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42 Results Found

  • Article
  • Open Access
5 Citations
1,867 Views
16 Pages

28 February 2024

This study deals with the synthesis and characterization of a series of hybrid photocatalysts consisting of different loadings of TiO2, Cd, and Fe on mesoporous SBA-15 material. The prepared samples were characterized by Fourier transform infrared sp...

  • Article
  • Open Access
6 Citations
3,344 Views
12 Pages

Low-Temperature Toluene Oxidation on Fe-Containing Modified SBA-15 Materials

  • Ivalina Trendafilova,
  • Manuel Ojeda,
  • John M. Andresen,
  • Alenka Ristić,
  • Momtchil Dimitrov,
  • Nataša Novak Tušar,
  • Genoveva Atanasova and
  • Margarita Popova

26 December 2022

Transition metals as catalysts for total VOC oxidation at low temperatures (150–280 °C) are a big challenge nowadays. Therefore, iron-modified SBA-15, AlSBA-15, and ZrSBA-15 materials with 0.5 to 5.0 wt.% Fe loading were prepared and tested...

  • Article
  • Open Access
1,359 Views
13 Pages

Effect of the Fe2O3/SBA-15 Surface on Inducing Ozone Decomposition and Mass Transfer in Water

  • Lei Yuan,
  • Lele Fang,
  • Jizhou Zhang,
  • Pengwei Yan and
  • Zhonglin Chen

12 September 2024

Catalytic ozonation with metal oxides is of interest for advanced water treatment technology. The amount of active oxygen-containing radicals produced is a primary objective of this process. Fe2O3 is a widely used catalyst because of its high perform...

  • Article
  • Open Access
1 Citations
1,373 Views
18 Pages

4 February 2025

The extensive release of water contaminated with lead (Pb(II)) and antimony (Sb(V)) constitutes a serious threat to the human living environment and public health, necessitating immediate attention. In this study, a novel MnFe@SBA composite was synth...

  • Article
  • Open Access
20 Citations
3,552 Views
15 Pages

28 September 2021

SBA-Pr-Is-TAP was synthesized via functionalization of SBA-15. The synthesized hybrid nanomaterial was characterized by various techniques including FT-IR, TGA, XRD, SEM, and BET. SBA-Pr-Is-TAP could precisely bind Fe3+ and Cr2O72− ions among a range...

  • Article
  • Open Access
16 Citations
3,511 Views
23 Pages

Selective Catalytic Reduction of NOx by CO over Cu(Fe)/SBA-15 Catalysts: Effects of the Metal Loading on the Catalytic Activity

  • Monique S. Souza,
  • Antonio J. Martins,
  • Jackson Anderson S. Ribeiro,
  • Adriana Campos,
  • Alcineia C. Oliveira,
  • Raí F. Jucá,
  • Gilberto D. Saraiva,
  • Marco Antonio M. Torres,
  • Enrique Rodríguez-Castellón and
  • Rinaldo S. Araujo

4 March 2023

Mesoporous Cu(Fe)/SBA-15 catalysts were prepared with distinct metal loadings of ca. 2–10 wt.%. A detailed set of characterizations using X-ray diffraction (XRD), electron paramagnetic resonance (EPR), transmission electron microscopy (TEM), sc...

  • Article
  • Open Access
1 Citations
2,392 Views
12 Pages

24 April 2022

A nanocomposite NiPt/5LSBA-160 catalyst comprised of highly dispersed Ni nanoparticles contacting intimately with Pt over novel mesoporous LaFeO3-SBA-15-CTA support with a high specific surface area (SSA) was successfully developed for the dry reform...

  • Article
  • Open Access
8 Citations
4,467 Views
14 Pages

23 October 2017

We show a novel chemical vapour deposition (CVD) approach, in which the large-scale fabrication of ferromagnetically-filled cm-scale buckypapers is achieved through the deposition of a mesoporous supported catalyst (SBA-16) on a silicon substrate. We...

  • Article
  • Open Access
16 Citations
4,219 Views
19 Pages

11 March 2023

Hexagonal SBA-15 mesoporous material was used as a catalytic template for impregnation, with the transition metals Fe, Co, and Ni as catalysts for chemical transformation. Nitrogen adsorption/desorption isotherms, scanning electron microscopy, and tr...

  • Article
  • Open Access
36 Citations
3,380 Views
13 Pages

11 September 2021

Lead ion (Pb2+) has high toxicity and brings great harm to human body. It is very important to find an effective method to address lead ion pollution. In this work, amino functionalized CoFe2O4/SBA–15 nanocomposite (NH2–CoFe2O4/SBA–15) was prepared f...

