Article
Chemistry, Physical
Haipeng Jiang, Hong Wan, Hairong Cui
Summary: It was found that imazamox, a type of imidazolinone herbicide, can chelate with Fe(II) in surface water to form imazamox-Fe(II) complex. The structure of the complex was determined using various analytical and spectroscopic methods, and the impact of imidazolinone herbicides on available ferrous iron in soil was discussed.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Cheng-Fei Li, Hai-Bo Tang, Jia-Wei Zhao, Gao-Ren Li
Summary: Fe doping is an efficient strategy for enhancing the catalytic performance in oxygen evolution reaction (OER), but the influence of Fe distribution on OER catalysis remains unclear. In this work, the relationship between atomically interfacial Fe and adjacent Ni activity in Fe-doped Ni(OH)2 with Fe/Ni atomic interfaces is investigated. The interfacial agglomerated Fe atoms can optimize the adjacent Ni electronic structure and distorted Ni/Fe-O octahedral structure, leading to obvious catalytic performance enhancement. These fabricated Fe-doped-Ni-(OH)2 with atomic interfaces show remarkable catalytic performance, providing new insights for the catalytic performance enhancement of OERs at an atomic level.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Applied
Xue Bai, Zhiyao Duan, Bing Nan, Liming Wang, Tianmi Tang, Jingqi Guan
Summary: This study presents a facile method for synthesizing ultrathin CoFe-based LDHs and reveals their high performance in OER. The Co site is identified as the main active center, and the doping of Fe accelerates the charge-transfer process. Surface Co sites are found to be the active centers for OER, while excessive subsurface Fe doping weakens OH* adsorption and increases the energy barrier of the rate-determining step.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Shihai Deng, Shuai Peng, Hun Hao Ngo, Sam Jin-An Oh, Zhifeng Hu, Hong Yao, Desheng Li
Summary: The accumulation of nitrous oxide (N2O) and nitrite (NO2-) in iron-driven autotrophic denitrification (ADN) processes remains unclear. This research systematically characterized the N2O/NO2- accumulation in Fe(0)-/Fe(II)-ADN processes through investigating the mechanisms, impact factors, and molecular biological characteristics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jie Wang, Yang Liu, Lei Feng, Yue Wang, Hui Jia
Summary: This study found that UV activation can enhance the hydrolysis of Fe(VI) and the flocculation of Fe(III), thus improving the removal of proteins and humic acid in natural water. UV activation promotes the generation of reactive intermediates, such as Fe(IV), and increases the production rate of superoxide radicals and hydroxyl radicals. Additionally, UV activation enhances the formation of hydrogen bonds and produces polar hydroxyl groups that bind with iron ions, leading to improved oxidation and flocculation of pollutants.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhi Yang, Hao Tan, Yu Qi, Shiyu Ma, Jilin Bai, Lifeng Liu, Dehua Xiong
Summary: This work successfully synthesized a nanostructured Fe-doped cobalt-based telluride catalyst with excellent oxygen evolution reaction (OER) performance. Fe doping was found to improve OER activity and long-term catalytic stability. This study provides a new approach for the preparation of bimetallic telluride catalysts with enhanced OER performance.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Toni Raabe, Heidi Rasser, Stefan Nottelmann, Alexander Gross, Hartmut Krause, Sven Kureti
Summary: This study investigates the mechanisms behind the consecutive adsorption of H2S and O2 on iron oxides/hydroxides, revealing dissociation of H2S at different surface sites and the consumption of the adsorbent. The findings suggest that complete regeneration of the iron substrates is almost impossible due to their substantial degradation, with partial conversion into sulfates and the deposition of sulfur as by-products.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Tianmi Tang, Shihui Jiao, Jingyi Han, Zhenlu Wang, Jingqi Guan
