Studies of probe tip materials by atomic force microscopy: a review

• Ke Xu and
• Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

• the chip, the BDD. The developed spherical BDD-AFM-SECM probes can be applied to complementary SPM experiments. The robustness of this class of bifunctional probes and the excellent electrochemical properties make it a versatile tool that can be applied to various scanning probe studies, such as tip

Constant-distance mode SECM as a tool to visualize local electrocatalytic activity of oxygen reduction catalysts

• Michaela Nebel,
• Thomas Erichsen and
• Wolfgang Schuhmann

Beilstein J. Nanotechnol. 2014, 5, 141–151, doi:10.3762/bjnano.5.14

• microscopy (4D SF/CD-SECM) was utilized for the investigation of the activity distribution of oxygen reduction catalysts. Carbon-supported Pt model catalyst powders have been immobilized in recessed microelectrodes and compared to a spot preparation technique. Microcavities serve as platform for the binder

• -free catalyst sample preparation exhibiting beneficial properties for constant-distance mode SECM imaging concerning modified surface area and catalyst loading. The integration of the redox competition mode of SECM into the detection scheme of the 4D SF/CD mode is demonstrated for specifically adapting

• high-resolution SECM experiments to powder-based catalyst preparations. Keywords: electrocatalysis; oxygen reduction; recessed microelectrodes; redox-competition SECM; SECM; scanning electrochemical microscopy; shearforce-based constant-distance mode; Introduction In scanning electrochemical

Ultramicrosensors based on transition metal hexacyanoferrates for scanning electrochemical microscopy

• Maria A. Komkova,
• Angelika Holzinger,
• Andreas Hartmann,
• Alexei R. Khokhlov,
• Christine Kranz,
• Arkady A. Karyakin and
• Oleg G. Voronin

Beilstein J. Nanotechnol. 2013, 4, 649–654, doi:10.3762/bjnano.4.72

• as sensors in scanning electrochemical microscopy (SECM) experiments for imaging of hydrogen peroxide evolution. Keywords: energy related; hydrogen peroxide; nanomaterials; nickel hexacyanoferrate; Prussian Blue; scanning electrochemical microscopy; ultramicroelectrodes; Introduction The detection

• [6]. There are a number of studies which demonstrate the detection of H2O2 in SECM experiments based on its oxidation at bare platinum electrodes at a potential of 600 mV vs SCE [7][8][9][10][11][12][13]. However, such a high oxidation potential is often disadvantageous for real-world applications as

• hexacyanoferrates. Here, we report on the highly stable ultramicrosensors comprised of alternating films of iron and nickel hexacyanoferrates for the imaging of hydrogen peroxide distribution in SECM. Results and Discussion Hexacyanoferrates were deposited onto UMEs with a diameter of 10 µm and 25 µm, respectively