  • Article
  • Open Access
6 Citations
3,401 Views
15 Pages

The price and scarcity of platinum has driven up the demand for non-precious metal catalysts such as Fe-N-C. In this study, the effects of phosphoric acid (PA) activation and phosphorus doping were investigated using Fe-N-C catalysts prepared using S...

  • Article
  • Open Access
7 Citations
4,153 Views
11 Pages

Fe-Containing MOFs as Seeds for the Preparation of Highly Active Fe/Al-SBA-15 Catalysts in the N-Alkylation of Aniline

  • Sareena Mhadmhan,
  • Maria Dolores Marquez-Medina,
  • Antonio A. Romero,
  • Prasert Reubroycharoen and
  • Rafael Luque

24 July 2019

We have successfully incorporated iron species into mesoporous aluminosilicates (Al-SBA-15) using a simple mechanochemical milling method. The catalysts were characterized by nitrogen physisorption, inductively coupled plasma mass spectrometry (ICP-M...

  • Article
  • Open Access
3 Citations
3,849 Views
16 Pages

Reduction of Typical Diesel NOx Emissions by SCR-NH3 Using Metal-Exchanged Natural Zeolite and SBA-15 Catalysts

  • Amanda Pontes Maia Pires Alcantara,
  • Mona Lisa Moura de Oliveira,
  • Jesuína Cássia Santiago de Araújo,
  • Rinaldo dos Santos Araújo,
  • Rita Karolinny Chaves de Lima,
  • André Valente Bueno,
  • Maria Eugênia Vieira da Silva,
  • Paulo Alexandre Costa Rocha and
  • Enrique Rodríguez-Castellón

30 June 2023

In this work, the catalytic performance of clinoptilolite (CLIN) and SBA-15 catalysts, doped with Fe and Cu, was evaluated in the selective catalytic reduction of NO using NH3 as a reducing agent (SCR-NH3). Both Cu-CLIN and Fe-CLIN were obtained by i...

  • Article
  • Open Access
9 Citations
4,518 Views
24 Pages

Synthesis of Fe2SiO4-Fe7Co3 Nanocomposite Dispersed in the Mesoporous SBA-15: Application as Magnetically Separable Adsorbent

  • Monickarla Teixeira Pegado da Silva,
  • Felipe Fernandes Barbosa,
  • Marco Antonio Morales Torre,
  • Jhonny Villarroel-Rocha,
  • Karim Sapag,
  • Sibele B. C. Pergher and
  • Tiago Pinheiro Braga

24 February 2020

The mixture containing alloy and oxide with iron-based phases has shown interesting properties compared to the isolated species and the synergy between the phases has shown positive effect on dye adsorption. This paper describes the synthesis of Fe2S...

  • Article
  • Open Access
17 Citations
9,337 Views
15 Pages

Active Iron Sites of Disordered Mesoporous Silica Catalyst FeKIL-2 in the Oxidation of Volatile Organic Compounds (VOC)

  • Mojca Rangus,
  • Matjaž Mazaj,
  • Goran Dražić,
  • Margarita Popova and
  • Nataša Novak Tušar

30 May 2014

Iron-functionalized disordered mesoporous silica (FeKIL-2) is a promising, environmentally friendly, cost-effective and highly efficient catalyst for the elimination of volatile organic compounds (VOCs) from polluted air via catalytic oxidation. In t...

  • Article
  • Open Access
5 Citations
2,975 Views
20 Pages

4 May 2023

The use of carbide catalysts in Fischer–Tropsch synthesis (FTS) is an active area of research, as carbide phases have been shown to improve the stability and performance of catalysts in this reaction. This study compared the catalytic activity...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,154 Views
19 Pages

Chitosan-Modified SBA-15 as a Support for Transition Metal Catalysts in Cyclohexane Oxidation and Photocatalytic Hydrogen Evolution

  • Assemgul S. Auyezkhanova,
  • Alima K. Zharmagambetova,
  • Eldar T. Talgatov,
  • Aigul I. Jumekeyeva,
  • Sandugash N. Akhmetova,
  • Zhannur K. Myltykbayeva,
  • Imge Kalkan,
  • Atıf Koca,
  • Akzhol A. Naizabayev and
  • Aigul T. Zamanbekova

