Article
Thermodynamics
Jianguo Wu, Chao Luo, Kesu Zhong, Yi Li, Guoliang Li, Zhongming Du, Jijin Yang
Summary: To accurately and comprehensively analyze the properties of organic nanopores in marine shale, an integration method using helium ion microscope (HIM), scanning electron microscope (SEM), focused ion beam-HIM (FIB-HIM), and FIB-SEM was proposed. Results showed that organic pores below 10 nm significantly impact shale gas storage and productivity evaluation by affecting porosity, surface area, pore size distribution, and connectivity characteristics. The integration method revealed an increase in surface porosity by 10.73% and an increase in specific surface area by 76%. It also showed that the formation of organic nanopores occurs in multiple stages, with larger bubble pores appearing during oil generation and smaller spongy pores appearing during gas generation. The organic pores revealed by FIB-HIM exhibited higher coordination numbers and a higher proportion of inner-connected volume, indicating more complex connectivity characteristics. Despite limitations, these novel insights highlight the importance of exploring organic nanopores at the nanoscale and have the potential to inform further research in this field.
Article
Environmental Sciences
Chunpeng Leng, Yunxia Niu, Yunlong Zhou, Zhinian Yang, Yue Yuan, Fuping Li, Hao Wang
Summary: This study explored the removal of organic matter from wastewater using coated electrodes. The effects of varying current densities and pH in a low concentration range on the removal of organic substances, COD, and NH3-N were investigated. The results showed that the optimal removal efficiency of NH3-N and COD was achieved at an electric current density of 8-10 mA/cm(2), mild alkaline or neutral pH, and an electrolysis time of around 30 minutes. The preparation process of the coated electrode and the degradation mechanism of organic matter in wastewater were also investigated, with the titanium-based ruthenium coated electrode identified as the most suitable for practical application.
POLISH JOURNAL OF ENVIRONMENTAL STUDIES
(2022)
Article
Materials Science, Multidisciplinary
Seiya Tanaka, Naoki Tanaka, Kimiya Komurasaki, Rei Kawashima, Hiroyuki Koizumi
Summary: Continuous-wave laser ablation was used to produce aluminum particles during alumina reduction. The distribution of aluminum particles was affected by laser power, while surface temperatures remained independent of laser power. Impurity precipitation was proposed as the mechanism for aluminum particle production. These findings provide important guidance for the utilization of laser ablation in the reduction of alumina for aluminum production.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Huaying Lin, Shixiang Tian, Anjun Jiao, Zuoyong Cao, Kai Song, Yihuai Zou
Summary: Understanding the pore heterogeneity of tectonic coal and primary-structure coal is crucial for predicting and preventing tectonic coal. Experimental results show that tectonic coal has higher aliphatic functional groups and hydrogen content than aromatic structural groups, with a wider pore size distribution and higher specific surface area.
Article
Chemistry, Physical
Ondrej Dyck, Andrew R. Lupini, Stephen Jesse
Summary: The engineering of quantum materials involves the development of tools for synthesis and characterization challenges. One key factor is atomic-scale modification for desired atomic structures. The use of scanning transmission electron microscopes (STEMs) allows for atomic-scale material manipulation but obstacles like in situ material delivery exist. This article presents progress on in situ thermal deposition platform for synthesis processes in a scanning transmission electron microscope.
