Article
Chemistry, Applied
Sidnei O. Souza, Dayara Virginia L. Avila, Victor Cerda, Rennan Geovanny O. Araujo
Summary: This study proposed a new method for inorganic selenium chemical speciation analysis, which was successfully applied to analyze eight beer samples produced in Spain. The method was found to be accurate, precise, and sensitive for determining selenium species in beer samples.
Article
Chemistry, Multidisciplinary
Tongge Li, Haoyu Hu, Tonghui Cai, Xiaoqi Liu, Yixun Wang, Liying Wang, Yu Zhang, Wei Xing, Zifeng Yan
Summary: This study successfully prepared core-shelled Sb@C nanorods as a metal-based cathode for rechargeable aluminum-ion batteries, demonstrating excellent electrochemical performance and cycling stability. The energy storage mechanism of the metallic Sb cathode in RAIBs was also revealed, providing new insights into the design of high-capacity cathodes and battery structures.
Article
Spectroscopy
Barbora Baranova, Zuzana Krarova, Milan Svoboda, Vit Suchopar, Sebastian Burhenn, Sebastian Brandt, Joachim Franzke, Jan Kratzer
Summary: The performance of hydride atomizers based on dielectric barrier discharge (DBD) was assessed using atomic absorption spectrometry. Two designs of DBD atomizers with different electrode structures and power sources were compared. Nafion tubes were identified as effective gas phase dryers. Sensitivity varied among different analytes and atomizer configurations, with the best performance observed in a DBD atomizer with sputtered electrodes and square-wave modulation of high voltage.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhen Jia, Pifu Gong, Mingxing Chen, Zhigang Wang, Xinhui Li, Yan Song, Shengnan Zhang, Ning Zhang, Mingjun Xia
Summary: The doping of Sb3+ ions in Rb3BiCl60.5H(2)O crystals leads to bright orange emission with high photoluminescence quantum yield. The Sb3+ doping optimizes the electronic energy band structure and improves the PL properties.
INORGANIC CHEMISTRY
(2023)
Article
Environmental Sciences
Guangyuan Xu, Zucheng Wang, Hongyan Zhao, Zhaojun Bu, Matthew Peros, Shasha Liu, Hongkai Li, Shengzhong Wang
Summary: The study found that surface water in the mires of the Changbai Mountains in northeastern China had elevated levels of mercury and antimony, while arsenic, selenium, and bismuth were within permissible limits. The concentrations of antimony were influenced by the acidity of the mire water and were positively linked with arsenic. The inputs of mercury and antimony into the surface water were primarily derived from atmospheric wet deposition and subsequent surface runoff.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Chemistry, Physical
Manman Yang, Taichao Su, Shuai Li, Shangsheng Li, Meihua Hu, Xiaobing Liu
Summary: This study successfully synthesized tellurium materials with high thermoelectric performance using a one-step high pressure technique, demonstrating the potential application of high pressure synthesis method in designing thermoelectric materials with simple compositions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Matthias A. Grasser, Tobias Pietsch, Eike Brunner, Michael Ruck
Summary: Ionic liquids (ILs), including task-specific ILs, have the ability to dissolve various solids at moderate temperatures without special reaction vessels. This study investigated the synthesis of sulfides of various elements in ILs as well as the dissolution of antimony sulfide in ILs. Additionally, a new quadruple heterocubane cation was discovered through the crystallization of Sb2S3 in a Lewis-acidic IL.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
N. Syed Kaleemullah, R. Thangavel, J. Kumar
Summary: This study investigates the electronic and optical properties of A(2)B(3) (A = Bi or Sb, B = Se or Te) compounds using the FP-LAPW method within the density functional theory framework. The results are in good agreement with experimental data, and Sb2Te3 compounds exhibit the highest absorption and reflection values among all compounds studied. These compounds show a strong absorption coefficient between 0 and 5 eV, making them suitable for optoelectronic applications.
