Laser processing in liquids: insights into nanocolloid generation and thin film integration for energy, photonic, and sensing applications

• Akshana Parameswaran Sreekala,
• Pooja Raveendran Nair,
• Jithin Kundalam Kadavath,
• Bindu Krishnan,
• David Avellaneda Avellaneda,
• M. R. Anantharaman and
• Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 1428–1498, doi:10.3762/bjnano.16.104

• influencing the particle size [61]. Figure 5b,c depicts this dependency studies of laser fluence required to melt a single particle of Au, Fe3O4, and Fe2O3 using different wavelengths of laser (355 and 532 nm). Longer laser irradiation times lead to larger particle sizes, with initially inhomogeneous

• spheres and is suitable for a variety of metal and semiconductor NPs, including Ag, Au, Cu, Fe, Ni, Fe2O3, Fe3O4, Co3O4, NiO, TiO2, WO3, and ZnO, which all exhibit optical absorption at 355 or 532 nm (using a Nd:YAG laser). Pulsed laser irradiation of colloidal NPs differs from LAL primarily in that PLIL

Structural and magnetic properties of microwave-synthesized reduced graphene oxide/VO₂/Fe₂O₃ nanocomposite

• Sumanta Sahoo,
• Ankur Sood and
• Sung Soo Han

Beilstein J. Nanotechnol. 2025, 16, 921–932, doi:10.3762/bjnano.16.70

• gained considerable research attention. In this context, the current work demonstrates a facile rGO-supported solid-state MW synthetic route for fabricating a ternary nanocomposite of VO2, Fe2O3, and rGO. Here, the MW irradiation for 90 s was found to be suitable for the reduction and exfoliation of

• graphite oxide to form rGO, the reduction of V2O5 to form VO2, and the formation of Fe2O3 from ferrocene. X-ray diffraction and X-ray photoelectron spectroscopy analyses confirm the formation of distinct metal oxides in the presence of rGO. Furthermore, the morphological analysis reveals the deposition of

• Fe2O3 nanoparticles and VO2 nanorods on the 2D rGO surface. Notably, the ternary composite displayed good magnetic properties for its potential biomedical applications. Overall, this work explores an efficient and cost-effective synthetic approach for developing graphene-based magnetic nanocomposites

Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection

• Akshana Parameswaran Sreekala,
• Bindu Krishnan,
• Rene Fabian Cienfuegos Pelaes,
• David Avellaneda Avellaneda,
• Josué Amílcar Aguilar-Martínez and
• Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 785–805, doi:10.3762/bjnano.16.60

• liquid using different wavelengths and laser fluences [18]. During the synthesis of FeS2 NPs by PLAL in different solvents, Motohashi et al. has reported the formation of hematite (Fe2O3) as major product and Fe–S as minor product [19]. Sai et al. synthesized pyrite nanoparticles for photovoltaic

Changes of structural, magnetic and spectroscopic properties of microencapsulated iron sucrose nanoparticles in saline

• Sabina Lewińska,
• Pavlo Aleshkevych,
• Roman Minikayev,
• Anna Bajorek,
• Mateusz Dulski,
• Krystian Prusik,
• Tomasz Wojciechowski and
• Anna Ślawska-Waniewska

Beilstein J. Nanotechnol. 2025, 16, 762–784, doi:10.3762/bjnano.16.59

• Fe3+ ion, and their binding energies correspond to literature values for both Fe2O3 and FeOOH [92]. However, the correlation of these peaks with the Fe2O3 phase is rejected, as the presence of this phase in the tested samples has not been confirmed by any other studies. Also, in the obtained Fe 2p

Zeolite materials with Ni and Co: synthesis and catalytic potential in the selective hydrogenation of citral

• Inocente Rodríguez-Iznaga,
• Yailen Costa Marrero,
• Tania Farias Piñeira,
• Céline Fontaine,
• Lexane Paget,
• Beatriz Concepción Rosabal,
• Arbelio Penton Madrigal,
• Vitalii Petranovskii and
• Gwendoline Lafaye

