Abstract
•A potential solid sensor was developed for effective monitoring of Fe(II) ions.•The sensor was shown immense selectivity, sensitivity and lowest detection limit.•The foreign ions were not significantly interfered during monitoring procedures.
Herein, we reported the creation of a new chemical sensor designed with high potential to evaluate the corrosion level of Fe(II) ion in different types of water samples. The designed sensor material based on the using mesoporous silica nanospheres as a scaffold after the inlaying of its surface with 1, 10 phenanthroline (PHEN). The designed chemical sensor has the capability of detecting Fe(II) ions colorimetry even at a low level of ferrous ions (∼0.03 ppb) in fast, simple steps and rapid method (5 s.). Moreover, the fabricated sensor can also reuse multiple times in the detection system with high efficiency after the recycle and regeneration of the sensor with acidic ammonium thiocyanate for the un-chelating of the ferrous ions from the used sensor and form metal free sensor again. The sensor was tested for monitoring of corrosion level in boiler real samples, and the result revealed a great match with the acquired ICP results. The results demonstrated that the fabricated PHEN sensor provides an efficient and reliable colorimetric system for monitoring and evaluating the corrosion level in boiler systems to be used as a pre-rust detector.
[Display omitted]