Article
Chemistry, Multidisciplinary
Federico Bruno, Alice Sciortino, Gianpiero Buscarino, Maria Laura Soriano, Angel Rios, Marco Cannas, Franco Gelardi, Fabrizio Messina, Simonpietro Agnello
Summary: This study investigates carbon dots produced via bottom-up and top-down routes using multiple techniques, comparing their structural and optical properties and interaction with mercury ions. Key structural and optical properties common to all types of carbon dots were identified, along with critical differences in optical response and microscopic mechanisms responsible for fluorescence. The study also suggests likely interaction sites of mercury ions on carbon dots and reveals details on mercury-induced fluorescence quenching for optimizing sensing applications.
Article
Environmental Sciences
Azad Kumar, Chaitany Jayprakash Raorane, Asad Syed, Ali H. Bahkali, Abdallah M. Elgorban, Vinit Raj, Seong Cheol Kim
Summary: The rapid industrialization has led to the release of harmful contaminants into water bodies, posing risks to health and the environment. In this study, inorganic nanocomposites were prepared to treat toxic dyes. The synthesized TiO2/PAni/GO nanocomposites exhibited enhanced ability to degrade Thymol Blue and Rose Bengal dyes through photocatalytic reactions. These findings have potential implications for water pollution control.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Francesca Limosani, Elvira Maria Bauer, Daniele Cecchetti, Stefano Biagioni, Viviana Orlando, Roberto Pizzoferrato, Paolo Prosposito, Marilena Carbone
Summary: In this study, N-doped carbon quantum dots were successfully synthesized using a top-down approach, with size control and -NH2 functionalization. These N-CQDs exhibited good selectivity and labeling ability in metal ion detection and bioimaging.
Article
Chemistry, Physical
Anzai Shi, Kai Sun, Yanxuan Wu, Panjie Xiang, Igor B. Krylov, Alexander O. Terent'ev, Xiaolan Chen, Bing Yu
Summary: The oxygen-doped graphite-like carbon nitride (OCN) photocatalyst shows better catalytic performance under visible light irradiation compared to the original, offering a potential expansion in the development of novel heterogeneous photocatalysts for applications in organic synthesis.
JOURNAL OF CATALYSIS
(2022)
Article
Multidisciplinary Sciences
Yonatan Vanunu, Jared M. Hotaling, Mike E. Le Pelley, Ben R. Newell
Summary: The study shows that initial attention in risky choice is driven by perceptual properties of the stimulus, while subsequent choices are more influenced by goal-driven factors. Options with the highest values and largest font sizes have the greatest impact on choice, while distractors may attract attention but do not affect actual decision-making.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Juan Diaz-Colunga, Nanxi Lu, Alicia Sanchez-Gorostiaga, Chang-Yu Chang, Helen S. Cai, Joshua E. Goldford, Mikhail Tikhonov, Alvaro Sanchez
Summary: Microbial communities frequently invade one another as a whole, a phenomenon known as community coalescence. This study provides direct evidence that collective invasions can lead to ecological coselection in microbial communities due to cross-feeding interactions at the community level.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Green & Sustainable Science & Technology
Yuanyuan Tang, Wentai Wang, Bozheng Wang, Xing Sun, Chunyu Guo, Jia Xu
Summary: A novel efficient AgCl-based heterojunction photocatalyst was synthesized by in-situ electrostatic-assembly of carbon dots, showing significantly enhanced visible-light photocatalytic performances in dye degradation and hydrogen evolution. The photocatalyst also exhibited good reusability and stability, along with a proposed photocatalytic mechanism facilitating the transfer-separation of photo-generated electron-hole pairs. This work could provide a new route to prepare novel high-efficient photocatalysts for energy and environmental applications.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Bong Lee, Gretel A. Stokes, Alina Valimukhametova, Steven Nguyen, Roberto Gonzalez-Rodriguez, Adam Bhaloo, Jeffery Coffer, Anton V. Naumov
Summary: Graphene quantum dots (GQDs) show high light-to-heat conversion efficiency and excellent biocompatibility, making them promising for photothermal therapy. In this study, GQDs such as reduced graphene quantum dots (RGQDs) and hyaluronic acid graphene quantum dots (HGQDs) were tested and proved to have substantial NIR absorption and fluorescence, allowing for in vivo imaging and tumor ablation. The experiments conducted using HeLa cancer cells demonstrated that GQDs can heat the cells up to 54.5°C and significantly inhibit cell viability. The fluorescence of GQDs indicates their successful internalization into the cells, suggesting their potential as cancer theragnostics agents.
