Article
Engineering, Environmental
Preeti Tewatia, Vijay Kumar, Sharmistha Samota, Sonal Singhal, Anupama Kaushik
Summary: This study developed a sensing and annihilation system for arsenite ions in water using wheat-straw cellulose, which exhibited strong affinity and high adsorption capacity for As(III) ions, with low detection limit and excellent reusability and stability. BF@CFs showed promising potential as a dual functional sensor and adsorbent for arsenic removal in water bodies in northern India.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Xiaoxiao Huang, Gang Yang
Summary: Pollution control of As(III), a naturally occurring carcinogen, is gaining global attention. TiO2 shows promise for controlling As(III) pollution, and the formation of As oxyanions enhances As(III) adsorption and immobilization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Daohu Sheng, Xintong Ying, Rui Li, Siyao Cheng, Cheng Zhang, Wei Dong, Xihao Pan
Summary: In this study, we successfully synthesized a novel functional magnetic nanocomposite material for efficient tetracycline removal. The material exhibited excellent stability, reusability, and high tetracycline adsorption capacity under various experimental conditions.
Article
Biotechnology & Applied Microbiology
Md. Nahid Pervez, Dandan Fu, Xiangyang Wang, Qitong Bao, Tao Yu, Vincenzo Naddeo, Haoting Tian, Chengjin Cao, Yaping Zhao
Summary: A novel 3D bifunctional nanocomposite was prepared for arsenic removal, showing remarkable arsenic adsorption capacity and oxidation potential for efficient removal of arsenic pollutants in water systems.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Janeala J. Morsby, Rebekah L. Thimes, Jacob E. Olson, Hannah H. McGarraugh, Jason N. Payne, Jon P. Camden, Bradley D. Smith
Summary: This study finds that 2-mercaptopyridine-carbonitriles can serve as highly effective SERS reporter molecules that can be captured by silver or gold nanoparticles, providing intense SERS spectra with high sensitivity and functional group selectivity. It also demonstrates the potential use of these molecules in enzyme sensing, specifically in detecting beta-glucosidase activity and inhibition.
Article
Engineering, Environmental
Fritz Ndumbe Lyonga, Seung-Hee Hong, Eun-Ji Cho, Jin-Kyu Kang, Chang-Gu Lee, Seong-Jik Park
Summary: Biochar derived from food waste was modified with Fe to enhance its adsorption capacity for As(III). The optimized Fe-impregnated food waste biochar (FeFWB) showed superior adsorption performance at lower temperature, Fe concentration, and pH levels, demonstrating high adaptability under different conditions.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Environmental Sciences
Bing Song, Zejian Zhi, Qiang Zhou, Di Wu, Lei Yu, Feng Gong, Ying Yin, Fanyue Meng, Chengming Li, Zhiliang Chen, Min Song
Summary: This study synthesized a hexagonal Fe-Ce bimetal oxide nanosheets with high catalytic activity to improve the adsorption efficiency of iron oxides for arsenic removal. The experimental results showed that the nanosheets had a high adsorption capacity for arsenic and achieved equilibrium in a short period of time. The study also proposed a new insight into the oxidation and complexation mechanism of arsenic.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Azam Alsadat Tabatabaiee Bafrooee, Elham Moniri, Homayon Ahmad Panahi, Mahsasadat Miralinaghi, Amir Hesam Hasani
Summary: A magnetic graphene oxide nanocomposite functionalized with ethylenediamine (Fe3O4@GO-EDA) was synthesized and found to be an efficient nanoadsorbent for As(III) decontamination, with good adsorption capacity and recyclability. The presence of co-existing ions had some effect on arsenic removal, but the Fe3O4@GO-EDA nanocomposite still demonstrated high efficiency in removing As(III).
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Environmental Sciences
Yaswanth K. Penke, Amit K. Yadav, Iram Malik, Alekha Tyagi, Janakarajan Ramkumar, Kamal K. Kar
Summary: Understanding mechanistic insights in environmental remediation and mitigation systems has garnered increased attention. The study confirms the effectiveness of CAF-rGO hybrid in arsenic adsorption/electrosorption mechanisms, with potential implications for arsenic mitigation applications.