Article
Anatomy & Morphology
Yu-Jing Zhang, Dong-Yu Chen, Xue-Ting Chao, Zi-Shu Dong, Zong-You Huang, Xia-Lin Zheng, Wen Lu
Summary: This study investigated the antennal sensilla of Copidosomopsis nacoleiae through scanning and transmission electron microscopy. Six types of sensilla were identified on the antennae, with different distribution patterns and potential functions discussed. Future research on host location mechanisms will build upon these observations.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Biochemistry & Molecular Biology
Shuaifeng Gu, Chanjuan Liu, Wenjing Zhang, Mingren Qu, Yanjiao Li, Yitian Zang, Xiaowen Xiong, Ke Pan, Xianghui Zhao
Summary: The study found that the Fusarium verticillioides cutinase has the ability to degrade rice straw cuticle, with palmitic acid and stearic acid as main products. However, it also showed inhibitory effects on the releasing and producing of sugars, making it not suitable for improving the utilization of agricultural straws.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Analytical
Takayuki Hoshino, Wataru Tooyama, Hiroki Miyazako
Summary: This paper introduces an innovative method for electrochemical imaging of wet samples in water solution using electron-beam addressing of a virtual cathode. By measuring the probe current in the sample interface, topographic and electrochemical images of micro polystyrene spheres and a DPPC/TR-DPPE supported lipid bilayer were successfully obtained. The imaging results suggested spatial resolutions of -180 nm width and -90 nm depth in a topographical image could be captured using this VC-SECM system.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Agriculture, Dairy & Animal Science
Edyta Pasicka, Dariusz Nowakowski, Robin Bendrey, Oleg P. Melnyk
Summary: Determining the age of an animal based on remains, especially fossil remains, is challenging. The study attempted to establish a relationship between the age of a rhinoceros and the ultrastructure of its tooth. The results showed that counting growth lines in the dentine of the tooth accurately corresponded to the known age of the animal.
Article
Polymer Science
Rene Daher, Ivo Krejci, Enrico di Bella, Laurine Marger
Summary: The study evaluated the use of digital optical microscopy (DOM) for analyzing marginal adaptation of dental adhesive interfaces, comparing it with scanning electron microscopy (SEM). The results showed no statistically significant difference between DOM and SEM analysis, and DOM analysis took less time.
Article
Materials Science, Multidisciplinary
Amrita Lall, Paul Bowen, Afsaneh Rabiei
Summary: The research conducted experimental evaluation of creep properties of Alloy 709 in the temperature range of 750-850 degrees C, using in-situ heating-loading and Scanning Electron Microscope (SEM) unit. Accelerated creep tests were performed to obtain multiple data points in the same test, saving time and usage of SEM, and understanding the creep damage mechanism of Alloy 709.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Chemical
Shiqi Huang, Shaoxian Li, Kuang-Jung Hsu, Luis Francisco Villalobos, Kumar Varoon Agrawal
Summary: Etching an ensemble of nanopores in single-layer graphene using a millisecond gasification reactor (MGR) allows for high-performance gas sieving; Analysis of etching conditions on nanopore formation using Raman spectroscopy and scanning tunneling microscope reveals the relationship between etching temperature and pore density; Optimized nanoporous single-layer graphene membranes show extremely attractive CO2 sieving performances with high CO2 permeance and selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Jose M. Sojo-Gordillo, Gerard Gadea-Diez, David Renahy, Marc Salleras, Carolina Duque-Sierra, Pascal Vincent, Luis Fonseca, Pierre-Olivier Chapuis, Alex Morata, Severine Gomes, Albert Tarancon
Summary: A combined scanning thermal microscope and scanning electron microscope was used to characterize a suspended silicon nanowire. The thermal and mechanical properties were measured simultaneously, and the effects of the rough surface on heat dissipation and stiffness were studied.
Article
Construction & Building Technology
Jun'an Lei, Nanxiang Zheng, Xiaobao Chen, Jiefu Bi, Xirong Wu
Summary: The micro-texture of the aggregate plays a crucial role in the anti-skid performance of asphalt pavement. Sandstone exhibits the best anti-skid performance, followed by magmatic rock and limestone.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Natsuko Asano, Jinfeng Lu, Shunsuke Asahina, Seiichi Takami
Summary: Metal oxide nanocrystals are attracting attention due to their unique properties, with hydrothermal synthesis being a promising method. The shape and surface structure of nanocrystals affect their properties, requiring the development of analytical methods. SEM and TEM have advantages in observing nanomaterials, with recent developments improving their observation capabilities.
Article
Chemistry, Applied
Yuchun Yan, Juhyun Lee, Jongin Hong, Hyeon-Jeong Suk
Summary: This study measured the discoloration of liquid foundations and suggested indices to describe the discoloration over time. The decrease of both lightness and hue angle of liquid foundation over time was observed, with different degrees and speed of color change across the four foundations. Positive correlations in changes of lightness and hue were found among the opacity charts and human skin. Additionally, indices Dt and T Delta E were suggested to describe the quantitative amount of discoloration over time and time duration of discoloration.
