Biochar: A Low‐cost Electrode Modifier for Electrocatalytic, Sensitive and Selective Detection of Similar Organic Compounds

Ferreira, Priscila Alves; Backes, Rafael; Martins, Cauê A.; Carvalho, Cláudio Teodoro de; Silva, Rodrigo Amorim Bezerra da

doi:10.1002/elan.201800430

Cited by 26 publications

(13 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some examples of using biochar for electrochemical sensing are reported in literature (de Almeida et al, 2020). Other carbonaceous materials from biomass have already been used for electrode production (Ferreira et al, 2018;João et al, 2020;Rocha et al, 2020). Li et al (2018) proposed electrically conductive and mechanically stable carbon nanofiber aerogels made from wood-derived nanofibrillated cellulose.…”

Section: Other Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Sustainable Printed Electrochemical Platforms for Greener Analytics

Sfragano

Laschi²,

Palchetti

2020

Front. Chem.

View full text Add to dashboard Cite

The development of miniaturized electrochemical platforms holds considerable importance for the in situ analytical monitoring of clinical, environmental, food, and forensic samples. However, it is crucial to pay attention to the sustainability of materials chosen to fabricate these devices, in order to decrease the amount and the impact of waste coming from their production and use. In the framework of a circular economy and an environmental footprint reduction, the electrochemical sensor production technology must discover the potentiality of innovative approaches based on techniques and materials that can satisfy the needs of environmental-friendly and greener analytics. The aim of this review is to describe some of the printing technologies most used for sensor production, including screen-printing, inkjet-printing, and 3D-printing, and the low-impact materials that are recently proposed for these techniques, such as polylactic acid, cellulose, silk proteins, biochar.

show abstract

Section: Other Materialsmentioning

confidence: 99%

Section: Novel Materials For Printingmentioning

confidence: 99%

Sustainable Printed Electrochemical Platforms for Greener Analytics

Sfragano

Laschi²,

Palchetti

2020

Front. Chem.

View full text Add to dashboard Cite

show abstract

“…Furthermore, the modi cation done to the BC by the addition of different modi ers like metal and metal oxide nanoparticles can impart new properties to the BC electrode. The combination of Gold nanoparticle (Au-NPs) and biochar (BC) to form nanocomposites improves the e ciency of the electrode (Ferreira et al 2018). The Gold nanoparticle (Au-NPs) offer unique electrical, optical, mechanical, and magnetic properties different from their bulk form.…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticle fortified bamboo biochar Nanocomposite

2021

Preprint

View full text Add to dashboard Cite

Gold nanoparticles due to their specific properties and function have found uses in the field of engineering to medical sciences. The Gold nanoparticles are always used in conjugation with other chemicals, metals, proteins, and other organic materials. The addition of other conjugates enhances the properties of Gold nanoparticles. As the insertion of metal nanoparticles into an organic matrix effectively increases the specific surface area of such materials, thereby enhancing the desired properties of the material. The term nanocomposite(NCs) is used for material containing an inorganic moiety, with at least one dimension in a nanometre range of 1–100 nm(nanoparticles ) and other materials like metal, ceramics, and polymers. The term “Bionanocomposite" (BNCs)has been assigned to nanocomposites containing a component of biological origin in the mixture. In this work, Bamboo (Bambusa bambos) was used as the organic matrix for the preparation of gold nanoparticle biochar (Au-NPs/BC) nanocomposite. The one-step synthesis approach was used for the treatment of Bamboo with Auric Chloride Salt at room temperature. In addition to the above process, the bamboo was also pyrolyzed at low temperature after treatment, which helped further to reduce the overall cost of the method. This made the method of preparation of the nanocomposite low cost and eco-friendly. Various analytical techniques such as Fourier transform infrared (FT-IR), X‐ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X‐ray spectroscopy (EDS), and UV–Vis spectroscopy methods were used for the characterization of the synthesized nanocomposite. This nanocomposite was used for the preparation of electrodes and its electrical conductivity was tested. In this method, the nanocomposite was prepared in a good amount via a very simple methodology. The characterization revealed the presence of gold in the nanocomposite, which confirms that this method can be used for the preparation of the (Au-NPs/BC) nanocomposite.

show abstract

“…14 Chemical activation is based on formation of functional groups at carbonaceous surface by use of chemical agents such as nitric acid, 15 sodium hydroxide, 16 hydrogen peroxide, 17 hydrochloric acid, 18 sulfuric acid, 19 potassium permanganate 20 and others as reported by several authors. 21,22 Besides of agricultural use of biochar, several papers [23][24][25][26] describing its use for construction of voltammetric sensors have been recently reported. These electroanalytical methods are based on spontaneous sorption ability of high functionalized biochar surface for organic and inorganic species.…”

Section: Introductionmentioning

confidence: 99%

Chemically-Activated Biochar from Ricinus communis L. Cake and Their Potential Applications for the Voltammetric Assessment of Some Relevant Environmental Pollutants

Kalinke

Oliveira

Mangrich

et al. 2020

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Biochar is a rich-carbon material highly functionalized, which allows the use as electrodes modifier for preconcentration and voltammetric determination of several species. This work describes a castor cake biochar production and chemical activation with different reaction conditions using HNO 3 and/or H 2 O 2 . Biochar samples were characterized using scanning electron microscopy, energy dispersive spectroscopy, thermogravimetric analysis, Fourier-transform infrared spectroscopy, Raman and zeta potential. Carbon paste modified electrodes (CPME) have been constructed using different biochar samples to evaluate the adsorptive capacity for the spontaneous preconcentration and voltammetric determination of Pb 2+ , Cd 2+ , Cu 2+ and Ni 2+ ions, paraquat and methyl parathion pesticides. The activation treatments promoted modifications in the elemental, morphological and structural biochar characteristics. Activated biochar CPMEs showed increase in the current signal around 15 and 2.5 times higher than unmodified and precursor biochar electrode, respectively. N2 sample (HNO 3 , 60 °C for 3.0 h) presented the better response signals for all compounds. This was attributed to the more effective surface oxidation, promoting a high porosity, acid character and amount of acid functional groups. Besides that, this greater analytical response allows the CPME-N2 application as a passive sampler for the voltammetric determination of inorganic and organic contaminants for environmental management in aqueous matrices.

show abstract

Biochar: A Low‐cost Electrode Modifier for Electrocatalytic, Sensitive and Selective Detection of Similar Organic Compounds

Cited by 26 publications

References 28 publications

Sustainable Printed Electrochemical Platforms for Greener Analytics

Sustainable Printed Electrochemical Platforms for Greener Analytics

Gold nanoparticle fortified bamboo biochar Nanocomposite

Chemically-Activated Biochar from Ricinus communis L. Cake and Their Potential Applications for the Voltammetric Assessment of Some Relevant Environmental Pollutants

Contact Info

Product

Resources

About