Beilstein J. Nanotechnol. 2025, 16, 520–529, doi:10.3762/bjnano.16.40

• ) [23]. It underwent a purification process following a method similar to one described previously [18]. Its elemental chemical composition in oxide form is 65.7% SiO2, 11.4% Al2O3, 3.4% CaO, 2.4% Na2O, 1.3% K2O, 1.1% MgO, and 2.6% Fe2O3. For simplicity, this purified zeolite is referred to as ZSA

Emerging strategies in the sustainable removal of antibiotics using semiconductor-based photocatalysts

• Yunus Ahmed,
• Keya Rani Dutta,
• Parul Akhtar,
• Md. Arif Hossen,
• Md. Jahangir Alam,
• Obaid A. Alharbi,
• Hamad AlMohamadi and
• Abdul Wahab Mohammad

Beilstein J. Nanotechnol. 2025, 16, 264–285, doi:10.3762/bjnano.16.21

• efficacy of TiO2 under visible or solar-simulated light, retrieving the synthesized small particles poses new challenges. Researchers have recently synthesized heterojunctions using TiO2 and magnetic particles such as α-Fe2O3 and Fe3O4 in order to solve the problem of recovering particles. They

• accomplished the separation with success, greatly enhancing the efficiency of the catalysts and their potential to be reused, while also decreasing the overall cost of synthesis. The construction of the α-Fe2O3@TiO2 photocatalyst resulted in a higher efficiency in removing the antibiotic cefixime (CFX) than

• that of pure TiO2 and Fe2O3 under visible light illumination (500 W halogen lamp and wavelengths above 400 nm) [72]. At a dosage of 0.012 g/L of α-Fe2O3@TiO2 and pH 4.76, 98.8% of an initial CFX concentration of 20.5 mg/L was effectively removed after 103 min. The heterojunction formed between TiO2 and

Recent advances in photothermal nanomaterials for ophthalmic applications

• Jiayuan Zhuang,
• Linhui Jia,
• Chenghao Li,
• Rui Yang,
• Jiapeng Wang,
• Wen-an Wang,
• Heng Zhou and
• Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

• , including exceptional biocompatibility, biodegradability, wide availability, low cost, and a highly tunable structure, making them well-suited for such uses [67][68][69][70][71]. 2.3 Inorganic semiconductor materials Inorganic semiconductor materials, such as TiO2, SiO2, and Fe2O3, possess conductivity

Facile synthesis of Fe-based metal–organic frameworks from Fe₂O₃ nanoparticles and their application for CO₂/N₂ separation

• Van Nhieu Le,
• Hoai Duc Tran,
• Minh Tien Nguyen,
• Hai Bang Truong,
• Toan Minh Pham and
• Jinsoo Kim

Beilstein J. Nanotechnol. 2024, 15, 897–908, doi:10.3762/bjnano.15.74

• 17104, Korea 10.3762/bjnano.15.74 Abstract A facile approach was employed to fabricate MIL-100(Fe) materials from Fe2O3 nanoparticles through a conventional hydrothermal reaction without the presence of HF and HNO3. Effects of trimesic acid content in the reaction system on the quality and CO2/N2

• separation performance of the as-prepared MIL-100(Fe) samples were investigated. Using 1.80 g of trimesic acid in the reaction system yielded the sample M-100Fe@Fe2O3#1.80, which proved to be the optimal sample. This choice struck a balance between the amount of required trimesic acid and the quality of the

• resulting material, resulting in a high yield of 81% and an impressive BET surface area of 1365.4 m2·g−1. At 25 °C and 1 bar, M-100Fe@Fe2O3#1.80 showed a CO2 adsorption capacity of 1.10 mmol·g−1 and an IAST-predicted CO2/N2 selectivity of 18, outperforming conventional adsorbents in CO2/N2 separation

A review on the structural characterization of nanomaterials for nano-QSAR models

• Salvador Moncho,
• Eva Serrano-Candelas,
• Jesús Vicente de Julián-Ortiz and
• Rafael Gozalbes

