Construction of portable electrochemical immunosensors based on graphene hydrogel@polydopamine for microcystin-LR detection using multi-mesoporous carbon sphere-enzyme labels

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 51662-51669 ◽  
Author(s):  
Cuifen Gan ◽  
Zihong Sun ◽  
Li Ling ◽  
Zuyu He ◽  
Hongtao Lei ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Substrate Material ◽  
Electrochemical Immunosensor ◽  
Carbon Sphere ◽  
Electrochemical Immunosensors ◽  
Enzyme Labels

A portable electrochemical immunosensor was fabricated for the detection of microcystin-LR by using graphene hydrogel@polydopamine as the substrate material and multi-HRP-(MCSs/Thi@AuNPs)-Ab2 as the signal label.

Electrochemical Immunosensors Based on Nanostructured Materials for Sensing of Prostate-Specific Antigen: A Review

2020 ◽  
Vol 28 ◽  
Author(s):  
Hayati Filik ◽  
Asiye Aslıhan Avan ◽  
Mustafa Özyürek
Keyword(s):  
Prostate Specific Antigen ◽  
Nanostructured Materials ◽  
Specific Antigen ◽  
Electrochemical Immunosensor ◽  
Label Free ◽  
Electrochemical Immunosensors ◽  
Metal Metal ◽  
Different Types ◽  
Sandwich Type ◽  
Carbon Based Nanomaterials

: The prostate-specific antigen (PSA) has been considered a crucial serological marker for distinguishing prostate based cancer. This surveys recent progress in the construction of nanomaterial-based electrochemical immunosensors for a PSA. This review (from 2015 to 2020) reports the latest progress in PSA sensing based on the employ of different types of nanostructured materials. The most popular used nanostructured materials are metal, metal oxide, carbon-based nanomaterials, and their hybrid architectures utilized for distinct amplification protocols. In this review, the electrochemical immunosensors for prostate-specific antigen sensing are classified into three categories such as sandwich type@labeled, label free@nonlabeled and aptamer-based electrochemical immunosensor.

scholarly journals Metal Nanoparticle and Quantum Dot Tags for Signal Amplification in Electrochemical Immunosensors for Biomarker Detection

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 85
Author(s):  
Anton Popov ◽  
Benediktas Brasiunas ◽  
Asta Kausaite-Minkstimiene ◽  
Almira Ramanaviciene
Keyword(s):  
Signal Amplification ◽  
Electrochemical Immunosensor ◽  
Metal Nanoparticle ◽  
Biomarker Detection ◽  
Analytical Instruments ◽  
Electrochemical Immunosensors ◽  
Highly Sensitive ◽  
Recent Developments ◽  
Electrochemical Signal ◽  
Detection Of Biomarkers

With the increasing importance of healthcare and clinical diagnosis, as well as the growing demand for highly sensitive analytical instruments, immunosensors have received considerable attention. In this review, electrochemical immunosensor signal amplification strategies using metal nanoparticles (MNPs) and quantum dots (Qdots) as tags are overviewed, focusing on recent developments in the ultrasensitive detection of biomarkers. MNPs and Qdots can be used separately or in combination with other nanostructures, while performing the function of nanocarriers, electroactive labels, or catalysts. Thus, different functions of MNPs and Qdots as well as recent advances in electrochemical signal amplification are discussed. Additionally, the methods most often used for antibody immobilization on nanoparticles, immunoassay formats, and electrochemical methods for indirect biomarker detection are overviewed.

Ordered mesoporous carbon sphere-based solid-contact ion-selective electrodes

2019 ◽  
Vol 54 (21) ◽  
pp. 13674-13684 ◽  
Author(s):  
Zidengya Jiang ◽  
Xin Xi ◽  
Shi Qiu ◽  
Dongqing Wu ◽  
Wei Tang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ion Selective Electrodes ◽  
Carbon Sphere ◽  
Solid Contact ◽  
Ordered Mesoporous

scholarly journals Dendrimers as Soft Nanomaterials for Electrochemical Immunosensors

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1745 ◽  
Author(s):  
Alfredo Sánchez ◽  
Anabel Villalonga ◽  
Gonzalo Martínez-García ◽  
Concepción Parrado ◽  
Reynaldo Villalonga
Keyword(s):  
Pharmaceutical Analysis ◽  
State Of The Art ◽  
Three Dimensional ◽  
Electrochemical Immunosensor ◽  
High Impact ◽  
Branched Polymers ◽  
Electrochemical Immunosensors ◽  
Signal Production ◽  
Poly Propylene ◽  
Affinity Biosensors