Summary: A NiFe0.5(OH)(x) catalyst with partially crystallized nickel-iron oxyhydroxides exhibits superior OER performance, with low OER overpotential and good durability. The energy barrier of NiFe0.5(OH)(x) is smaller than those of Ni(OH)(x) and Fe(OH)(x), indicating its efficient catalytic activity for the formation of *OOH intermediate in the OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Thi Ha My Pham, Tzu-Hsien Shen, Youngdon Ko, Liping Zhong, Loris Lombardo, Wen Luo, Satoshi Horike, Vasiliki Tileli, Andreas Zu''ttel
Summary: Ni- and Co-based catalysts with added Fe demonstrate promising activity in the oxygen evolution reaction (OER) during alkaline water electrolysis, with the presence of Fe in a certain quantity being crucial for their enhanced performance. The mechanism of Fe incorporation into a Co-based host was investigated, and the findings provide a comprehensive understanding of the role of Fe in Co-based electrocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Yuuki Mochizuki, Javzandolgor Bud, Jiaqian Liu, Miki Takahashi, Naoto Tsubouchi
Summary: This study investigated the physical properties and P adsorption performance of various iron hydroxides prepared by different methods. Among the iron hydroxides, those prepared with NH3/NH4Cl buffer (Fe(A)) showed the highest P adsorption performance. The specific surface area and OH species were found to be important factors affecting the adsorption performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Minjie Xu, Xianglin Liu, Guiyao Song, Yingying Cai, Bianfang Shi, Yitao Liu, Xiaoxu Ding, Zixu Yang, Pengfei Tian, Chenxi Cao, Jing Xu
Summary: In this study, the Fe-Al interaction in Na promoted Fe-Al catalysts was regulated by controlling the calcination temperature, leading to various compositions of iron oxide and iron carbides. The reactivity of different phases was investigated using multiple characterization methods and computational calculations. A correlation between the compositions of iron species and the activity of the catalyst for CO2 hydrogenation to olefins was established.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Duan Chen, Ji Qiu, Xing Chen, Shu Chen, Jie Zhang, Zhangquan Peng
Summary: We evaluated the intrinsic activity of Ni(OH)2, NiFe layered double hydroxides (LDHs), and NiFe-LDH with oxygen vacancies for oxygen evolution reaction (OER) using cavity microelectrodes (CMEs) with controllable mass loading. The number of active Ni sites (NNi-sites) was quantitatively correlated with OER current, showing that the introduction of Fe sites and vacancies increased the turnover frequency (TOF). Electrochemical surface area (ECSA) was also quantitatively correlated with NNi-sites, indicating a decrease in NNi-sites per unit ECSA (NNi-per-ECSA) due to the introduction of Fe sites and vacancies. Therefore, the difference in OER current per unit ECSA (JECSA) was reduced compared to TOF. The results demonstrate that CMEs provide a reliable platform for evaluating intrinsic activity with TOF, NNi-per-ECSA, and JECSA.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Asma Ghazzy, Lina Yousef, Afnan Al-Hunaiti
Summary: In this study, a visible light-induced trimetallic catalyst (Cu0.5Zn0.5Fe2O4) was synthesized using green methods with Tilia plant extract. The catalyst exhibited excellent selectivity and yield in the oxidation of benzylic alcohols, as well as the oxidation of other aromatic and aliphatic alcohols. It showed advantages in terms of reduced loading, activation with visible light, high conversion, and recyclability, making it a promising photocatalytic nanomaterial.
Article
Biochemistry & Molecular Biology
Md Atikur Rahman, Ahmad Humayan Kabir, Yowook Song, Sang-Hoon Lee, Mirza Hasanuzzaman, Ki-Won Lee
Summary: This study demonstrates that nitric oxide (NO) plays a crucial role in restoring iron (Fe) deficiency-induced growth inhibition and oxidative stress in alfalfa. By upregulating specific genes, NO helps alleviate the negative effects of Fe deficiency by inhibiting oxidative stress and enhancing antioxidant defense mechanisms.
