ZnO-nanostructure-based electrochemical sensor: Effect of nanostructure morphology on the sensing of heavy metal ions

• Marina Krasovska,
• Vjaceslavs Gerbreders,
• Irena Mihailova,
• Andrejs Ogurcovs,
• Eriks Sledevskis,
• Andrejs Gerbreders and
• Pavels Sarajevs

Beilstein J. Nanotechnol. 2018, 9, 2421–2431, doi:10.3762/bjnano.9.227

• were carried out using these nanostructured ZnO coatings on the working electrodes using aqueous solutions of Pb(NO3)2 and Cd(NO3)2 as analytes with different concentrations. Experimental Design and fabrication of the ZnO nanostructure-based electrochemical sensor Three morphologies of well-aligned one

• series of DPV measurements in Pb(NO3)2 aqueous solution at concentrations of 1.5 μM, 3 μM, 15 μM, 30 μM, 150 μM, and 300 μM were performed. The same configuration of the cell was used in the measurements. Results and Discussion Characterization of the ZnO nanostructure-modified electrodes SEM images show

• along the (002) plane, whereas the intensity of all the remaining peaks is negligible, confirming that the ZnO nanostructure arrays are well-aligned and have a strong preferential orientation in the (002) plane direction (Figure 3). Low levels of amorphous background reveal that the nanostructures have

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

• Vardan Galstyan,
• Elisabetta Comini,
• Iskandar Kholmanov,
• Andrea Ponzoni,
• Veronica Sberveglieri,
• Nicola Poli,
• Guido Faglia and
• Giorgio Sberveglieri

Beilstein J. Nanotechnol. 2016, 7, 1421–1427, doi:10.3762/bjnano.7.133

• a reversible interaction between the analyte gases and the structure. We compared the sensing performance of the RGO–ZnO hybrid structure with a pristine ZnO nanostructure (Figure 6). The response of the nanohybrid towards both gases is much higher compared to the pristine ZnO. The response values

Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour

• Saurav Kumar,
• Sudeshna Bagchi,
• Senthil Prasad,
• Anupma Sharma,
• Ritesh Kumar,
• Rishemjit Kaur,
• Jagvir Singh and
• Amol P. Bhondekar

Beilstein J. Nanotechnol. 2016, 7, 501–510, doi:10.3762/bjnano.7.44

• , nanomaterial–biomolecule hybrid gas sensors. Keywords: amphipol; bacteriorhodopsin; bio-hybrid; gas sensing; ITO; ZnO nanostructure; Introduction Nanomaterial–biomolecule conjugates have emerged into one of the most rapidly developing and sought after areas in modern biomolecular device fabrication and