Gold nanoparticles mediate the assembly of manganese dioxide nanoparticles for H2O2 amperometric sensing

One-pot hydrothermal synthesis of uniform β-MnO2 nanorods for nitrite sensing

“…Their properties, such as electronic, optical, thermal, mechanical, and magnetic properties [1][2][3][4][5][6], are closely related with the compositions, morphologies, and structures of these materials themselves. For example, isotropic (or anisotropic) behavior and region-dependent surface reactivity are greatly dependent on the shapes and dimensions of these materials [7][8][9][10][11][12][13][14].…”

Nonenzymatic electrochemical sensing of hydrogen peroxide based on a polyaniline-MnO2 nanofiber-modified glassy carbon electrode

“…However, the poor intrinsic electronic conductivity of MnO 2 is a significant problem when seeking a performance improvement of MnO 2 -based electrochemical sensors [31]. Furthermore, because MnO 2 dissolution is facilitated by proton insertion reactions as well as a negative working potential [32], the operating conditions of several MnO 2 -based electrochemical H 2 O 2 sensors are restricted to strongly alkaline medium [26] or high positive potential regions [17][18][19][20][21][22][23][24]. In addition, at a positive working potential, oxidizable substances such as ascorbic acid and uric acid can interfere with the precision of H 2 O 2 determination.…”

“…In recent years, manganese dioxide has been widely used as an electrode material for H 2 O 2 determination [17][18][19][20][21][22][23][24][25][26][27] owing to its excellent catalytic activity toward the decomposition of hydrogen peroxide [28], and the fact that it is an environment-friendly material [29]. Moreover, MnO 2 can be synthesized simply by one-step reduction of KMnO 4 and holds good stability on GCEs [25].…”

“…In addition, at a positive working potential, oxidizable substances such as ascorbic acid and uric acid can interfere with the precision of H 2 O 2 determination. To overcome these shortcomings of MnO 2 , various conducting materials such as noble-metal nanoparticles and carbon nanomaterials have been applied in the fabrication of MnO 2 -based electrochemical H 2 O 2 sensors [17,18,20,21,[24][25][26][27]. Among these conducting nanomaterials, polyaniline (PANI), which is one of the most commonly studied conducting polymers, is a promising material for chemical sensors owing to its easy and facile synthesis, high electric conductivity, environmental stability, and conductance controllability through simple acid/base doping/dedoping chemistry [33].…”

Synthesis of Pd–Ni/C bimetallic materials and their application in non-enzymatic hydrogen peroxide detection

“…Some electrochemical sensor processes have been reported using noble metal nanoparticles [25][26][27][28]. For example, Li et al [29] prepared a non-enzymatic H 2 O 2 sensor based on Au-Ag nanotubes and chitosan film.…”