Quantification of lead through rod-shaped silver-doped zinc oxide nanoparticles using an electrochemical approach

• Ravinder Lamba,
• Gaurav Bhanjana,
• Neeraj Dilbaghi,
• Vivek Gupta and
• Sandeep Kumar

Beilstein J. Nanotechnol. 2025, 16, 422–434, doi:10.3762/bjnano.16.33

• sensitivity toward lead. The lead chemical sensor that was developed had a detection limit of 3 ppm with a sensitivity of 16 µA·ppm−1·cm−2. The recorded reaction time of lead sensor was less than two seconds. Keywords: electrochemical methods; chemical sensor; doping; lead; nanoparticles; ZnO nanorods

• consistent performance throughout time, which is critical for obtaining accurate and repeatable electrochemical results. The lead chemical sensor was fabricated by utilizing the Ag–ZnO nanorods, which functioned as efficient electron mediators. An aqueous solution which includes freshly produced Ag–ZnO

• nanorods was generated and coated onto a gold electrode. The modified electrode was then dried to form a chemical sensor specifically designed for the detection of lead. The performance of the sensor, including sensitivity, correlation coefficient, and detection limit, was evaluated using cyclic

Review of advanced sensor devices employing nanoarchitectonics concepts

• Katsuhiko Ariga,
• Tatsuyuki Makita,
• Masato Ito,
• Taizo Mori,
• Shun Watanabe and
• Jun Takeya

Beilstein J. Nanotechnol. 2019, 10, 2014–2030, doi:10.3762/bjnano.10.198

• that the delicate modulation of nanoarchitectures can improve chemical sensor capabilities. As an example of nanoarchitectonics effects between multiple components in sensing materials, Chen, Shi, and co-workers demonstrated highly sensitive resistance-based NOx gas sensors incorporating a dispersed

Commercial polycarbonate track-etched membranes as substrates for low-cost optical sensors

• Paula Martínez-Pérez and
• Jaime García-Rupérez

Beilstein J. Nanotechnol. 2019, 10, 677–683, doi:10.3762/bjnano.10.67

• porous sensors with such easily available mesoporous material. Keywords: chemical sensor; Fabry–Pérot interferometer; optical sensor; polycarbonate; track-etched membrane; Introduction Sensors are present in our daily life in order to detect and monitor chemical, biological and physical agents of

Development of an advanced diagnostic concept for intestinal inflammation: molecular visualisation of nitric oxide in macrophages by functional poly(lactic-co-glycolic acid) microspheres

• Kathleen Lange,
• Christian Lautenschläger,
• Maria Wallert,
• Stefan Lorkowski,
• Andreas Stallmach and
• Alexander Schiller

Beilstein J. Nanotechnol. 2017, 8, 1637–1641, doi:10.3762/bjnano.8.163

• intestinal inflammation. NO550 is a chemical sensor for the cellular imaging of NO, while being inert to other reactive oxygen and nitrogen species (ROS/RNS), and is characterized by high specificity and low background signals [7]. We prepared and characterized NO550-loaded PLGA microspheres to study NO in

Metal oxide nanostructures: preparation, characterization and functional applications as chemical sensors

• Dario Zappa,
• Angela Bertuna,
• Elisabetta Comini,
• Navpreet Kaur,
• Nicola Poli,
• Veronica Sberveglieri and
• Giorgio Sberveglieri

Beilstein J. Nanotechnol. 2017, 8, 1205–1217, doi:10.3762/bjnano.8.122

• transducer. In order to have a stable chemical sensor, not only the active material, but all the components of the device, such as electrical contacts and heating system, must be stable and reliable. The scope of this manuscript is to present different techniques for the preparation of nanostructures, and to

• show the different sensing capabilities of oxides within a real application, using sensors arrays and electronic noses. Evaporation, thermal oxidation and hydrothermal methods were optimized for the direct integration of metal oxide nanowires into chemical sensor transducers, without using any transfer

• separate the contribution of pure Nb2O5 from K4Nb6O17. In literature, there are no reports on the sensing performance of this ternary compound as chemical sensor. However, it is a promising material for water splitting applications [12][13]. Functional tests After morphological and structural analysis, we

Nanostructured SnO₂–ZnO composite gas sensors for selective detection of carbon monoxide

• Paul Chesler,
• Cristian Hornoiu,
• Susana Mihaiu,
• Cristina Vladut,
• Jose Maria Calderon Moreno,
• Mihai Anastasescu,
• Carmen Moldovan,
• Bogdan Firtat,
• Costin Brasoveanu,
• George Muscalu,
• Ion Stan and
• Mariuca Gartner

Beilstein J. Nanotechnol. 2016, 7, 2045–2056, doi:10.3762/bjnano.7.195

• oxide semiconductors were used for the first time as sensing materials in 1962, when a report was released by Siyama et al. [4] regarding a thin film of ZnO. The principle of sensing, when a resistive chemical sensor is used, involves measuring the changes in electrical resistance that occur in the