Article
Automation & Control Systems
T. Burr, S. Croft, A. Favalli, T. Krieger, B. Weaver
Summary: This paper reviews progress and presents new results for uncertainty quantification in nuclear safeguards, focusing on data-driven choices in SD estimation, the use of approximate Bayesian computation, computational calibration, revisions to the GUM, and critique of a Unified Theory of Measurement Errors and Uncertainties.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2021)
Article
Biology
Hajo Eicken, Finn Danielsen, Josephine-Mary Sam, Maryann Fidel, Noor Johnson, Michael K. Poulsen, Olivia A. Lee, Katie Spellman, Lisbeth Iversen, Peter Pulsifer, Martin Enghoff
Summary: Effective responses to rapid environmental change rely on observations to inform planning and decision-making. Comparing top-down, large-scale program driven approaches with bottom-up approaches initiated and steered at the community level can yield benefits, especially when connecting to Indigenous and local knowledge.
Review
Chemistry, Organic
Changzhen Yin, Miao Wang, Zhenxi Cai, Bojun Yuan, Peng Hu
Summary: This short review discusses recent developments of organic photocatalysis using iron group metal catalysts (Fe, Co, Ni), introducing different types of reactions, catalyst details, and mechanisms.
SYNTHESIS-STUTTGART
(2022)
Article
Chemistry, Multidisciplinary
Gyurim Park, Dong Yeon Jeong, Seung Yeon Yu, Jong Jin Park, Jong H. Kim, Hoichang Yang, Youngmin You
Summary: This research demonstrates an advancement in the engineering of emitters with circularly polarized luminescence (CPL) properties. By utilizing a combined top-down and bottom-up strategy, the photoluminescence quantum yield and the luminescence dissymmetry factor were simultaneously amplified. The integration of chiral anions and the formation of helical assemblies of square-planar Pt(II) complexes played crucial roles in activating the CPL-active metal-metal-to-ligand charge transfer transition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Environmental Sciences
Andreas Froemelt, Arne Geschke, Thomas Wiedmann
Summary: This article discusses a highly detailed, spatially-resolved modelling framework that quantifies local activities and analyzes system-wide environmental and economic effects of planned interventions. Two case studies were conducted to examine production-based greenhouse gas emissions, consumption-based carbon footprints, and regional differences in Switzerland. The importance of providing regionalized information along economic value chains and the potential benefits and drawbacks of detailed scenarios were highlighted.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Federico Bruno, Alice Sciortino, Gianpiero Buscarino, Marco Cannas, Franco Mario Gelardi, Fabrizio Messina, Simonpietro Agnello
Summary: Carbon quantum dots are a new class of carbon-rich materials with unique optical and structural properties, they can be finely tuned for various applications due to their wide variability of properties. Their ease of synthesis, non-toxicity, and strong interactions with the environment make them promising for chemosensors.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Margarita Brandt, Isabel Silva-Romero, David Fernandez-Garnica, Esteban Agudo-Adriani, Colleen B. Bove, John F. Bruno
Summary: This study found that nutrient availability, temperature, and herbivory all have impacts on macroalgal biomass. Excluding herbivores significantly increased macroalgal biomass, regardless of season or nutrient availability. However, the interactive effects of nutrients and herbivores differed between the cool and warm seasons. The results suggest that nutrient availability, rather than temperature, modulates the effects of herbivory.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Chemical
Sher Ling Lee, Joy Thomas, Cheng-Liang Liu, Kuo-Lun Tung
Summary: In this study, a multi-functional Janus membrane was fabricated by depositing mussel-inspired tannic acid (TA) on hydrophobic PVDF surfaces using a one-pot fabrication method. The membrane demonstrated high separation efficiency and remained stable in harsh environments. This nature-inspired Janus membrane using a green modification method provides new insights for oily wastewater treatment.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Chi-Jung Chang, Pei-Yao Chao, Jem-Kun Chen, Arul Pundi, Yuan-Hsiang Yu, Chao-Lung Chiang, Yan-Gu Lin