3 July 2025

This work aims to study the catalytic properties of Fe, Cr, and Cu catalysts deposited on chitosan–silica (SBA-15) composites in liquid phase oxidation of cyclohexane (CH) with H2O2 and photocatalytic hydrogen evolution reaction. The catalysts...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,310 Views
16 Pages

Transformation of Furfural-Acetone Condensation Adduct over Mo/SBA-15 Catalysts under Atmospheric Pressure

  • Camila A. Teles,
  • Carmen Ciotonea,
  • Sébastien Royer and
  • Frédéric Richard

5 September 2023

The transformation of the furfural-acetone condensation adduct (FAc) was investigated under atmospheric pressure at 300 °C over a series of molybdenum supported on SBA-15 doped with different acid/oxophilic species (Zr, Fe and Al). The FAc underw...

  • Article
  • Open Access
5 Citations
4,511 Views
23 Pages

Visible Light Photo-Fenton with Hybrid Activated Carbon and Metal Ferrites for Efficient Treatment of Methyl Orange (Azo Dye)

  • Malak Hamieh,
  • Nabil Tabaja,
  • Khaled Chawraba,
  • Zeinab Hamie,
  • Mohammad Hammoud,
  • Sami Tlais,
  • Tayssir Hamieh and
  • Joumana Toufaily

15 April 2025

Ensuring effective water purification is essential for addressing freshwater scarcity and achieving the United Nations Sustainable Development Goals (SDGs). An efficient hybrid mixture, composed of FeCr quantum dots doped into mesoporous silica SBA-1...

  • Article
  • Open Access
5 Citations
3,689 Views
15 Pages

A Catechol-Meter Based on Conventional Personal Glucose Meter for Portable Detection of Tyrosinase and Sodium Benzoate

  • Tao Tian,
  • Wei-Yi Zhang,
  • Hang-Yu Zhou,
  • Li-Jing Peng,
  • Xi Zhou,
  • Hao Zhang and
  • Feng-Qing Yang

27 November 2022

In this study, the personal glucose meter (PGM) was first used as a fast and user-friendly meter for analyzing catechol (CA) based on the reduction of the mediator K3[Fe(CN)6] to K4[Fe(CN)6] in the glucose test strip. Then, an easy, low-cost, and con...

  • Article
  • Open Access
23 Citations
4,747 Views
14 Pages

21 September 2020

A series of Ni-Fe/SBA-15 catalysts was prepared and tested for the catalytic hydrogenation of levulinic acid to γ-valerolactone, adopting methanol as the only hydrogen donor, and investigating the synergism between Fe and Ni, both supported on...

  • Article
  • Open Access
12 Citations
6,867 Views
12 Pages

Development of Lectin-Linked Immunomagnetic Separation for the Detection of Hepatitis A Virus

  • Sang-Mu Ko,
  • Joseph Kwon,
  • Bipin Vaidya,
  • Jong Soon Choi,
  • Hee-Min Lee,
  • Myung-Joo Oh,
  • Hyeun-Jong Bae,
  • Se-Young Cho,
  • Kyung-Seo Oh and
  • Duwoon Kim

4 March 2014

The accuracy and sensitivity of PCR-based methods for detection of hepatitis A virus (HAV) are dependent on the methods used to separate and concentrate the HAV from the infected cells. The pH and ionic strength affect the binding affinity of the vir...

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,066 Views
11 Pages

Enriching SO42− Immobilization on α-Fe2O3 via Spatial Confinement for Robust NH3-SCR Denitration

  • Zhiwen Gu,
  • Lijun Cheng,
  • Chong Tan,
  • Songil Sin,
  • Chunkai Huang and
  • Changjin Tang

1 September 2022

The application of iron oxide to NH3-SCR is attractive but largely hindered by its poor acid properties, and surface sulfation is proven to be a prominent way of enhancing the acidity. As such, the method of enriching the sulfate species on iron oxid...

  • Article
  • Open Access
4 Citations
2,368 Views
26 Pages

27 May 2022

Crystal violet (CV), a triphenylmethane dye, is widely used in the textile, printing, paper, leather, and cosmetics industries. However, due to its higher chemical stability and lower biodegradability, CV has teratogenic and carcinogenic toxic effect...

  • Article
  • Open Access
5 Citations
2,604 Views
22 Pages

19 July 2022

Excessive concentrations of nitrate (NO3-N) in water lead to the deterioration of water quality, reducing biodiversity and destroying ecosystems. Therefore, the present study investigated NO3-N removal from simulated wastewater by nanoscale zero-vale...

