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رزان عبدالله ناصر الشقاري

Assistant Professor

أستاذ مساعد

كلية العلوم
مبنى 5 الدور الثالث مكتب 182

Surface engineering of roselike lanthanum molybdate electrocatalyst modified screen-printed carbon electrode for robust and highly sensitive sensing of antibiotic drug

Creation of efficient electrochemical sensor for the ultrasensitive identification of food toxic chemicals (organo arsenic compound). We also investigated the possibility of rapid identification of coccidiostat using rose-like tetragonal lanthanum molybdates as a modified electrode. Moreover, the lanthanum molybdates modified electrodes were concentrated on the evolution of electrochemical reduction achievements for the analysis of organo arsenic compound roxarsone (ROX) in different meat products. The modified sensor is constructed by rose-like lanthanum molybdates (RL-La2(MoO4)3) on to an SPCE (screen-printed carbon electrode). The two-dimensional nanosheets like RL-La2(MoO4)3 electrocatalyst reveal enhanced detection towards ROX by the combination of electrostatic attraction between ROX and RL-La2(MoO4)3 surfaces. The modified sensor has exhibited a very low detection limit (12.4 nM) in the neutral supporting electrolyte by electrochemical methods. Furthermore, the modified sensor ranges of ROX is 0.025–2650 μM. Also, sensitivity of RL-La2(MoO4)3 electrode is calculated as 13.366 μA·μM−1·cm−2 and 42.619 μA·μM−1·cm−2. The lanthanum molybdates modified device shows good stability and reasonable reproducibility. The obtained electrochemical results are satisfactory based on the RL-La2(MoO4)3 electrocatalyst modified sensor for food analysis.

Volume Number
164
Issue Number
106044
Magazine \ Newspaper
Microchemical Journal
Pages
1-9
more of publication
publications

In this work, a simple synthesis of (silver molybdate) Ag2MoO4 nanowires was developed by varying the pH. By adjusting the pH,
agglomeration of each Ag2MoO4 nanowires were seen and…

2020
publications

Creation of efficient electrochemical sensor for the ultrasensitive identification of food toxic chemicals (organo arsenic compound). We also investigated the possibility of rapid identification…

2021
publications

We developed an almond like structured SrMoO4 embedded on sulfur doped-graphitic carbon nitride composites (SrMoO4/SGCN) by green methods for electrochemical detection of CAP.