Summary: This study investigated the properties of magnetically stirrable photocatalysts binding the ZnS-decorated Ni foam with a metal complex cocatalyst. The introduction of the metal complex can enhance light absorption, surface hydrophilicity, interfacial charge migration, and H-2 production activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Chun-Yao Huang, Feng-Yen Lin, Chi-Jung Chang, Chien-Hsing Lu, Jem-Kun Chen
Summary: The performance of an electrochemiluminescence (ECL) immunosensor was improved by using gradient manipulation with SiO2-coated magnetic beads as nanocarriers and cadmium telluride quantum dots as signal labels. Magnetolithography (ML) with magnetized nickel masks was used to form the immunosensor gradients on the electrode. The gradient immunosensor significantly enhanced the ECL intensity compared to the gradient-free immunosensor.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yu -Xiang Chang, Chih-Feng Wang, Chi-Jung Chang, Chien-Hsing Lu, Jem-Kun Chen
Summary: In this study, a highly sensitive ring structure was fabricated on a silicon substrate using a self-organization method. A hydrophobic group was coated on the bottom of a 500-nm hole array photoresist template, and after treatment with oxygen plasma, ring patterns were formed at the interface between the hydrophobic and wetting regions. Poly(N-isopropylacrylamide) was grafted to these ring structures to immobilize gold nanoparticles and create a uniform ring array. This structure was then used as a biosensor for the highly sensitive detection of streptavidin.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Chemical
Yu-Rou Lai, Sher Ling Lee, Yun-Ke Liou, Yi-Fan Lin, Kuo-Lun Tung
Summary: The interfacial polymerization (IP) process is widely used for nanofiltration membranes and thin film composite (TFC) membranes due to its high selectivity and flexibility. In this study, a PA TFC membrane was fabricated on an alumina hollow fiber substrate by the polyamide IP process with the addition of arginine (Arg) as an additive, leading to higher stability for the IP process of PA membranes. The membrane showed excellent retention for commercial dyes, demonstrating potential industrial application for the removal of charged dyes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Ndumiso Vukile Mdlovu, Kuen-Song Lin, Chi -Jung Chang, You-Sheng Lin, Syeda Fareesa Hassan
Summary: In this study, tungsten-doped titania nanotubes were synthesized to enhance their reactivity in the photodegradation of various dyes under UV radiation. The W-doped TNs exhibited a high specific surface area and the presence of W6+ species, as confirmed by XPS spectra. The photodegradation of the dyes involved two-step reactions, and the W-doped TNs showed optimal photocatalytic efficiencies for the degradation of each dye.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Chemical
You-Sheng Lin, Kuen-Song Lin, Yi-Fan Lai, Ndumiso Vukile Mdlovu, Chi-Jung Chang, U-Ser Jeng, Syeda Fareesa Hassan
Summary: This study used spherical chain-shaped nanophase zero-valent-iron (nZVI) with different metal loadings to simulate wastewater, forming bimetallic nanocatalysts (BNC). The Cu removal efficiency was highest in nZVI@Cu-800. The size of nZVI was found to increase by 181% at 55 degrees C compared to 25 degrees C. XANES/EXAFS spectra analysis revealed the presence of Cu2O in nZVI@Cu, indicating a reductive degradation mechanism. Overall, this study demonstrates that nZVI and BNCs can effectively convert harmful 4-NP into useful and high-value 4-AP.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Physical
Chien-Yie Tsay, Ching-Yu Chung, Chin-Yi Chen, Yu-Cheng Chang, Chi-Jung Chang, Jerry J. Wu
Summary: Bismuth vanadate (BiVO4), W-doped BiVO4 (BiVO4:W), and Mo-doped BiVO4 (BiVO4:Mo) nanoparticles were synthesized using a green hydrothermal method. The effects of W and Mo doping on the microstructure and optical properties of BiVO4 nanoparticles and their photocatalytic activity for Rhodamine B (RhB) degradation were investigated. The results showed that impurity doping could modify the surface morphology, reduce particle size, and increase the concentration of photogenerated charge carriers, leading to enhanced photocatalytic activity.