  • Article
  • Open Access
25 Citations
9,166 Views
9 Pages

12 July 2016

Supported iron oxide nanoparticles on mesoporous materials (FeNP@SBA-15) have been successfully utilized in the esterification of a variety carboxylic acids including aromatic, aliphatic, and long-chain carboxylic acids under convenient reaction cond...

  • Feature Paper
  • Article
  • Open Access
8 Citations
5,649 Views
25 Pages

CO Oxidation at 20 °C on Au Catalysts Supported on Mesoporous Silica: Effects of Support Structural Properties and Modifiers

  • Abigail Moreno-Martell,
  • Barbara Pawelec,
  • Rufino Nava,
  • Noelia Mota,
  • Luis Escamilla-Perea,
  • Rufino M. Navarro and
  • Jose L.G. Fierro

4 June 2018

In this work we report the effects of support structural properties and its modification with some metal oxides modifiers on the catalytic behavior of Au catalysts in the total CO oxidation at 20 °C. Au catalysts were supported on mesoporous silica m...

  • Article
  • Open Access
4 Citations
1,678 Views
13 Pages

Multilayer Epitaxial Heterostructures with Multi-Component III–V:Fe Magnetic Semiconductors

  • Alexey V. Kudrin,
  • Valeri P. Lesnikov,
  • Ruslan N. Kriukov,
  • Yuri A. Danilov,
  • Mikhail V. Dorokhin,
  • Anastasia A. Yakovleva,
  • Nataliya Yu. Tabachkova and
  • Nikolai A. Sobolev

28 August 2023

Three-layer structures based on various multi-component films of III–V semiconductors heavily doped with Fe were grown using the pulsed laser sputtering of InSb, GaSb, InAs, GaAs and Fe solid targets. The structures comprising these InAsSb:Fe,...

  • Article
  • Open Access
4 Citations
2,948 Views
16 Pages

Design and Evaluation of Pegylated Large 3D Pore Ferrisilicate as a Potential Insulin Protein Therapy to Treat Diabetic Mellitus

  • B. Rabindran Jermy,
  • Mohammed Salahuddin,
  • Gazali Tanimu,
  • Hatim Dafalla,
  • Sarah Almofty and
  • Vijaya Ravinayagam

An iron-based SBA-16 mesoporous silica (ferrisilicate) with a large surface area and three-dimensional (3D) pores is explored as a potential insulin delivery vehicle with improved encapsulation and loading efficiency. Fe was incorporated into a frame...

  • Article
  • Open Access
21 Citations
7,073 Views
18 Pages

Advanced Three-Dimensional Finite Element Modeling of a Slow Landslide through the Exploitation of DInSAR Measurements and in Situ Surveys

  • Vincenzo De Novellis,
  • Raffaele Castaldo,
  • Piernicola Lollino,
  • Michele Manunta and
  • Pietro Tizzani

19 August 2016

In this paper, we propose an advanced methodology to perform three-dimensional (3D) Finite Element (FE) modeling to investigate the kinematical evolution of a slow landslide phenomenon. Our approach benefits from the effective integration of the avai...

  • Article
  • Open Access
3 Citations
1,426 Views
21 Pages

10 August 2025

Soil co-contamination with antimony (Sb) and arsenic (As) presents significant ecological and human health risks, demanding effective stabilization solutions. This study evaluated iron–manganese-modified hydrochar (FMHC) for synergistic Sb-As stabili...

  • Article
  • Open Access
8 Citations
3,524 Views
12 Pages

A Hierarchically Ordered Mesoporous-Carbon-Supported Iron Sulfide Anode for High-Rate Na-Ion Storage

  • Anupriya K. Haridas,
  • Natarajan Angulakshmi,
  • Arul Manuel Stephan,
  • Younki Lee and
  • Jou-Hyeon Ahn

18 July 2021

Sodium-ion batteries (SIBs) are promising alternatives to lithium-based energy storage devices for large-scale applications, but conventional lithium-ion battery anode materials do not provide adequate reversible Na-ion storage. In contrast, conversi...

  • Article
  • Open Access
12 Citations
3,913 Views
12 Pages

1 January 2020

Mono and bimetallic Mn–Fe catalysts supported on different materials were prepared and their catalytic performance in the NH3–SCR of NOx was investigated. It was shown that Mn and Fe have a synergic effect that enhances the activity at lo...

