Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• : TiO2, CuO, CdS, MoO3; ternary compounds: Bi2Mo3O12, ZnFe2O4; quaternary compounds: Ni0.5Zn0.5Fe2O4, Bi4NbxTa1−xO8I) [19][20][21][22][23][24][25][26]. Because of its distinct features, TiO2 is the most extensively investigated photocatalytic semiconductor. However, it barely absorbs 4–5% of the

Synthesis and acetone sensing properties of ZnFe₂O₄/rGO gas sensors

• Kaidi Wu,
• Yifan Luo,
• Ying Li and
• Chao Zhang

Beilstein J. Nanotechnol. 2019, 10, 2516–2526, doi:10.3762/bjnano.10.242

• Kaidi Wu Yifan Luo Ying Li Chao Zhang College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P.R. China College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, P.R. China 10.3762/bjnano.10.242 Abstract Hollow spheres of pure ZnFe2O4 and of composites

• of ZnFe2O4 and reduced graphene oxide (rGO) with different rGO content were prepared via a simple solvothermal method followed by a high-temperature annealing process in an inert atmosphere. The X-ray diffraction analysis confirmed that the introduction of rGO had no effect on the spinel structure of

• ZnFe2O4. In addition, the results of field-emission scanning electron microscopy and (high-resolution) transmission electron microscopy indicated that the synthesized samples had the structure of hollow spheres distributed uniformly onto rGO nanosheets. The diameters of the spheres were determined as

Targeted therapeutic effect against the breast cancer cell line MCF-7 with a CuFe₂O₄/silica/cisplatin nanocomposite formulation

• B. Rabindran Jermy,
• Vijaya Ravinayagam,
• Widyan A. Alamoudi,
• Dana Almohazey,
• Hatim Dafalla,
• Lina Hussain Allehaibi,
• Abdulhadi Baykal,
• Muhammet S. Toprak and
• Thirunavukkarasu Somanathan

Beilstein J. Nanotechnol. 2019, 10, 2217–2228, doi:10.3762/bjnano.10.214

• ZnFe2O4/MCM-41 and NiFe2O4/MCM-41 synthesized via the wet impregnation technique has been studied and compared with bare ferrites. The findings show that ferrites enclosed inside the non-magnetic hexagonal pores of MCM-41 exhibit less dipolar interactions, which reduces the magnetization value due to the

Cr(VI) remediation from aqueous environment through modified-TiO₂-mediated photocatalytic reduction

• Rashmi Acharya,
• Brundabana Naik and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

• , nontoxicity, facile fabrication, enhanced adsorption ability, low cost and abundant availability [184][185]. The Trari group also reported photocatalytic reduction of Cr(VI) by spinel ZnFe2O4. The photoelectrons generated in ZnFe2O4 are injected into TiO2 and subsequently transferred to Cr(VI), which is

• , leading to longer lifetime. As a result, NiFe2O4/TiO2 NRAs, ZnFe2O4/TiO2 NRAs and SrFe2O4/TiO2 NRAs exhibited enhanced photocatalytic activity as compared to bare TiO2 NRAs. On the other hand, the CB of CoFe2O4 is more positive than that of TiO2, while its VB is more negative than that of TiO2 [50][187

Facile synthesis of ZnFe₂O₄ photocatalysts for decolourization of organic dyes under solar irradiation

• Arjun Behera,
• Debasmita Kandi,
• Sanjit Manohar Majhi,
• Satyabadi Martha and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 436–446, doi:10.3762/bjnano.9.42

• Engineering, Division of Advanced Materials Science and Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea 10.3762/bjnano.9.42 Abstract ZnFe2O4 was fabricated by a simple solution-combustion method. The structural, optical and electronic properties are investigated by XRD, TEM

• kinetics for the degradation of Rh B and Congo red, respectively. The photocatalytic behaviour of ZnFe2O4 was systematically studied as a function of the activation temperature. ZnFe2O4 prepared at 500 °C showed the highest activity in degrading Rh B and Congo red. The highest activity of ZnFe2O4-500 °C

• correlates well with the lowest PL intensity, highest photocurrent and lowest particle size. Keywords: Congo red; electrochemical study; phenol; photocatalyst; rhodamine B (Rh B); ZnFe2O4; Introduction Photocatalysis is a “green” technology for the treatment of environmental pollutants with solar energy [1

Gas-sensing behaviour of ZnO/diamond nanostructures

• Marina Davydova,
• Alexandr Laposa,
• Jiri Smarhak,
• Alexander Kromka,
• Neda Neykova,
• Josef Nahlik,
• Jiri Kroutil,
• Jan Drahokoupil and
• Jan Voves

Beilstein J. Nanotechnol. 2018, 9, 22–29, doi:10.3762/bjnano.9.4

• rapid response speed (2 s) upon exposure to CO [27]. Zhang et al. synthesized hybrid ZnFe2O4/ZnO hollow spheres that exhibited a high sensitivity to acetone and a fast response speed of 5.2 s [28]. In this study we combine the merits of two different materials (n-type ZnO and p-type H-terminated diamond

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

• Arpita Jana,
• Elke Scheer and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

Microwave synthesis of high-quality and uniform 4 nm ZnFe₂O₄ nanocrystals for application in energy storage and nanomagnetics

• Christian Suchomski,
• Ben Breitung,
• Ralf Witte,
• Michael Knapp,
• Sondes Bauer,
• Tilo Baumbach,
• Christian Reitz and
• Torsten Brezesinski

Beilstein J. Nanotechnol. 2016, 7, 1350–1360, doi:10.3762/bjnano.7.126

• Li can be expressed by ZnFe2O4 + 9Li → LiZn + 2Fe + 4Li2O. Bresser et al. recently investigated the first cycle lithiation of ZFO nanoparticles by means of in situ XRD and correlated the result with data from charge/discharge measurements [53]. They showed that different reactions (indicated by Roman

High activity of Ag-doped Cd_0.1Zn_0.9S photocatalyst prepared by the hydrothermal method for hydrogen production under visible-light irradiation

• Leny Yuliati,
• Melody Kimi and
• Mustaffa Shamsuddin

Beilstein J. Nanotechnol. 2014, 5, 587–595, doi:10.3762/bjnano.5.69

• activation process. The similar phenomenon was also reported to occur on CdS/ZnFe2O4 photocatalyst during the photocatalytic hydrogen production [27]. In order to understand the possible photochemical activation process occurred on the Ag(0.01)-doped Cd0.1Zn0.9S sample, the used sample was characterized by

Ferromagnetic behaviour of Fe-doped ZnO nanograined films

• Boris B. Straumal,
• Svetlana G. Protasova,
• Andrei A. Mazilkin,
• Thomas Tietze,
• Eberhard Goering,
• Gisela Schütz,
• Petr B. Straumal and
• Brigitte Baretzky

Beilstein J. Nanotechnol. 2013, 4, 361–369, doi:10.3762/bjnano.4.42

• thin films (see micrographs in Figure 1a). In the samples with 0.1, 5, 12, and 20 atom % Fe only pure quartzite grains are present, according to the studies with selected area diffraction (Figure 1b), TEM and XRD. These methods reveal the presence of ternary cubic zinc–iron oxide ZnFe2O4 in samples