COLOR RESEARCH AND APPLICATION
(2021)
Editorial Material
Chemistry, Analytical
W. Russ Algar, Tim Albrecht, Karen Faulds, Jun-Jie Zhu
Summary: Russ Algar, Tim Albrecht, Karen Faulds and Jun-Jie Zhu introduce the Analyst themed collection on analytical nanoscience.
Article
Energy & Fuels
Alem Araya Meresa, Bhaskar Parida, Dang Xuan Long, Donguk Kim, Taemin Kim, Taeshik Earmme, Jongin Hong, Dong-Won Kang, Felix Sunjoo Kim
Summary: In this study, bis(pentafluorophenyl)zinc (BPFZn) was introduced as a molecular dopant in a polymer:fullerene blend to enhance the efficiency of organic solar cells. The results showed improved power conversion efficiency, increased fill factor, enhanced exciton dissociation, and suppressed charge recombination.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Tan Tan Bui, Min Kyoung Shin, Seung Yong Jee, Dang Xuan Long, Jongin Hong, Myung-Gil Kim
Summary: High-performance low-cost polyvinylidene fluoride (PVDF) nanofiber (NF) filter membranes were fabricated via electrospinning, showing high filtration efficiency and excellent stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Applied
Mutia Anissa Marysya, Dini Hayati, Sooyoung Han, Dang Xuan Long, Kyunggah Choi, Jongin Hong
Summary: We have successfully synthesized UV-harvesting dyes with a fluorene donor and different pi-conjugation bridges. We have also studied the spectroscopic, electrochemical, and colorific properties of the dyes, and confirmed their usefulness as photosensitizers in visibly transparent and colorless dye-sensitized solar cells. The UV-selective and visibly transparent solar cells show power conversion efficiencies ranging from 0.91% to 2.70% under one sun illumination, and from 6.17% to 8.13% under UVA illumination, with corresponding visible light transmittance of 60.73% to 58.22% and general color rendering index of 91 to 90.
Article
Chemistry, Multidisciplinary
Md Al Mamunur Rashid, Junkyu Kim, Dang Xuan Long, Kyungwon Kwak, Jongin Hong
Summary: Density functional theory, time-dependent DFT, and Marcus theory were used to investigate the optoelectronic and charge-transport properties of hole-transporting materials (HTMs) by inserting long-chain aliphatic alkenes or condensed aromatic rings. The HTMs with condensed aromatic rings showed higher hole mobility.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Ghifari M. M. Alvien, Dang Xuan Long, Kantapa Yolthida, Yoon Hee Jang, Jongin Hong
Summary: A combustion-assisted polyol reduction method has been developed for depositing efficient and transparent Pt counter electrodes in bifacial dye-sensitized solar cells. This method allows for a decrease in reduction temperature to 150 degrees C by adding a fuel that provides extra heat. The stable Pt complexes formed in the system regulate the size of Pt nanoparticles, resulting in excellent electrocatalytic activity and high visible light transmittance. Bifacial DSSCs fabricated with CPR-Pt counter electrodes reach efficiencies of 6.71% and 6.41% under front and back irradiations, respectively.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
K. K. Sarigamala, T. Albrecht, S. Shukla, S. Saxena
Summary: The article presents a synthesis strategy involving dynamic growth of Ag fractals to achieve in situ interfacial manipulation of imidazole-bridged one-dimensional single-crystalline nanoribbons. It successfully demonstrates the structural and morphological changes of silver vanadate nanoribbons and their ability to harness and store photogenerated auxiliary charge carriers. The synthesis methodology overcomes the major bottleneck in nanoengineering of solid-solid interfacial hetero-structures by using real-time feedback of the imaging e-beam to precisely fabricate these hetero-structures and study the interface transition.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wesley Flavell, Andreas Neophytou, Angela Demetriadou, Tim Albrecht, Dwaipayan Chakrabarti