  • Article
  • Open Access
37 Citations
5,536 Views
11 Pages

Fenton and Photo-Fenton Nanocatalysts Revisited from the Perspective of Life Cycle Assessment

  • Sara Feijoo,
  • Jorge González-Rodríguez,
  • Lucía Fernández,
  • Carlos Vázquez-Vázquez,
  • Gumersindo Feijoo and
  • María Teresa Moreira

24 December 2019

This study provides an overview of the environmental impacts associated with the production of different magnetic nanoparticles (NPs) based on magnetite (Fe3O4), with a potential use as heterogeneous Fenton or photo-Fenton catalysts in wastewater tre...

  • Article
  • Open Access
1 Citations
979 Views
15 Pages

Removal of Metal Ions in Spin-on Hardmask Using Functionalized Porous Silica Adsorbents

  • Won Kim,
  • Kiseok Lee,
  • Hyosik Kim,
  • Mingi Choi,
  • Suk-Koo Hong and
  • Ji Eun Lee

26 June 2025

The ongoing miniaturization of semiconductor devices necessitates continuous advancements in lithographic processes, which are critical for high-precision circuit formation. To prevent substrate damage during the etching step, a spin-on hardmask (SOH...

  • Article
  • Open Access
1,315 Views
17 Pages

5 February 2025

Nanoparticles of ZnFe2O4 and hematite with varied sizes and distributions were synthesized using the two-solvent method (cyclohexane, water) on SBA-15 silica batches. Calcination is performed in air at 700 °C (2 °C/min) with rapid quenching p...

  • Article
  • Open Access
7 Citations
2,435 Views
16 Pages

30 August 2022

Confinement effects for the magnetoresponsive ionic liquid 1-ethyl-3-methylimidazolium tetrachloroferrate(III), [C2mim]FeCl4, are explored from thermal, spectroscopic, and magnetic points of view. Placing the ionic liquid inside SBA-15 mesoporous sil...

  • Article
  • Open Access
17 Citations
4,471 Views
18 Pages

Reusable Fe3O4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II

  • Jorge González-Rodríguez,
  • Lucía Fernández,
  • Zulema Vargas-Osorio,
  • Carlos Vázquez-Vázquez,
  • Yolanda Piñeiro,
  • José Rivas,
  • Gumersindo Feijoo and
  • Maria Teresa Moreira

19 February 2021

Today, the presence of recalcitrant pollutants in wastewater, such as pharmaceuticals or other organic compounds, is one of the main obstacles to the widespread implementation of water reuse. In this context, the development of innovative processes f...

  • Article
  • Open Access
7 Citations
2,743 Views
11 Pages

7 June 2024

CO2 oxidative dehydrogenation of propane (CO2-ODHP), being not only favorable for olefin production but also beneficial for CO2 emission control, has recently attracted great attention. Here, a series of single metal (Cr) and bimetal (Zr, La, Fe) mod...

  • Article
  • Open Access
1 Citations
981 Views
20 Pages

Zoharite, (Ba,K)6 (Fe,Cu,Ni)25S27, and Gmalimite, K6□Fe2+24S27—New Djerfisherite Group Minerals from Gehlenite-Wollastonite Paralava, Hatrurim Complex, Israel

  • Irina O. Galuskina,
  • Biljana Krüger,
  • Evgeny V. Galuskin,
  • Hannes Krüger,
  • Yevgeny Vapnik,
  • Mikhail Murashko,
  • Kamila Banasik and
  • Atali A. Agakhanov

26 May 2025

Zoharite (IMA 2017-049), (Ba,K)6 (Fe,Cu,Ni)25S27, and gmalimite (IMA 2019-007), ideally K6□Fe2+24S27, are two new sulfides of the djerfisherite group. They were discovered in an unusual gehlenite–wollastonite paralava with pyrrhotite nodu...

  • Article
  • Open Access
2 Citations
1,660 Views
32 Pages

Defining and Optimising High-Fidelity Models for Accurate Inherent Strain Calculation in Laser Powder Bed Fusion

  • Iñaki Setien,
  • Michele Chiumenti,
  • Maria San Sebastian,
  • Manuel A. Caicedo and
  • Carlos A. Moreira

11 February 2025

Powder Bed Fusion–Laser Beam (PBF-LB) is a leading technique in metal additive manufacturing, yet it continues to face challenges related to residual stresses and distortions. The inherent strain method has emerged as a valuable predictive tool...

  • Review
  • Open Access
32 Citations
10,711 Views
20 Pages

15 October 2013

Gold nanoparticles, particularly with the particle size of 2–5 nm, have attracted increasing research attention during the past decades due to their surprisingly high activity in CO and volatile organic compounds (VOCs) oxidation at low temperatures....