A TiO₂@MWCNTs nanocomposite photoanode for solar-driven water splitting

• Anh Quynh Huu Le,
• Ngoc Nhu Thi Nguyen,
• Hai Duy Tran,
• Van-Huy Nguyen and
• Le-Hai Tran

Beilstein J. Nanotechnol. 2022, 13, 1520–1530, doi:10.3762/bjnano.13.125

• -603103, Tamil Nadu, India 10.3762/bjnano.13.125 Abstract A TiO2@MWCNTs (multi-wall carbon nanotubes) nanocomposite photoanode is prepared for photoelectrochemical water splitting in this study. The physical and photoelectrochemical properties of the photoanode are characterized using field emission

• under solar irradiation. Keywords: multi-wall carbon nanotubes (MWCNTs); nanomaterials; photoelectrochemical; TiO2; water splitting; Introduction TiO2 is an excellent photochemical catalyst for environmental and chemical applications due to its good activity regarding numerous reduction and oxidation

• ) conversion efficiency of TiO2-based photoanodes (0.2–0.42%) is lower than that of TiO2/CNT anodes (4.4%), which is attributed to a wider bandgap of the TiO2 photocatalyst and the lesser extent of e−/h+ pair recombination [12]. Dai et al. prepared a MWCNTs/TiO2 (MWCNTs = multi-wall carbon nanotubes

Low-cost formation of bulk and localized polymer-derived carbon nanodomains from polydimethylsiloxane

• Juan Carlos Castro Alcántara,
• Mariana Cerda Zorrilla,
• Lucia Cabriales,
• Luis Manuel León Rossano and
• Mathieu Hautefeuille

Beilstein J. Nanotechnol. 2015, 6, 744–748, doi:10.3762/bjnano.6.76

• method. Namely, graphitic nanocrystals were found in shiny areas (demonstrated by the presence of D, G and 2D bands) while multi-wall carbon nanotubes (MWCNT) were found in dark regions (with the apparition of D, G and G′ bands, but without RBM band) [16]. It is interesting to remark that the laser

• -wall carbon nanotubes are left inside microchannels and preliminary results seem to indicate that laser ablation could offer a tuning control of the nature and optical properties of the nanodomains that are left inside micropatterns with on-demand geometries. These low-cost methods look particularly

• characterization of the byproduct materials are reported. We demonstrate that CVD led to bulk production of graphitic nanocrystals and single-walled carbon nanotubes while direct laser ablation may be employed for the formation of localized fluorescent nanodots. In the latter case, graphitic nanodomains and multi

Photodetectors based on carbon nanotubes deposited by using a spray technique on semi-insulating gallium arsenide

• Domenico Melisi,
• Maria Angela Nitti,
• Marco Valentini,
• Antonio Valentini,
• Teresa Ligonzo,
• Giuseppe De Pascali and
• Marianna Ambrico

Beilstein J. Nanotechnol. 2014, 5, 1999–2006, doi:10.3762/bjnano.5.208

• , 70126, Italy 10.3762/bjnano.5.208 Abstract In this paper, a spray technique is used to perform low temperature deposition of multi-wall carbon nanotubes on semi-insulating gallium arsenide in order to obtain photodectors. A dispersion of nanotube powder in non-polar 1,2-dichloroethane is used as

• light in the range from ultraviolet to near infrared. The device spectral efficiency obtained from the electrical characterization is finally reported and an improvement of the photodetector behavior due to the nanotubes is presented and discussed. Keywords: multi-wall carbon nanotubes; photodetectors

Carbon nano-onions (multi-layer fullerenes): chemistry and applications

• Juergen Bartelmess and
• Silvia Giordani

Beilstein J. Nanotechnol. 2014, 5, 1980–1998, doi:10.3762/bjnano.5.207

• large CNOs produced by an underwater carbon-arc discharge, as well as of multi-wall carbon nanotubes (MWCTNs) on human skin fibroblasts and found more adverse effects upon exposure to MWCNTs as compared to CNOs. However, CNOs were also found to cause negative effects on the studied cell cultures. The

• electrical double layer capacitors (EDLC) with an organic electrolyte was published only in 2007. The electrochemical performance of CNO electrodes was compared with electrodes made with nanodiamonds, multi-wall carbon nanotubes and carbon black [55]. Following this initial work, several groups studied CNO

Liquid fuel cells

• Grigorii L. Soloveichik

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

• much higher activity than Pt-based ones, e.g., PtRu, which is widely used in DMFCs [114]. An active alkaline fuel cell running on 5% glycerol and using Pd catalyst supported on multi-wall carbon nanotubes generated 80 mW/cm2 peak power at 80 °C. The product mixture included formate and carbonate [114