Summary: This article presents a method for programmed self-assembly of single colloidal gyroid crystals using rationally designed patchy spheres. The single colloidal gyroid has a wide photonic bandgap and rich chiroptical properties, making it an attractive chiral photonic crystal.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Joseph M. Hamill, Ali Ismael, Alaa Al-Jobory, Troy L. R. Bennett, Maryam Alshahrani, Xintai Wang, Maxwell Akers-Douglas, Luke A. Wilkinson, Benjamin J. Robinson, Nicholas J. Long, Colin Lambert, Tim Albrecht
Summary: We study the properties of anthracene-based molecules with anchor groups capable of binding to noble metal substrates. The effect of different anchor groups and quantum interference on the electronic and thermoelectric properties of single-molecule junctions is investigated. The results show good agreement between theory and experiments, and suggest that the choice of anchor group and electrode material can significantly influence the thermoelectric behavior of the molecular junction. This finding has important implications for the design of thermoelectric generator devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Anggia Ismi Simpang, Alvien Ghifari, Soo-Young Han, Dini Hayati, Dang Xuan Long, Yoon Hee Jang, Jongin Hong
Summary: We have synthesized photochromic donor-pi-acceptor (D-pi-A) dyes with an azobenzene spacer and diphenylamine (DPAC) and dimethylamine (DMAC) as donor residues. These dyes were characterized and their application in dye-sensitized solar cells (DSSCs) was investigated. The trans-cis isomerization of the azobenzene bridge allows for regulation of the photovoltaic behavior in DSSCs using iodine and cobalt-based redox electrolytes. DMAC-DSSCs perform the best with iodide/triiodide redox shuttle, while DPAC-DSSCs show optimal performance with cobalt redox mediator. Under one sun illumination at the photostationary state, DMAC- and DPAC-DSSCs achieve power conversion efficiencies (PCEs) up to 1.99% and 1.08%, respectively.
Article
Chemistry, Multidisciplinary
Kantapa Yolthida, Dang Xuan Long, Ghifari M. Alvien, Jongin Hong
Summary: We conducted a comprehensive investigation on the synthesis of platinum counter electrodes (CEs) for bifacial dye-sensitized solar cells (DSSCs) using a fuel-assisted polyol reduction method. Different fuels were employed, and the electrocatalytic activity of the resulting Pt CEs was examined. Fmoc-glycine proved to be the most promising fuel, resulting in Pt CEs with exceptional electrocatalytic abilities and high transmittance. This study highlights the significance of fuel-assisted synthesis techniques in achieving highly efficient Pt CEs for bifacial DSSCs.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Christopher Weaver, Adrian C. Fortuin, Anton Vladyka, Tim Albrecht
Summary: This study evaluates different approaches for unsupervised classification of cyclic voltammetric data and finds that t-SNE performs the best in both noise-free and noisy cases, followed by UMAP and then PCA.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Luke A. Wilkinson, Troy L. R. Bennett, Iain M. Grace, Joseph Hamill, Xintai Wang, Sophie Au-Yong, Ali Ismael, Samuel P. Jarvis, Songjun Hou, Tim Albrecht, Lesley F. Cohen, Colin Lambert, Benjamin J. Robinson, Nicholas J. Long
Summary: This study investigates the geometric and electronic structure of 1,1'-dialkynylferrocene molecules using various techniques. It reveals that these molecules prefer a 'hairpin' conformation and that the presence and nature of the second alkyne affect their thermoelectric properties. The study also shows that modulating the position of molecular orbitals and the relative position of the secondary alkyne with the metal surface can control the thermoelectric properties of these systems.
Article
Chemistry, Multidisciplinary
Troy L. R. Bennett, Majed Alshammari, Sophie Au-Yong, Ahmad Almutlg, Xintai Wang, Luke A. Wilkinson, Tim Albrecht, Samuel P. Jarvis, Lesley F. Cohen, Ali Ismael, Colin J. Lambert, Benjamin J. Robinson, Nicholas J. Long
Summary: The thermoelectric properties of self-assembled monolayers (SAMs) can be enhanced by incorporating extra molecular layers, providing a new strategy for the design of thin-film thermoelectric materials.
