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Development of electrochemical detectors consisting of metal nanoparticles on BDD and CNT for the determination of carbohydrates in lignocellulosic material of sugar cane using HPLC

Grant number: 11/20416-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2012
Effective date (End): May 31, 2014
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal researcher:Nelson Ramos Stradiotto
Grantee:Leonardo Lataro Paim
Home Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil


The need for finding new sources of renewable energy, clean and safe, puts the biomass as an energy source of great potential. Ethanol from lignocellulosic biomass, bagasse and straw, is a way to increase fuel production. Not only the question of availability of fossil fuels, but the environmental problems generated from their use as the greenhouse effect that contributes directly to global warming. The determination of carbohydrates in biomass has attracted great interest, since the accurate measurement of carbohydrate present in the samples is of utmost importance in assessing the efficiency and optimization of different processes of lignocellulosic ethanol production. Among the works developed in the analysis of carbohydrates by HPLC, using electrochemical detectors are distinguished by being sensitive, selective and present small limits of detection and a wide applicability. Given the great importance of the determination of carbohydrates in biomass together with the need to develop methods for fast, sensitive and selective determination, this project aims at the development of boron-doped diamond (BDD) and carbon nanotubos (CNT) chemically modified electrodes with metal nanoparticles (BDD/NP and CNT/NP) of NiO, CuO, FeOOH and AuO for use as electrochemical detectors in the determination of carbohydrates in lignocellulosic materials of sugar cane for HPLC with electrochemical detection (ED). The development of BDD/NP and CNT/NP will cover the construction, electrochemical, spectroscopic (XPS) and morphological (SEM-FEG) characterization, as well as the methodology for determining these compounds using the technique of HPLC-ED.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE SA, ACELINO CARDOSO; PAIM, LEONARDO LATARO; STRADIOTTO, NELSON RAMOS. Sugars Electrooxidation at Glassy Carbon Electrode Decorate with Multi-Walled Carbon Nanotubes with Nickel Oxy-Hydroxide. International Journal of Electrochemical Science, v. 9, n. 12, p. 7746-7762, DEC 2014. Web of Science Citations: 19.
WANG, QIAN; PAIM, LEONARDO LATARO; ZHANG, XIUHUA; WANG, SHENGFU; STRADIOTTO, NELSON RAMOS. An Electrochemical Sensor for Reducing Sugars Based on a Glassy Carbon Electrode Modified with Electropolymerized Molecularly Imprinted Poly-o-phenylenediamine Film. Electroanalysis, v. 26, n. 7, p. 1612-1622, JUL 2014. Web of Science Citations: 12.
SEDENHO, GRAZIELA CRISTINA; PAIM, LEONARDO LATARO; STRADIOTTO, NELSON RAMOS. Simple and direct potentiometric determination of potassium ions in biodiesel microemulsions at a glassy carbon electrode modified with nickel(II) hexacyanoferrate nanoparticles. ANALYTICAL METHODS, v. 5, n. 16, p. 4145-4151, 2013. Web of Science Citations: 8.

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