Beilstein J. Nanotechnol. 2024, 15, 854–866, doi:10.3762/bjnano.15.71

• the relevance of their distribution along the molecule. However, the core of the NMs is typically composed by chemicals with a simpler and repetitive chemical structure. Most inorganic materials are composed of single elements (e.g., Au or Ag) or binary compounds (e.g., Fe2O3, CdSe, or SiO2). The most

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode

• Vu Ngoc Hoang,
• Dang Thi Ngoc Hoa,
• Nguyen Quang Man,
• Le Vu Truong Son,
• Le Van Thanh Son,
• Vo Thang Nguyen,
• Le Thi Hong Phong,
• Ly Hoang Diem,
• Kieu Chan Ly,
• Ho Sy Thang and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

• lithium-ion storage performance of C-GQDs/α-Fe2O3 composites in lithium batteries presented excellent cyclability and rate capability [19]. Among several chemical approaches for the synthesis of titania, sol–gel processes have been commonly used for practical application. In these sol–gel methods

Laser synthesis of nanoparticles in organic solvents – products, reactions, and perspectives

• Theo Fromme,
• Sven Reichenberger,
• Katharine M. Tibbetts and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2024, 15, 638–663, doi:10.3762/bjnano.15.54

Exfoliation of titanium nitride using a non-thermal plasma process

• Priscila Jussiane Zambiazi,
• Dolores Ribeiro Ricci Lazar,
• Larissa Otubo,
• Rodrigo Fernando Brambilla de Souza,
• Almir Oliveira Neto and
• Cecilia Chaves Guedes-Silva

Beilstein J. Nanotechnol. 2024, 15, 631–637, doi:10.3762/bjnano.15.53

• electrostatically driven exfoliation of WO3 powder using bovine serum albumin as an exfoliating agent at pH 4 [8]. Subsequently, in 2018, Balan et al. [9] achieved the synthesis of hematene, a n-vdW 2D material, from natural iron ore hematite (α-Fe2O3) using liquid exfoliation. Unlike hematite, hematene exhibited

Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods

• Veaceslav Ursaki,
• Tudor Braniste,
• Victor Zalamai,
• Emil Rusu,
• Vladimir Ciobanu,
• Vadim Morari,
• Daniel Podgornii,
• Pier Carlo Ricci,
• Rainer Adelung and
• Ion Tiginyanu

Beilstein J. Nanotechnol. 2024, 15, 490–499, doi:10.3762/bjnano.15.44

• metal oxides [1][9][10]. Metal oxides include TiO2, ZnO, Al2O3, WO3, Cu2O, CuO, SnO2, Fe2O3, Bi2O3, Ag3PO4, BiWO4, BiVO4, BiFeO3, and SeTiO3, while chalcogenides are represented by ZnS, ZnSe, CdS, PbS, CdSe, SnS2, and Bi2S3. Among porous semiconductor materials, recently developed super-lightweight ones

Classification and application of metal-based nanoantioxidants in medicine and healthcare

• Nguyen Nhat Nam,
• Nguyen Khoi Song Tran,
• Tan Tai Nguyen,
• Nguyen Ngoc Trai,
• Nguyen Phuong Thuy,
• Hoang Dang Khoa Do,
• Nhu Hoa Thi Tran and
• Kieu The Loan Trinh

Beilstein J. Nanotechnol. 2024, 15, 396–415, doi:10.3762/bjnano.15.36

• to biological systems can cause detrimental effects on human health. Sobolewski et al. confirmed the Fe2O3 nanoparticles with sizes between 11.2 and 13.6 nm can lead to oxidative damage and neurotoxicity in the mouse brain [189]. Meanwhile, the rapid clearance of SiNPs from blood depletes plasma

Multiscale modelling of biomolecular corona formation on metallic surfaces

• Parinaz Mosaddeghi Amini,
• Ian Rouse,
• Julia Subbotina and
• Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

• (TiO2, SiO2, and Fe2O3), carbonaceous NPs (graphene, carbon nanotubes, and carbon black), semiconductors (CdSe) [26], and polymers [27], it lacks the set of short-range potentials required for calculating milk protein-aluminum adsorption energies. Here, we compute potentials of mean force (PMF) for Al

Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability

• Dienifer F. L. Horsth,
• Julia de O. Primo,
• Nayara Balaba,
• Fauze J. Anaissi and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37

• to use chromium as a coloring ion to obtain the same color result, without using toxic precursors. Remarkably, iron oxide red belongs to the class of yellow, red, and brown ocher, whose color depends on the crystallographic phase [11]. The hematite phase (α-Fe2O3) is the most stable, and its shade

• phase is that of corundum (Al2O3), based on a hexagonal matrix of oxygen with two thirds of the octahedral sites filled with Cr3+ ions [17]. The phase mixture observed in sample 2 (Figure 1c) consists of α-Al2O3 [96-900-8082] and hematite (α-Fe2O3) [96-591-0083]. The indexing of the hematite phase

• observed by XRD. The spectrum is composed of four E1g vibrational modes (ca. 242 cm−1, ca. 413 cm−1, ca. 525 cm−1, and ca. 605 cm−1), as previously reported [19]. The Raman spectrum of sample 2 (Figure 2b) presents the seven optical symmetry modes expected for hematite (α-Fe2O3) in agreement with the XRD

Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

• Mykhailo Nahorniak,
• Pamela Pasetto,
• Jean-Marc Greneche,
• Volodymyr Samaryk,
• Sandy Auguste,
• Anthony Rousseau,
• Nataliya Nosova and
• Serhii Varvarenko

Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2

• oxide nanoparticles in biomedicine requires in-depth studies of their structure and properties. It was well-established that different iron oxides (e.g., magnetite (Fe3O4), maghemite (γ-Fe2O3), goethite (α-FeOOH), and wüstite (FeO)), have a divergent impact on biological objects [7]. In this regard

• ), without additional co-stabilizers or reducing agents, could be applied to obtain monodisperse nanoparticles of iron oxide (Fe3O4, Fe2O3, or their mixtures) with controlled dimensions using the single-reactor synthesis, which involves the vacuum-controlled formation of Fe(III) alkanoates. It was

• -VI) and diphenyl (МТ-І). Electron diffraction patterns of (a) TMO-І, (b) TMU-IV, and (c) TMU-V samples. X-ray diffraction patterns of (1) Fe3O4 standard (JCPDS No. 88-315; mean crystallites size of 11 nm) [1], (2) TMU-V, (3) MT-VI, (4) TMO-І, and (5) γ-Fe2O3 standard (JCPDS No.00-039-1346) [36][37

Non-stoichiometric magnetite as catalyst for the photocatalytic degradation of phenol and 2,6-dibromo-4-methylphenol – a new approach in water treatment

• Joanna Kisała,
• Anna Tomaszewska and
• Przemysław Kolek

Beilstein J. Nanotechnol. 2022, 13, 1531–1540, doi:10.3762/bjnano.13.126

• as the parameter x = Fe2+/Fe3+) can range from 0.5 (stoichiometric magnetite Fe(III)tet[Fe(II),Fe(III)]octO4) to 0 (completely oxidized; maghemite, γ-Fe2O3) [24]. A magnetite with x values in the range of 0 < x < 0.5 is defined as non-stoichiometric or partially oxidized magnetite. Stoichiometric

Solar-light-driven LaFe_xNi_1−xO₃ perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants

• Chao-Wei Huang,
• Shu-Yu Hsu,
• Jun-Han Lin,
• Yun Jhou,
• Wei-Yu Chen,
• Kun-Yi Andrew Lin,
• Yu-Tang Lin and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79

• materials. On the other hand, the XRD of LaFeO3-800 indicated the appearance of Fe2O3 at 2θ peaks of 32.9°, 38.3°, 47.3° (JCPDS Card #39-0238) and La2O3 at 2θ peaks of 25.3°, 52.0°, 54.1° (JCPDS Card #40-1281). Especially, the peak of 32.9° for LaFeO3-800 was much clearer than that of LaFeO3-700, suggesting

