Article
Geochemistry & Geophysics
Devin L. Schrader, Jemma Davidson
Summary: The most abundant group of meteorites, ordinary chondrites, originate from S-type asteroids in the inner Solar System. Silicate minerals in pristine ordinary chondrites show compositional similarities to those found in comet samples, suggesting that comets may have formed from diverse materials in the Solar System and the migration process lasted for millions of years.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Environmental Sciences
Yue Wang, Meng Fu, Bowen Wu, Mingyan Huang, Tian Ma, Hailian Zang, Hanyi Jiang, Yuting Zhang, Chunyan Li
Summary: This study investigates the influence of glucose and mannose on biofilm formation and the enhancement of the biofilm matrix activity by divalent cations. The study also identifies different stages of biofilm formation and the distribution of extracellular polysaccharides and extracellular DNA in different spaces. The findings of this study are significant for the application of biofilms in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Jia Gao, Shenyu Shi, Qiuying Li, Huili Ma
Summary: Room temperature phosphorescence (RTP) in organic aggregates depends on molecular conformation and packing, which pose challenges in understanding the mechanism of polymorphism-dependent RTP. In this study, different RTP lifetimes were observed in organic polymorphs of DOS compounds (DOS-O and DOS-S). By analyzing molecular and electronic structures, and decay dynamics of T(1) states, it was found that the decreased energy gap of T-1 states due to conformational variation is responsible for the shortened RTP lifetime from DOS-O to DOS-S. This was further supported by the good agreement between theory and experiment in RTP lifetime.
Article
Chemistry, Applied
Chang Sun, Shuang Wang, Lu Han, Chen Wang, Buyuan Guan, Wenfu Yan
Summary: The study found that anions can penetrate into the micellar system of cationic surfactants, and the size and hydratability of different anions can affect the surfactant packing parameter. This insight into the location of anions provides a new understanding of the formation mechanism of mesoporous silica and other mesostructured materials in solution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Abdulkadir Tanimu, Khalid Alhooshani
Summary: Organically modified materials are widely used adsorbents for Hg(II) removal due to their abundance of organic and inorganic substrates with desirable properties and ease of surface chemical modifications. Future research in the design and development of advanced adsorbents can be guided by a deeper understanding of the chemical reactions and their relation to the Hg(II) adsorption mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Louwanda Lakiss, Cassandre Kouvatas, Jean-Pierre Gilson, Valentin Valtchev, Svetlana Mintova, Christian Fernandez, Robert Bedard, Suheil Abdo, Jeffery Bricker
Summary: This study aims to understand the chemical interactions between an active phase (FAU zeolite) and a binder during catalyst forming using advanced NMR spectroscopy techniques. The research provides insights into the solid-state chemistry during the extrusion process and the creation of new active sites different from those in the original materials. Advanced NMR techniques are shown to be powerful tools in elucidating the nature and location of newly created active sites during catalyst forming.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Environmental Sciences
Menghua Lu, Junyu Zheng, Zhijiong Huang, Cheng Wu, Chuanzeng Zheng, Guanglin Jia, Lihang Zhang, Fan Jiang, Zhen Li, Junwen Liu, Duohong Chen
Summary: This study investigates the spatiotemporal characteristics of carbonaceous aerosols in the Pearl River Delta region in China, finding that urban sites have higher OC and EC concentrations than regional sites, with sharp OC concentration peaks in the evening due to traffic exhaust and cooking activities. The study also reveals that the formation of SOCcom is more regionally homogenous, while there are significantly different formation mechanisms of SOCnon-com in the downwind PRD region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Electrical & Electronic
Teng Liu, Xiongfei Wang
Summary: This study analyzes the impact of hybrid voltage- and power-based synchronization control on the transient stability of grid-forming inverters, showing positive effects on enhancing system damping and transient stability. A comparative study of two active power controllers reveals that using the droop controller in the hybrid synchronization control significantly decreases the active power reference, leading to better transient stability behavior compared to using the PI controller. The theoretical findings are supported by experimental tests.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Review
Chemistry, Inorganic & Nuclear
Huihui Yan, Xikun Zhang, Zhengwei Yang, Maoting Xia, Chiwei Xu, Yiwen Liu, Haoxiang Yu, Liyuan Zhang, Jie Shu
Summary: This review discusses the electrolyte strategies for rechargeable aqueous zinc ion batteries (AZIBs), including diverse electrolytes, concentration choices, and flexible hydrogel electrolytes, as well as prospects for biocompatible or biodegradable bio-electrolytes as potential candidates.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
Meng Zhang, Kunde Lin
Summary: The origin of polyhalogenated carbazoles (PHCZs) in the marine environment has been unclear. This study investigated the formation of PHCZs during the chlorination of seawater containing carbazole and its derivatives. A total of 14 PHCZs were identified, including six commonly found and eight unknown congeners. The production of common PHCZs from the chlorination of seawater with 3-methyl carbazole and 3-formyl carbazole was also demonstrated for the first time. The formation of PHCZs resulted from the halogenation of carbazole by reactive chlorine species (RCS) and mainly reactive bromine species (RBS), which formed from the oxidation of bromide by RCS.
