“…Designing excellent performing sensing materials that can track low concentrations of CO gas at ambient temperature is crucial in this regard. [14][15][16] At present, NASICON [17][18][19] materials are widely explored for sodium-ion batteries [20][21][22][23][24] as the solid electrolyte, cathode materials, 25 sodium removal from water, catalysis, etc. Good electrical conductivity characteristics of some NASICON such as LiZr 2 (PO 4 ) 3 , NFP, etc.…”