Article
Engineering, Environmental
Yuanfeng Wei, Weijian Yang, Zhimin Wang, Kai Yin, Tao Chen, Chengbin Liu
Summary: Iron oxide-modified biochar fibers integrated with H2O2 and Hydroxylamine were used to efficiently oxidize and remove As(III) from water. The system showed a removal efficiency of 98.93% and could effectively increase treatment volume to meet drinking water standards. The introduction of Hydroxylamine played a crucial role in promoting the removal of As(III) by reducing surface Fe(III) of the biochar fibers.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Manikandan Rajendran, Selvaraj Barathi, Maryium Sajjad, Gadah Albasher, Jintae Lee
Summary: Arsenic remediation is a serious global issue. Carbon-encapsulated Fe nanoparticle composites (Fe/C CNPs) were synthesized and their adsorption behavior was investigated. The results suggest that Fe/C CNPs can be used for the remediation of arsenic-contaminated water.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Zhuoyao Fang, Kaizhen Zhang, Xiaolin Zhang, Bingcai Pan
Summary: The study introduced a novel nanocomposite material HZO@N201 for efficient removal of methylated arsenic species MMA and DMA from water, showing high adsorption capacity and stability. The material can be regenerated for cyclic use, with superior performance compared to the commercially available nanocomposite HZO@D201.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jinming Hua
Summary: In this study, gold nanoparticles and ZnO-decorated zirconia composites were synthesized and used as adsorbents for arsenic removal from water. The optimized composite exhibited enhanced adsorption capacity for low concentrations of arsenic.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Biochemistry & Molecular Biology
Jun Hou, Xueying Gong, Yinjie Zhong, Chen Cheng, Mengxin Liu, Zijun Yang
Summary: A chitosan-based bio-adsorbent (DCTS-TA) was successfully synthesized for the recovery of Au(III) from wastewater, which can increase resource utilization and reduce environmental pollution. The maximum adsorption capacity for Au(III) was 1146.59 mg/g at pH 3.0, fitting well with the Langmuir model. The adsorption process involved electrostatic interaction, chelation, and redox reaction, and the presence of other metal ions did not significantly affect the adsorption efficiency.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Somayeh Asadi Haris, Shadab Dabagh, Hamidreza Mollasalehi, Yavuz Nuri Ertas
Summary: Superparamagnetic iron oxide nanoparticles (SPIONs) were synthesized and used for efficient removal of arsenite (As(III)). The optimum removal percentages for SPIONs and SPIONs-Alg were 99% and 90%, respectively, at pH 7, 30 degrees C, and 6.5 mg/L As (III) concentration. The Langmuir isotherm model fitted the equilibrium data better than Freundlich. The adsorption kinetic data showed a better fit to the pseudo-second-order kinetic model. SPIONs-Alg could be easily collected, recovered, and reused for multiple cycles with high sorption efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Statistics & Probability
C. Mante, S. Cornu, D. Borschneck, C. Mocuta, R. van den Bogaert
Summary: In this study, a method for detecting the Guttman effect in a disjunctive table is proposed. By reusing the chi-squared independence test method, a two-step approach is introduced to determine the presence and degree of the Guttman effect. The method is tested on both artificial and real data, with successful results.
JOURNAL OF APPLIED STATISTICS
(2022)
Article
Environmental Sciences
Till Fehlauer, Blanche Collin, Bernard Angeletti, Catherine Santaella, Cedric Dentant, Perrine Chaurand, Clement Levard, Cedric Gonneau, Daniel Borschneck, Jerome Rose
Summary: This study analyzed the transfer of certain chemical elements from soil to plants, shedding light on their uptake pathways. The study site was in Jas Roux, France, where different plant species showed species-dependent characteristics in elemental uptake strategies.
Article
Multidisciplinary Sciences
Till Fehlauer, Blanche Collin, Bernard Angeletti, Mohammad Mustafa Negahi, Cedric Dentant, Perrine Chaurand, Claire Lallemand, Clement Levard, Jerome Rose
Summary: This study analyzed the accumulation and uptake pathway of yttrium (Y) in Saxifraga paniculata and found that Y was distributed similarly in commercial and wild specimens, mainly in the epidermis region of the roots. Wild individuals accumulated more Y than commercial ones, and consistent colocalization of aluminum (Al), iron (Fe), Y, and cerium (Ce) was observed in all plant parts except for the hydathodes, indicating a shared translocation pathway possibly through the formation of stable organic complexes.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jeireimy Domergue, Pawel Guinard, Magali Douillard, Jacques Pecaut, Sarah Hostachy, Olivier Proux, Colette Lebrun, Alan Le Goff, Pascale Maldivi, Carole Duboc, Pascale Delangle
Summary: To control the cellular level of reactive oxygen species (ROS) and prevent pathologies related to oxidative stress, designing antioxidants based on natural enzymes involved in ROS degradation is a promising strategy. In this study, Ni complexes with tripeptides derived from the ATCUN motif were synthesized to mimic the active site of nickel superoxide dismutase (NiSOD). Six different Ni(II) complexes with various coordination modes were characterized and found to exhibit SOD-like activity. The complexes with equilibrium between N-coordination and S-coordination showed the highest efficiency, indicating the beneficial effect of a nearby proton relay. This study also demonstrated that two bound thiolates and two amidates are not prerequisites for the catalytic activity of NiSOD mimics.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sabah El Mohammad, Olivier Proux, Antonio Aguilar, Jean-Louis Hazemann, Christele Legens, Celine Chizallet, Kim Larmier
Summary: The formation of tungstate-mannose complexes in aqueous solution was characterized using a combination of experimental and theoretical techniques. The structures of the complexes were determined using NMR and X-ray absorption spectroscopy. The study identified new complexes and provided insights into the structure-reactivity relationships of these metal-sugar complexes.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
S. Botticelli, R. Chiaraluce, V. Consalvi, G. La Penna, A. Pasquo, M. Petrosino, O. Proux, G. C. Rossi, F. Stellato, S. Morante
Summary: In this study, it is demonstrated that Zn2+ ions are involved in the mechanism of SARS-CoV-2 virus evading immune response mediated by the BST2-tetherin host protein, supported by sequence analysis, molecular dynamics simulations, and X-ray absorption experiments.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Electrochemistry
Ana Marija Damjanovic, Anna Theresa Sophie Freiberg, Armin Siebel, Burak Koyutuerk, Davide Menga, Kevin Krempl, Pankaj Madkikar, Olivier Proux, Hubert Andreas Gasteiger, Michele Piana
Summary: Ex situ and operando X-ray absorption spectroscopy (XAS) were used to investigate the structure and degradation mechanism of Fe-based catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). The results showed that Fe3+ was incorporated in the ZrO2 structure and significant presence of Fe-N-C-type structures was excluded in the Fe0.07Zr0.93O2-delta/C catalyst. The aging process led to the formation of oxidic Fe clusters and Fe demetalation from the ZrO2 structure. The faster aging of Fe0.07Zr0.93O2-delta compared to Fe-N-C was attributed to improved mass transport to/from active sites.