Article
Environmental Sciences
Chunjian Lyu, Xiaojie Li, Huibin Yu, Yonghui Song, Hongjie Gao, Peng Yuan
Summary: In this study, the researchers monitored the potential nitrification rate, denitrification potential, and net N2O production rate in riparian soils, and used metagenomic sequencing to understand the mechanism of microbial N removal. The riparian soils showed a strong denitrification process, with higher rates of denitrification than nitrification and N2O production. Near farmland edges, the rates of denitrification, nitrification, and N2O production were lower. The composition of the N-cycling microbial community varied between different soil depths.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
N. Khayatan, M. Rohwerder
Summary: Cathodic delamination is one of the most important mechanisms in organic coating degradation. While significant progress has been made towards understanding the fundamentals of delamination, the underlying key parameters are still not fully comprehended. In this study, a new hypothesis is proposed that cation insertion into the intact interface determines the rate of delamination, based on the analysis using a combined Scanning Kelvin Probe/potentiostat set-up and in-depth delamination rate analysis.
Article
Green & Sustainable Science & Technology
Xueli Hu, Yuanhang Zhou, Yingying Zhou, Yun Bai, Ruiting Chang, Peng Lu, Zhi Zhang
Summary: Under the COVID-19 epidemic, the use of therapeutic drugs poses a hidden danger to the water environment. A core-shell microporous zinc silicate (SiO2@ZSO) was prepared and used for the adsorption of chloroquine phosphate (CQ), tetracycline (TC), and ciprofloxacin (CIP) to eliminate the threat of COVID-19. SiO2@ZSO exhibited high adsorption efficiencies for CQ, TC, and CIP within a short period of time. The adsorption mechanism involved physical adsorption and various factors were investigated.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Jieying Liang, Juanfang Ruan, Bosiljka Njegic, Aditya Rawal, Jason Scott, Jiangtao Xu, Cyrille Boyer, Kang Liang
Summary: Selecting an appropriate support material for enzyme immobilization is crucial in the development of functional biosystems. Covalent-organic frameworks (COFs) with metal-free and highly stable properties are found to be ideal supports. COF-LZU1, among three COFs developed in this study, is found to retain the highest activity when horseradish peroxidase (HRP) is incorporated. The structural analysis reveals that COF-LZU1 has the weakest interaction with the hydrated enzyme, easiest accessibility to the substrate, and optimal conformation of enzyme, which promote the bioactivity of HRP-COF-LZU1. COF-LZU1 also serves as a versatile nanoplatform for encapsulating multiple enzymes, providing superior protection under harsh conditions and during recycling. The understanding of interfacial interactions, substrate diffusion, and enzyme conformation alteration within COF matrices opens up possibilities for designing ideal biocatalysts and broad applications of these nanosystems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Shanchao Tan, Kunpeng Wang, Qingdao Zeng, Yuhong Liu
Summary: Two-dimensional materials, particularly covalent organic frameworks (COFs), have shown promise in reducing friction-induced energy loss and wear in automotive and electronics industries. Surface COFs with smaller pore sizes exhibit lower friction coefficients due to their smoother potential energy surfaces. Furthermore, the porous structures of COFs make them suitable host templates for composite assemblies, which have potential applications in Micro-Electro-Mechanical Systems (MEMS).
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)