Electrochemical immunosensors are antibody-based affinity biosensors with a high impact on clinical, environmental, food, and pharmaceutical analysis. In general, the analytical performance of these devices is critically determined by the materials and reagents used for their construction, signal production and amplification. Dendrimers are monodisperse and highly branched polymers with three-dimensional structures widely employed as “soft” nanomaterials in electrochemical immunosensor technology. This review provides an overview on the state-of-the-art in dendrimer-based electrochemical immunosensors, focusing on those using polyamidoamine and poly (propylene imine) dendrimers. Special emphasis is given to the most original methods recently reported for the construction of immunosensor architectures incorporating dendrimers, as well as to novel sensing approaches based on dendrimer-assisted signal enhancement strategies.

Electrochemical immunosensor based on colloidal carbon sphere array

2010 ◽  
Vol 25 (5) ◽  
pp. 1130-1136 ◽  
Author(s):  
Xiaojun Chen ◽  
Kui Zhang ◽  
Jinjun Zhou ◽  
Jie Xuan ◽  
Wei Yan ◽  
...  
Keyword(s):  
Electrochemical Immunosensor ◽  
Carbon Sphere ◽  
Colloidal Carbon

scholarly journals Synthesis and characterization of mesoporous carbon spheres

2019 ◽  
Vol 37 (4) ◽  
pp. 585-589
Author(s):  
Shuiping Li ◽  
Huajun Zhu ◽  
Guilong Xu ◽  
Qing Lin ◽  
Chengshuang Wang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Cost Effective ◽  
Crystal Form ◽  
Carbon Sphere ◽  
Selective Leaching ◽  
Mass Ratio ◽  
Step Method ◽  
Resorcinol Formaldehyde ◽  
Structure Morphology

AbstractA three-step method was used for the synthesis of mesoporous carbon sphere (MCS) material: firstly, silica (SiO2) nanoparticles were synthesized by the modified Stöber procedure; secondly, tetraethyl orthosilicate (TEOS) and cetyltrimethylammonium chloride (CTAC) were grafted onto SiO2 core nanoparticles to prepare SiO2@SiO2-CTAC hard templates; lastly, MCS material was fabricated by carbonizing and selective leaching SiO2/resorcinol-formaldehyde (RF) composites. The influence of the mass ratio of R-F/silica on the structure, morphology and crystal form was studied. The results indicate that the MCS materials have a uniform morphology. The increase of the mass ratio of R-F/silica can increase the specific surface area and pore volume. The three-step method provides a cost-effective procedure for the fabrication of MCS materials with uniform morphology.

Hollow Mesoporous Carbon Sphere Loaded Ni–N 4 Single‐Atom: Support Structure Study for CO 2 Electrocatalytic Reduction Catalyst

Small ◽  
2020 ◽  
Vol 16 (41) ◽  
pp. 2003943 ◽  
Author(s):  
Wanfeng Xiong ◽  
Hongfang Li ◽  
Huimin Wang ◽  
Jundong Yi ◽  
Hanhui You ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Structure Study ◽  
Single Atom ◽  
Carbon Sphere ◽  
Electrocatalytic Reduction ◽  
Support Structure

scholarly journals One-step synthesis of mesoporous carbon/ iron sulfide nanocomposite for supercapacitors

2018 ◽  
Vol 9 (1) ◽  
pp. 55-62
Author(s):  
Xiaolong Yu ◽  
Bogang Li
Keyword(s):  
Mesoporous Carbon ◽  
Iron Sulfide ◽  
Negative Electrode ◽  
High Specific Capacitance ◽  
Carbon Sphere ◽  
Rate Performance ◽  
One Step ◽  
Carbon Iron ◽  
Superior Cycling Stability ◽  
Negative Electrode Material

Mesoporous C@FexSy composite as a negative electrode for supercapacitors was synthesized via a one-step hydrothermal treatment followed by an electrodeposition process and its electrochemical properties were studied. Compared with bare carbon sphere, the electrochemical performance of C@FexSy composite was significantly improved, with a high specific capacitance (267.45 F/g), good rate performance (201.08 F/g at 2.5 A/g), and superior cycling stability (almost no capacitance degradation after 1000 cycles). The results show that the obtained C@FexSy composite is a promising negative electrode material for supercapacitors

Sign in / Sign up

Export Citation Format

Share Document