BULLETIN OF MATERIALS SCIENCE
(2021)
Correction
Chemistry, Multidisciplinary
A. Schon, E. Kaminska, F. Schelter, E. Ponkkonen, E. Korytiakova, S. Schiffers, T. Carell
Summary: In their communication on page 3906, researchers present model compounds containing [PbE2I16](8-) (E=Sb, Bi) anions, representing precise cut-outs of doped perovskites, with surprisingly low band gaps.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Natalie Dehnhardt, Jan-Niclas Luy, Philip Klement, Luca Schipplick, Sangam Chatterjee, Ralf Tonner, Johanna Heine
Summary: Doping and alloying are useful techniques for modifying lead halide perovskites. The effects of heterovalent doping with Sb3+ and Bi3+ cations are still being investigated. The newly discovered metalates show low band gaps due to good electronic matching between PbI6 and EI6 units.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Ralf Albrecht, Michael Ruck
Summary: The reaction of chalcogen dioxides with As2O3 in a high-temperature hydroflux solution resulted in the formation of potassium trichalcogenides crystals with dimensions up to 2 cm. The new heterochalcogenide anion was formed during the process. The reduced activity of water played a key role in the unexpected redox reaction and precipitation of hygroscopic compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Ruiming Li, Fang Yao, Yalun Xu, Songxue Bai, Zhenglin Jia, Qianqian Lin
Summary: Germanium, indium gallium arsenide, indium antimonide, and mercury cadmium telluride dominate as short-wavelength infrared photo-sensing materials. However, their complex fabrication process and high production cost limit their widespread applications. Recent studies have shown that TexSe1-x has great potential for infrared photodetection, but the current devices suffer from high dark current and poor performance. In this work, high-quality TexSe1-x films were fabricated using thermal evaporation and low-temperature annealing, and the optoelectronic properties were systematically investigated and optimized. The resulting photodiodes based on the optimized TexSe1-x thin films exhibited high responsivity, reduced dark and noise current density, and a fast response time. Prototypical devices based on Te0.65Se0.35 thin films were successfully demonstrated for optical communications, showing the potential for low-cost short-wavelength infrared photodetection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tobias Eder, Florenz Buss, Lukas F. B. Wilm, Michael Seidl, Maren Podewitz, Fabian Dielmann
Summary: This paper reports a new oxidative fluorination reagent consisting of an SF5- anion and a chemically inert phosphonium cation, which is thermally stable. Using this reagent, the SeF5- and TeF5- anions were successfully generated and tetrafluoro(phenyl)-lambda(5)-selenate and -tellurate were synthesized. Furthermore, further derivatization of the tetrafluoro(phenyl)-lambda(5)-tellurate allowed the introduction of functional groups into organic molecules.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Analytical
Rong Rong, Zhaoqing Cai, Xiaoyan Li, Zheng Wang
Summary: A highly sensitive method for determining mercury was developed based on DC atmospheric pressure glow discharge and cold vapor generation, with the accuracy and practicality verified through experiments.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Multidisciplinary
Pavani Devabathini, Darrell L. Fischer, Si Chen, Ajith Pattammattel, Gabriel Bury, Olga Antipova, Xiaojing Huang, Yong S. Chu, Sawako Horai, Yulia Pushkar
Summary: Human activities result in the annual emission of 2000 metric tons of mercury compounds. While mercury biomagnification has been studied in marine mammals and predatory fish, little is known about mercury accumulation in the brains of wild terrestrial species. This study found elevated mercury content in the brain of wild small Indian mongooses, prompting the use of synchrotron X-ray fluorescence imaging to map biologically relevant and neurotoxic elements. The results showed the presence of mercury-rich aggregates in the cells of the mongoose brain, and these aggregates correlated with selenium. The study highlights the vulnerability of the mongoose brain to mercury pollution and provides evidence of a Se-based detoxification mechanism.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Leila Khalfa, M. Luisa Cervera, Soaad Souissi-Najjar, Mohamed Bagane
Summary: In this study, natural smectite clay was treated with sulfuric acid to enhance its adsorption capacity for iron ions in aqueous solutions. The results indicated that the adsorption efficiency was highest at pH 3 and room temperature, with the acid-activated clay showing a significantly higher adsorption capacity for Fe(III) compared to natural clay.Overall, the study demonstrates that sulfuric acid-treated clay has promising potential for removing iron ions from aqueous solutions.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Fethia Chehbani, Gianni Gallello, Takoua Brahim, Sami Ouanes, Wahiba Douki, Naoufel Gaddour, Maria Luisa Cervera Sanz
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Spectroscopy
Marcelo Farias de Andrade, Iago Jose Santos da Silva, Maria Fernanda Pimentel, Ana Paula Silveira Paim, M. Luisa Cervera, Miguel de la Guardia
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2020)
Article
Green & Sustainable Science & Technology
Leila Khalfa, Ali Sdiri, Mohamed Bagane, Maria Luisa Cervera
Summary: A natural clay material from southern Tunisia was used as a low cost sorbent in a column-wise removal of metal pollutants, showing promising results for sustainable wastewater treatment strategies. Column adsorption experiments were carried out for production of cleaner effluents and understanding of main removal mechanisms through a dynamic methodology.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Geography, Physical
Gianni Gallello, Mirco Ramacciotti, Oreto Garcia-Puchol, Simon Chenery, Alfredo Cortell-Nicolau, Maria Luisa Cervera, Agustin Diez-Castillo, Agustin Pastor, Sarah B. Mcclure
Summary: This study investigated the stratigraphical sequence of Cocina Cave in Spain and successfully utilized rare earth elements as markers to support and confirm the archaeological temporal interpretation of the cave's formation, revealing the process and different natural and human activities associated with it.
