
Google Scholar

Chatterjee, B. and A. Bandyopadhyay, Development of zinc oxide sensors for detecting ammonia gas in the ambient air: A critical short review. Environmental Quality Management, 2016. 26(1): p. 89-105.
Google Scholar

Wang, C., et al., Metal oxide gas sensors: sensitivity and influencing factors. sensors, 2010. 10(3): p. 2088-2106.
Google Scholar

Arafat, M.M., et al., Gas sensors based on one dimensional nanostructured metal-oxides: a review. Sensors, 2012. 12(6): p. 7207-7258.
Google Scholar

Rambu, A.P., et al., Study on Ni-doped ZnO films as gas sensors. Applied Surface Science, 2013. 280: p. 598-604.
Google Scholar

Chang, Y.W., et al., Electrically refreshable carbon-nanotube-based gas sensors. Nanotechnology, 2007. 18(43): p. 435504.
Google Scholar

Li, Y., et al., A composite of polyelectrolyte-grafted multi-walled carbon nanotubes and in situ polymerized polyaniline for the detection of low concentration triethylamine vapor. Nanotechnology, 2007. 19(1): p. 015503.
Google Scholar

Hunter, G.W., et al., Editors’ choice—critical review—a critical review of solid state gas sensors. Journal of The Electrochemical Society, 2020. 167(3): p. 037570.
Google Scholar

Bhati, V.S., M. Hojamberdiev, and M. Kumar, Enhanced sensing performance of ZnO nanostructures-based gas sensors: A review. Energy Reports, 2020. 6: p. 46-62.
Google Scholar

Chimowa, G., et al., Improving methane gas sensing properties of multi-walled carbon nanotubes by vanadium oxide filling. Sensors and Actuators B: Chemical, 2017. 247: p. 11-18.
Google Scholar

Nguyen, D.M. and Q.B. Bui, Three-dimensional mesoporous hierarchical carbon nanotubes/nickel foam-supported gold nanoparticles as a free-standing sensor for sensitive hydrazine detection. Journal of Electroanalytical Chemistry, 2019. 832: p. 444-452.
Google Scholar

Slobodian, P., et al., Analysis of sensing properties of thermoelectric vapor sensor made of carbon nanotubes/ethylene-octene copolymer composites. Carbon, 2016. 110: p. 257-266.
Google Scholar

Zhou, C., et al., Printed thin-film transistors and NO2 gas sensors based on sorted semiconducting carbon nanotubes by isoindigo-based copolymer. Carbon, 2016. 108: p. 372-380.
Google Scholar

Al-Husseini, A.H., A. Al-Sammarraie, and W.R. Saleh. Specific NH3 Gas Sensor Worked at Room Temperature Based on MWCNTs-OH Network. in Nano Hybrids and Composites. 2018. Trans Tech Publ.
Google Scholar

Isa, S.S., et al. Multi-walled carbon nanotubes plastic NH3 gas sensor. in AIP Conference Proceedings. 2017. AIP Publishing LLC.
Google Scholar

Neeru, et al. Improved sensing behavior of SnO2 functionalized carbon nanotubes towards NO2 and NH3. in AIP Conference Proceedings. 2020. AIP Publishing LLC.
Google Scholar

Lone, M.Y., et al., Structural effect of SWCNTs grown by PECVD towards NH3 gas sensing and field emission properties. Materials Research Bulletin, 2019. 119: p. 110532.
Google Scholar

Bachhav, S.G. and D.R. Patil, Study of polypyrrole-coated MWCNT nanocomposites for ammonia sensing at room temperature. Journal of Materials Science and Chemical Engineering, 2015. 3(10): p. 30.
Google Scholar

Kwak, D., Y. Lei, and R. Maric, Ammonia gas sensors: A comprehensive review. Talanta, 2019. 204: p. 713-730.
Google Scholar

Kemp, N.T., et al., Effect of ammonia on the temperature‐dependent conductivity and thermopower of polypyrrole. Journal of Polymer Science Part B: Polymer Physics, 2006. 44(9): p. 1331-1338.
Google Scholar