Article
Biochemistry & Molecular Biology
Benoit Toubhans, Nour Alkafri, Marcos Quintela, David W. James, Caroline Bissardon, Salvatore Gazze, Franziska Knodel, Olivier Proux, Alexandra T. Gourlan, Philipp Rathert, Sylvain Bohic, Deyarina Gonzalez, Lewis W. Francis, Laurent Charlet, R. Steven Conlan
Summary: At physiological levels, selenium is involved in redox reactions and has potential anti-cancer effects. Selenium nanoparticles, coated with serum albumin or chitosan, enhance biocompatibility and bioavailability. In this study, selenium nanoparticles were found to regulate histone methylation in ovarian cancer cell models, leading to increased histone methylation at specific sites. This novel role of selenium in histone methylation is mediated by a decrease in S-adenosylhomocysteine, an endogenous inhibitor of lysine methyltransferases. These findings broaden our understanding of the action of selenium nanoparticles in cancer therapy and other applications.
Article
Chemistry, Multidisciplinary
Enrico Falcone, Germano Nobili, Michael Okafor, Olivier Proux, Giancarlo Rossi, Silvia Morante, Peter Faller, Francesco Stellato
Summary: The redox activity of Cu ions bound to the amyloid-beta peptide is implicated in oxidative stress in Alzheimer's disease. A low-populated intermediate state, capable of binding Cu in both oxidation states, has been proposed to explain the efficient redox cycling between Cu(II)-Aβ and Cu(I)-Aβ resting states. By using X-ray induced photoreduction and thermal relaxation, a partially reduced Cu-Aβ species different from the resting states was trapped and characterized by X-ray Absorption Spectroscopy (XAS). This approach provides the first direct spectroscopic characterization of an intermediate state.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Chemistry, Multidisciplinary
Jerome Rose, Perrine Chaurand, Cedric Dentant, Bernard Angeletti, Daniel Borschneck, Isabelle Kieffer, Olivier Proux, Richard Bonet, Melanie Auffan, Clement Levard, Till Fehlauer, Blanche Collin, Emmanuel Doelsch
Summary: Inorganic contaminants released from mining activities can have a negative impact on the surrounding ecosystems. Sulfuric acid, produced after the oxidation of primary sulfide minerals in ores, plays a significant role in the release of metals. However, secondary metal sulfates can form and control the fate of metals. Thallium (Tl), for example, can be trapped by Tl-jarosite and dorallcharite, secondary minerals found in Tl-rich sulfide deposits and mining areas. The study of the long-term behavior of Tl in soils at the Jas Roux site in France has provided new insights into the biogeochemical cycle of this metal.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Caroline Bissardon, Olivier Proux, Salvatore Andrea Gazze, Odile Filhol, Benoit Toubhans, Lucie Sauzeat, Sylvain Bouchet, Aled R. Lewis, Thierry Maffeis, Jean-Louis Hazemann, Sam Bayat, Peter Cloetens, R. Steven Conlan, Laurent Charlet, Sylvain Bohic
Summary: This study investigated the effects of sub-toxic concentrations of functionalized selenium nanoparticles on prostate cancer cells and their intracellular localization and fate. The results showed that monodisperse selenium nanoparticles capped with bovine serum albumin could slow down the migration capacity of aggressive prostate cancer cells compared to polydisperse selenium nanoparticles capped with chitosan. The nanoparticles were found to interact with mitochondria in the cells. These findings provide new insight for further research on the cytotoxic mechanisms of selenium nanoparticles.