Article
Chemistry, Multidisciplinary
Roberto Saez-Hernandez, Adela R. Mauri-Aucejo, Angel Morales-Rubio, Agustin Pastor, M. L. Cervera
Summary: This study constructed a smartphone-based analytical device using inexpensive materials and validated its accuracy in measuring phosphate concentration in various samples. While the sensitivity of the smartphone device was slightly lower than that of UV-Vis spectroscopy, it exhibited a wider linear range. The research highlights the versatility of smartphones as analytical devices, providing accurate results at a low cost.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Archaeology
Mirco Ramacciotti, Gianni Gallello, Marco Lezzerini, Stefano Pagnotta, Andrea Aquino, Llorenc Alapont, Juan Antonio Martin Ruiz, Alejandro Perez-Malumbres Landa, Ramon Hiraldo Aguilera, David Godoy Ruiz, Angel Morales-Rubio, M. Luisa Cervera, Agustin Pastor
Summary: This study analyzed the chemical, mineralogical and colorimetric characteristics of ancient mortars from Silla Islamic Tower and Fuengirola Castle. By using techniques such as X-ray diffraction and infrared spectroscopy, the mineralogical characteristics were determined. The concentrations of major and trace elements were obtained through portable X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry. Multivariate statistics were applied to analyze the data and classify the undated samples. Smartphone photo processing and visible spectrophotometry were used to evaluate the color features of the samples.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2022)
Article
Chemistry, Applied
Roberto Saez-Hernandez, Kevin U. Antela, Adela R. Mauri-Aucejo, Angel Morales-Rubio, M. Luisa Cervera
Summary: In this study, a colorimetric analysis of adulterated tuna samples was conducted using a spectroradiometer and a smartphone as capture devices. The results showed that both nitrite and beetroot treatments worked well as coloring agents in tuna, with nitrate also being effective. However, the radish treatment resulted in a whitish color of the tuna flesh. This approach allows for the differentiation of different adulterating agents.
Article
Food Science & Technology
Roberto Saez-Hernandez, Pablo Ruiz, Adela R. Mauri-Aucejo, Vicent Yusa, M. L. Cervera
Summary: A digital image colorimetric approach using a smartphone as a detection device was developed to study the concentration of acrylamide in homemade toasts. The method allowed for the estimation of acrylamide content in the toast based on the captured color of different slices of bread. The results demonstrated that the color parameters R (from RGB color space) and h* (hue, from CIE L*C*h*) worked well as predictors, enabling the identification of samples above and below the recommended acrylamide value.
Article
Archaeology
Roberto Saez-Hernandez, Kevin U. Antela, Gianni Gallello, M. Luisa Cervera, Adela R. Mauri-Aucejo
Summary: A non-destructive colorimetric approach using smartphones was developed to distinguish between different red pigments in frescoes wall paintings. The results were validated by reference methods and showed that smartphones can be used as cheap, fast, and user-friendly analytical devices for screening frescoes samples.
JOURNAL OF CULTURAL HERITAGE
(2022)
Article
Chemistry, Analytical
Kevin U. Antela, Roberto Saez-Hernandez, M. Luisa Cervera, Angel Morales-Rubio, M. Jose Luque
Summary: A low-cost instrument for automated colorimetric analysis has been developed, which consists of a 3D-printed carousel sampler and a Raspberry Pi4-controlled signal measurement module. The device has been tested with different food dyes and food samples, showing statistically comparable results to a conventional benchtop spectrophotometer. It achieves a reduction in sample and waste volume, analysis time, and energy usage, while ensuring operator safety and following the principles of green analytical chemistry.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
Maria J. da Silva, Ana Paula S. Paim, Iago J. S. da Silva, Maria Fernanda Pimentel, Maria Luisa Cervera, Miguel de la Guardia
Summary: This study determined the levels of total mercury in various food samples consumed by people of different ages in Spain and evaluated the potential toxicological risks. The results showed that if tuna is excluded from the menu, the daily intake of total mercury does not pose risks to Spanish children and adults.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Food Science & Technology
Roberto Saez-Hernandez, Kevin U. Antela, Adela R. Mauri-Aucejo, Angel Morales-Rubio, Maria Josefa Luque, M. Luisa Cervera
Summary: This study proposes a new technique based on smartphone imaging to detect fraudulent tuna samples by analyzing their color. Using logistic regression model for classification and identification, the proposed method achieves low false positive and false negative rates.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Archaeology
Mirco Ramacciotti, Gianni Gallello, Stefano Columbu, Dario Fancello, Agustin Diez-Castillo, Oreto Garcia-Puchol, Agustin Pastor, M. Luisa Cervera
Summary: A methodological proposal was developed to study prehistoric siliceous artefacts using smartphone photography as an analytical tool. Different materials were sampled from La Calvera rock-shelter and analyzed using various non-destructive techniques. The results demonstrate that smartphone image analysis is a reliable and efficient method for characterizing siliceous rocks in large lithic assemblages.
SCIENCE AND TECHNOLOGY OF ARCHAEOLOGICAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
Llorenc Alapont, Gianni Gallello, Marcos Martinon-Torres, Massimo Osanna, Valeria Amoretti, Simon Chenery, Mirco Ramacciotti, Jose Luis Jimenez, Angel Morales Rubio, M. Luisa Cervera, Agustin Pastor
Summary: This article reports on the anthropological and chemical data obtained from the study of casts from Pompeii, specifically focusing on the elemental composition of bones and plaster. The results provide important insights into the cause of death of the victims and highlight the challenges of bioarchaeological analysis in understanding post-depositional processes and plaster contamination.