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Search for "waste" in Full Text gives 110 result(s) in Beilstein Journal of Nanotechnology.

Synthesis of hydrophobic photoluminescent carbon nanodots by using L-tyrosine and citric acid through a thermal oxidation route

  • Venkatesh Gude

Beilstein J. Nanotechnol. 2014, 5, 1513–1522, doi:10.3762/bjnano.5.164

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  • as heterogeneous graphene quantum dots (GQDs) [15]. Many research groups developed synthetic routes to obtain CNDs without using surface passivating agents, by using natural resources like candle soot [6], orange juice [7], banana juice [16], ground soybeans [17], waste paper [18], and paper ash [19
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Published 11 Sep 2014

Liquid fuel cells

  • Grigorii L. Soloveichik

Beilstein J. Nanotechnol. 2014, 5, 1399–1418, doi:10.3762/bjnano.5.153

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  • , and formate salts are non-hazardous and easy to transport. However, the reaction (Equation 17) generates alkaline metal carbonates as a waste, which decreases the attractiveness of this approach. The mixture of formic acid and formate was proposed as a fuel for a direct fuel cell [144]. In the
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Published 29 Aug 2014

DFT study of binding and electron transfer from colorless aromatic pollutants to a TiO2 nanocluster: Application to photocatalytic degradation under visible light irradiation

  • Corneliu I. Oprea,
  • Petre Panait and
  • Mihai A. Gîrţu

Beilstein J. Nanotechnol. 2014, 5, 1016–1030, doi:10.3762/bjnano.5.115

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  • ; density functional theory; photocatalytic degradation; titanium dioxide; visible light irradiation; Introduction Titania, TiO2, has been widely used as photocatalyst for environmental applications [1][2][3][4][5][6], particularly for waste water purification. Due to its large band gap TiO2 absorbs only
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Published 11 Jul 2014

Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method

  • Sini Kuriakose,
  • Vandana Choudhary,
  • Biswarup Satpati and
  • Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2014, 5, 639–650, doi:10.3762/bjnano.5.75

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  • photocatalytic degradation efficiency, which has been found to increase with the extent of Ag nanoparticle loading. Keywords: Ag–ZnO; hybrid plasmonic nanostructures; photocatalysis; Introduction The removal of hazardous materials such as dyes and organic compounds from waste water has attracted ever
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Published 15 May 2014

Design criteria for stable Pt/C fuel cell catalysts

  • Josef C. Meier,
  • Carolina Galeano,
  • Ioannis Katsounaros,
  • Jonathon Witte,
  • Hans J. Bongard,
  • Angel A. Topalov,
  • Claudio Baldizzone,
  • Stefano Mezzavilla,
  • Ferdi Schüth and
  • Karl J. J. Mayrhofer

Beilstein J. Nanotechnol. 2014, 5, 44–67, doi:10.3762/bjnano.5.5

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Published 16 Jan 2014

Structural, optical and photocatalytic properties of flower-like ZnO nanostructures prepared by a facile wet chemical method

  • Sini Kuriakose,
  • Neha Bhardwaj,
  • Jaspal Singh,
  • Biswarup Satpati and
  • Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2013, 4, 763–770, doi:10.3762/bjnano.4.87

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  • treatment, these azo dyes may generate carcinogenic compounds such as aromatic amines. Because of this, purification and detoxification of industrial waste water has been one of the major challenges. Several methods such as adsorption, filtration, sedimentation and photocatalysis are used for the removal of
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Published 18 Nov 2013

Large-scale atomistic and quantum-mechanical simulations of a Nafion membrane: Morphology, proton solvation and charge transport

  • Pavel V. Komarov,
  • Pavel G. Khalatur and
  • Alexei R. Khokhlov

Beilstein J. Nanotechnol. 2013, 4, 567–587, doi:10.3762/bjnano.4.65

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  • circuit) to form water, 4H+ + O2 + 4e– ↔ 2H2O, while electrons travel through the external circuit to produce electric current. Because the overall reaction taking place in a PEFC is 2H2 + O2 ↔ 2H2O, the only waste product is water vapor. The structural organization of PEM determines to a large extent the
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Published 26 Sep 2013

A nano-graphite cold cathode for an energy-efficient cathodoluminescent light source

  • Alexander N. Obraztsov,
  • Victor I. Kleshch and
  • Elena A. Smolnikova

Beilstein J. Nanotechnol. 2013, 4, 493–500, doi:10.3762/bjnano.4.58

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  • as ineffective. The other 95% of the energy are transformed into heat, which cannot be considered as waste in many countries where electricity is used for house heating practically every day. In the “energy efficient” fluorescent and LED lamps the energy conversion ratio is about 10%, so that there
  • is a decrease of energy loss on heating only from 95 to 90%. At the same time, production costs for these lamps, i.e. consumption and waste of energy at the production plant, are many times higher compared to the production costs of incandescent bulbs. Thus, the development of new types of light
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Published 28 Aug 2013

Synthesis and thermoelectric properties of Re3As6.6In0.4 with Ir3Ge7 crystal structure

  • Valeriy Y. Verchenko,
  • Anton S. Vasiliev,
  • Alexander A. Tsirlin,
  • Vladimir A. Kulbachinskii,
  • Vladimir G. Kytin and
  • Andrei V. Shevelkov

Beilstein J. Nanotechnol. 2013, 4, 446–452, doi:10.3762/bjnano.4.52

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  • from waste heat (e.g., that stemming from combustion in car engines) or to cool an environment under an external power supply. However, the efficiency of these processes depends on the efficiency of the thermoelectric material in question, which is defined by the value of the figure of merit where T
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Published 17 Jul 2013

Twofold role of calcined hydrotalcites in the degradation of methyl parathion pesticide

  • Alvaro Sampieri,
  • Geolar Fetter,
  • María Elena Villafuerte-Castrejon,
  • Adriana Tejeda-Cruz and
  • Pedro Bosch

Beilstein J. Nanotechnol. 2011, 2, 99–103, doi:10.3762/bjnano.2.11

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  • effective (Figure 1b) and after 1170 minutes of the sorption process MP still remained in the waste solution as p-NP. The result using Ni–Al mixed oxide as sorbent was surprising, as it did not promote the degradation of MP (Figure 1c). Figure 2 shows the MP degradation performance to p-NP of Mg–Al, Zn–Al
  • are promising nanolayer materials for the effective cleansing of water contaminated by organic pesticides. UV–vis spectra of MP solution after being in contact with Mg–Al (a), Zn–Al (b) and Ni–Al. (c) hydrotalcite oxides, MP: methyl parathion, p-NP = p-nitrophenol. Conversion of MP to p-NP from waste
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Published 09 Feb 2011
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