Formation of flowerlike gold nanostructure on ordered mesoporous carbon electrode and its application in electrochemical determination of ractopamine

Nafion/Silver Nanoparticles as an Electrochemically Sensitive Interface for the Detection of Ractopamine in Pork Liver

“…In a separate study, flower-like gold nanostructures were synthesized on the surface of ordered mesoporous carbon (OMC) to create a Au/OMC-modified glassy carbon electrode (GCE). 34 This modified electrode exhibited an increase in the reduction peak current and a decrease in the oxidation peak current of Au/OMC as the concentration of Rac increased, indicating strong electrocatalytic activity of Au/OMC toward Rac reduction. However, this study did not elucidate the sensing mechanism of the Au/OMC-modified GCE.…”

“…Nanoparticles (NPs) are valued for their large surface area, catalytic activity, and distinctive physical and chemical characteristics. They find applications in diverse modern technologies, from sunlight-responsive water treatment and colorimetric sensors to medical diagnostics. − Notably, gold and silver nanoparticles (AuNPs and AgNPs) have been extensively employed in electrochemical analysis for Rac determination. − In a related study, AuNPs were employed as enhancers for the selective detection of Rac and metaproterenol using electrochemical techniques . This study successfully detected Rac and metaproterenol over a wide concentration range from 10 –9 to 10 –5 M within minutes.…”

Recent Trends on Electrochemical Sensors Based on Ordered Mesoporous Carbon

“…Due to the electronic conductivity of OMC, the redox-active species can be involved in mediated electrocatalytic schemes in their immobilized form (contrary to non-conducting mesoporous hosts, such as silica-based nanomaterials, for which a certain physical mobility of mediators is necessary to get high sensitivity [ 135 , 136 ], except in case of charge transfer by electron hopping [ 137 , 138 ]). Probably the most widely-used approach is the immobilization of noble metal catalysts in the form of nanoparticles (NPs) or electrogenerated deposits [ 128 , 132 , 134 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 ] (or even bimetallic NPs [ 156 , 157 ]), which can be formed by either impregnation of metal precursors and subsequent reduction or from nanoparticles suspensions or slurries, or other NPs/deposits (metal oxides or hydroxides, metal sulfides, etc. [ 106 , 158 , 159 , 160 , 161 , 162 , 163 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , …”

“…The electrochemical sensors based on functionalized OMC [ 24 , 26 , 49 , 50 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 ...…”

Label free electrochemical aptasensor for ultrasensitive detection of ractopamine

“…Electrochemical (EC) sensors show great potential due to their simple determination procedure, fast response time, high sensitivity, lower cost and portability (Chen et al, 2011). Recently, some EC and electrochemiluminescent (ECL) sensors have been developed for detection of RAC in various sample matrixes (Yang et al, 2014;Wei et al, 2015;Li et al, 2013). These EC or ECL sensors exhibited high sensitivity and fast analysis time.…”