Article
Physics, Multidisciplinary
Michela Botticelli, Gaia Appolloni, Antonio Candeias, Jose Mirao, Adriana Maras
Summary: This research aimed to differentiate between synthetic and natural ochres on paintings using methods such as X-ray diffraction and infrared spectroscopy. The study revealed distinctive features in morphology and composition of synthetic and natural pigments, providing a basis for identifying Mars pigments. This combined methodology proved effective in discriminating between different heating processes and characterizing Mars products for the first time.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Biochemical Research Methods
Callum Bonnar, Rachel Popelka-Filcoff, K. Paul Kirkbride
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2020)
Article
Medicine, Legal
Callum Bonnar, Eliza C. Moule, Nick Lucas, Kelsey E. Seyfang, Robert P. Dunsmore, Rachel S. Popelka-Filcoff, Kahlee Redman, K. Paul Kirkbride
FORENSIC SCIENCE INTERNATIONAL
(2020)
Article
Chemistry, Inorganic & Nuclear
Samantha B. Pandelus, Brendan J. Kennedy, Gabriel Murphy, Helen E. Brand, Elizabeth Keegan, Allan Pring, Rachel S. Popelka-Filcoff
Summary: The chemical speciation of aged uranium oxides is influenced by the source of the samples and their storage conditions. Diffraction methods were used to analyze the crystalline phases present in three samples, each from a different uranium mine. The study identified specific crystalline structures and proposed a core-shell model to explain certain phenomena observed in the samples.
INORGANIC CHEMISTRY
(2021)
Article
Environmental Sciences
Maria Angelica D. Rea, Mathew P. Johansen, Timothy E. Payne, Gillian Hirth, Jim Hondros, Samantha Pandelus, William Tucker, Tim Duff, Attila Stopic, Liesel Green, Allan Pring, Claire E. Lenehan, Rachel S. Popelka-Filcoff
Summary: This study investigated the uptake of natural uranium-series radionuclides and elements by Australian native flora in arid/semi-arid zones. The results showed higher soil-to-plant uptake ratios compared to temperate environments, with different elemental concentrations between grasses and shrubs in winter and summer seasons. Grasses were suggested as effective reference organisms for comparative assessments in arid zones.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2021)
Article
Multidisciplinary Sciences
Mark Lipson, Elizabeth A. Sawchuk, Jessica C. Thompson, Jonas Oppenheimer, Christian A. Tryon, Kathryn L. Ranhorn, Kathryn M. de Luna, Kendra A. Sirak, Inigo Olalde, Stanley H. Ambrose, John W. Arthur, Kathryn J. W. Arthur, George Ayodo, Alex Bertacchi, Jessica Cerezo-Roman, Brendan J. Culleton, Matthew C. Curtis, Jacob Davis, Agness O. Gidna, Annalys Hanson, Potiphar Kaliba, Maggie Katongo, Amandus Kwekason, Myra F. Laird, Jason Lewis, Audax Z. P. Mabulla, Fredrick Mapemba, Alan Morris, George Mudenda, Raphael Mwafulirwa, Daudi Mwangomba, Emmanuel Ndiema, Christine Ogola, Flora Schilt, Pamela R. Willoughby, David K. Wright, Andrew Zipkin, Ron Pinhasi, Douglas J. Kennett, Fredrick Kyalo Manthi, Nadin Rohland, Nick Patterson, David Reich, Mary E. Prendergast
Summary: Genetic and archaeological evidence suggest major demographic changes in sub-Saharan Africa during the Late Pleistocene and early Holocene. This study presents ancient DNA data from eastern and south-central Africa, revealing a geographically structured mixture of three highly divergent source populations.
Article
Multidisciplinary Sciences
John K. Murray, Simen Oestmo, Andrew M. Zipkin
Summary: The study aimed to determine the feasibility of using visible reflectance spectroscopy and quantitative colorimetry for classifying the heat treatment state of silcrete. The results showed that the combination of quantitative, non-invasive, and portable color measurement method with k-Nearest Neighbors lazy machine learning is a promising approach for heat treatment detection. This method provides a more objective and accurate alternative to traditional human analyst approaches.