• that the calcination temperature was too high and caused the formation of Fe2O3. In addition, samples with various doping proportions of Fe/Ni, including 0.1/0.9, 0.3/0.7, 0.5/0.5, 0.7/0.3, and 0.9/0.1 were synthesized. The pH value was adjusted at 0 during synthesis, and the calcination temperature

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

• Irena Mihailova,
• Vjaceslavs Gerbreders,
• Marina Krasovska,
• Eriks Sledevskis,
• Valdis Mizers,
• Andrejs Bulanovs and
• Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

• ., Co2O3, TiO2, NiO, and Fe2O3). SEM images of copper oxide samples. (a, b) General view and morphology of a CuO film obtained by thermal oxidation on a copper wire; (c, d) general view of a copper wire with CuO layer obtained by chemical hydrothermal oxidation; (e) 3D flower-like nanostructured formations

Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis

• Zahra Nabizadeh,
• Mahmoud Nasrollahzadeh,
• Hamed Daemi,
• Mohamadreza Baghaban Eslaminejad,
• Ali Akbar Shabani,
• Mehdi Dadashpour,
• Majid Mirmohammadkhani and
• Davood Nasrabadi

Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31

• alcohol) (PVA), nanoscale hydroxyapatite, and magnetic NPs (Fe2O3) has also shown that the incorporation of NPs enhances the mechanical properties of the scaffold and regulates the behavior of cells seeded in the nanocomposites [61]. A magnetic hydrogel-based nanocomposite can provide a promising scaffold

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

• Senuri Kumarage,
• Imalka Munaweera and
• Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

• membranes due to the high surface area for particle adsorption. The hybridization of the electrospun membranes with additives improved the properties compared to pristine polymer membranes. GO, Fe2O3 and other metal oxides, HNTs, activated carbons, and zeolite are some of the frequently used additives for

Theranostic potential of self-luminescent branched polyethyleneimine-coated superparamagnetic iron oxide nanoparticles

• Rouhollah Khodadust,
• Ozlem Unal and
• Havva Yagci Acar

Beilstein J. Nanotechnol. 2022, 13, 82–95, doi:10.3762/bjnano.13.6

• sensitivity the results obtained from TEM are usually more reliable [52]. The XRD pattern of SPION@bPEI synthesized in situ indicates a crystalline magnetite structure composed of both magnetite (Fe3O4) and maghemite (Fe2O3), including nanoparticles (Figure 1c). Considering only XRD patterns it would be

Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy

• Kerstin Neuhaus,
• Christina Schmidt,
• Liudmila Fischer,
• Wilhelm Albert Meulenberg,
• Ke Ran,
• Joachim Mayer and
• Stefan Baumann

Beilstein J. Nanotechnol. 2021, 12, 1380–1391, doi:10.3762/bjnano.12.102

• Commercial powders of Ce0.8Sm0.2O2−δ (CSO, Kceracell, Korea), Fe2O3 and Co3O4 (Sigma-Aldrich, Germany) were used for solid-state reactive sintering. Respective amounts of powders were weighed for nominal CSO-FeCo2O4 compositions with a weight percent ratio of 60:40. The powder mixture was ball milled in

Morphology-driven gas sensing by fabricated fractals: A review

• Vishal Kamathe and
• Rupali Nagar

Beilstein J. Nanotechnol. 2021, 12, 1187–1208, doi:10.3762/bjnano.12.88

• -Fe2O3 fractal crystals by a cost-effective and eco-friendly microwave method [74]. Figure 13 shows SEM images of different hematite crystals obtained by varying precursor concentrations and additives. A dendritic particle structure with a middle stem of 3.5 µm and secondary branches of ca. 1 µm to 250

• permission from Elsevier. This content is not subject to CC BY 4.0. Hematite fractals. SEM images of (a) dendrites, (b) nanocubes, (c) rhombohedra, and (d) spindles of α-Fe2O3. Figure 13a–d was reprinted from [74], Procedia Engineering, vol. 120, by G. Bailly; J. Rossignol; B. de Fonseca; P. Pribetich; D