Article
Engineering, Environmental
Yu-Xiang Wang, Chi-Jung Chang, Chien-Hsing Lu, Jem-Kun Chen
Summary: Developing a versatile methodology for high-speed water purification is critical for environmental and water source protection. A versatile methodology based on the application of an alternating electric field (AEF) on a system including dye-emulsified micelles (DEM) and adsorbents was reported. The adsorption and desorption of DEM was significantly enhanced by frequency manipulation, and the adsorbents could be recycled multiple times within a short period.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Chi -Jung Chang, Yu-Chieh Kao, Jem-Kun Chen, Hao-Cheng Zhang, Shu-Yii Wu
Summary: In this research, regenerated cellulose and polyester were obtained from waste jeans through the selective dissolving of cellulose fibers using an ionic liquid. A sustainable decoloration approach was developed without the need for bleaching or leaching processes. The study showed that the chemical structure of the ionic liquid remained unchanged after the photocatalytic decoloration process, allowing for its repeated use.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Chemical
Yu-Xian Lin, Yun-Ke Liou, Sher Ling Lee, Shao-Yu Chen, Fang-Ting Tao, Tung-Wen Cheng, Kuo-Lun Tung
Summary: With the increasing demand for freshwater, the study focuses on the preparation of a composite membrane for desalination using membrane distillation. The effects of different parameters on the membrane characteristics were investigated, and the advantages and disadvantages of different distillation methods were evaluated. The results showed that the membrane with higher PMMA content had larger pores and higher permeate fluxes. Water gap membrane distillation exhibited higher fluxes compared to air gap membrane distillation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Chi -Jung Chang, Zheng-Ting Tsai, Kuen-Song Lin, Yu-Hsuan Nian
Summary: The flower-like MoS2@Ag2S (MS@AS) photocatalyst was synthesized by hydrothermal and ion exchange reactions. Ag2S nanoparticles were attached to the flower-like MoS2, as confirmed by SEM, TEM, elemental line scan profiles, and XPS analysis. The shifts of XPS Mo3d and S2s peaks in the MS@AS photocatalyst indicate interaction between MoS2 and Ag2S (or Ag), and its band structure was proposed based on UPS spectrum and Tauc plot. The MoS2@Ag2S photocatalyst showed improved efficiency in H2 production compared to pristine MoS2, attributed to its S-scheme band structure facilitating electron-hole separation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Chi-Jung Chang, Yuan-Hsiang Yu, Jemkun Chen, Ying-Jen Chen, Arul Pundi, Ming-Ching Lee, Shih-Rong Hsieh
Summary: In this study, a nickel complex (NiC) sensor with thiourea binding sites was used for the colorimetric sensing of cyanide. The detection limits of NiC towards cyanide and sulfide were investigated and found to be lower than the allowed cyanide concentration in drinking water. The NiC sensor also showed high selectivity towards cyanide and sulfide, and was able to detect trace amounts of cyanide ions in natural food samples.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Engineering, Chemical
Chi-Jung Chang, Yu-Chieh Kao, Kuen-Song Lin, Chin-Yi Chen, Chun-Wen Kang, Ting-Hao Yang
Summary: Loading appropriate semiconductor nanomaterials on carbon fiber cloth is an effective method to fabricate flexible and high-performance photocatalysts. The CF cloth@BiOBr/CuO photocatalyst shows significantly enhanced H2 production activity compared to the CF cloth@BiOBr photocatalyst, due to the presence of p-n heterojunctions and optimized amounts of BiOBr and CuO.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Physical
Yu-Cheng Chang, Yung-Chang Chiao, Chi-Jung Chang
Summary: The g-C3N4@ZnIn2S4 heterostructures were successfully synthesized using thermal annealing and hydrothermal methods. The photocatalytic hydrogen production efficiency of g-C3N4@ZnIn2S4 heterostructures was significantly improved, showing over 200 times higher than g-C3N4 nanostructures and ZnIn2S4 nanostructures. This enhancement is attributed to the effective utilization of visible light and efficient separation of photogenerated electron-hole pairs.