Article
Multidisciplinary Sciences
Rafaella Georgiou, Rachel S. Popelka-Filcoff, Dimosthenis Sokaras, Victoria Beltran, Ilaria Bonaduce, Jordan Spangler, Serge X. Cohen, Roy Lehmann, Sylvain Bernard, Jean-Pascal Rueff, Uwe Bergmann, Loic Bertrand
Summary: This study provides a comprehensive characterization of native Australian plant exudates, including elemental distribution, functional groups, and main molecular markers. By using high-resolution X-ray Raman spectroscopy, the chemical analysis of these plant exudates was successfully achieved, revealing differences in chemistry among different genera. The multimodal analysis approach gives a deeper understanding of the chemistry of these natural materials long used by Aboriginal Australian peoples.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Archaeology
Catherine A. Morton, Amy Roberts, Calogero M. Santoro, Rachel S. Popelka-Filcoff, Jing Zhao
Summary: This paper presents the results of statistical analyses on the domestic ceramic assemblage from the Caleta Vitor Archaeological Complex in northern Chile. The study confirms that the majority of domestic ceramics were made using local resources and identifies four local pottery traditions. The findings suggest that despite interactions with other regions and powerful polities, the coastal communities of Caleta Vitor maintained their ceramic traditions.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2022)
Article
Archaeology
Daniel E. Pierce, Rachel S. Popelka-Filcoff
Summary: This article investigates the use of ochre in the United States and examines the differences in ochre samples from different regions through geochemical analysis. The results show distinct compositional differences between ochre samples from the St. Louis region and Verkamp Rockshelter, while ochre samples from the Meramec River Valley are somewhat similar to artifacts from Verkamp Rockshelter, suggesting differential acquisition between the two areas.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2023)
Article
Multidisciplinary Sciences
Amy L. Roberts, Rachel Popelka-Filcoff, Craig Westell
Summary: This paper examines the Aboriginal history of the Ma:ko region (Overland Corner) and explores the archaeological record, traditional significance, and the effects of European invasion and settlement. The study reveals that the Ma:ko region is a significant node in the cultural landscape of Riverland and experienced ongoing cross-cultural conflicts in the colonial period.
TRANSACTIONS OF THE ROYAL SOCIETY OF SOUTH AUSTRALIA
(2022)
Meeting Abstract
Anthropology
Alex Bertacchi, Stanley H. Ambrose, Julia I. Giblin, Andrew M. Zipkin, Jessica C. Thompson, Potiphar Kaliba
AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY
(2022)
Article
Anthropology
Andrew M. Zipkin, Stanley H. Ambrose, Craig C. Lundstrom, Gideon Bartov, Alyssa Dwyer, Alexander H. Taylor
JOURNAL OF ARCHAEOLOGICAL METHOD AND THEORY
(2020)
Meeting Abstract
Anthropology
Stanley H. Ambrose, Andrew M. Zipkin
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
(2020)
Article
Anthropology
Julia Becher, Alex Schoeman, Gavin Whitelaw, Stephen Buckley, Jean-Pierre Celliers, Sara Cafisso, Matthias Belser, Maxime Rageot, Cynthianne Spiteri
Summary: This study represents the first application of Organic Residue Analysis (ORA) to southern African early farming pottery to gain a deeper understanding of past human behavior and subsistence patterns. The study found evidence of dairy processing and multi-purpose functionality of the ceramics. It also discovered potential medicinal use and the involvement of dung in pottery sealing and mending.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2024)
Article
Anthropology
Jon Clindaniel, Matthew Magnani
Summary: Large sources of digital trace data have become important in the study of material culture. The authors introduce a computational method to observe digital formation processes and highlight the importance of accounting for these processes in studies utilizing digital trace data.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2024)
Article
Anthropology
Rebecca A. G. Reid, Miranda M. E. Jans, Lesley A. Chesson, Rebecca J. Taylor, Gregory E. Berg
Summary: Chemical treatment of skeletal remains can reduce overall DNA quality and quantity but has no significant impact on stable isotope ratio analysis. Examination of treated and untreated human remains through histological and stable isotope analysis reveals that treated remains exhibit better preservation compared to untreated remains. Stable isotope ratio analysis is viable for both treated and untreated remains, regardless of their origin.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2024)
Article
Anthropology
Laura Tome, Eneko Iriartec, Antonio Blanco-Gonzalez, Margarita Jambrina-Enriquez, Natalia Eguez, Antonio V. Herrera-Herrera, Carolina Mallola
Summary: This paper presents the outcomes of a microcontextual geoarchaeological study conducted on earthen dwellings from the Early Iron Age village of Cerro de San Vicente. The study employed soil micromorphology, lipid biomarker analysis, XRD, and XRF analyses to investigate various aspects of the dwellings, including construction materials, site formation processes, and daily life practices. The results have shed light on the construction layers, floor use, maintenance, repaving, periods of abandonment and decay, and the presence of lipid biomarkers associated with dwelling functionality. The study significantly contributes to our understanding of ancient construction practices and the utilization of domestic spaces during the Early Iron Age.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2024)
