Article
Materials Science, Multidisciplinary
Zakaria Saadi, Simon G. King, Jose Anguita, Vlad Stolojan, S. Ravi P. Silva
Summary: Thermoelectric materials offer a promising solution for recovering wasted energy, but their efficiency is low and the best materials are brittle, toxic, and expensive. This study demonstrates that flexible films of double-walled carbon nanotubes can achieve low thermal conductivity and high electrical conductivity, leading to the development of flexible, cheaper, and more efficient thermoelectric generators.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Andres Felipe Quintero-Jaime, Alessio Ghisolfi, Diego Cazorla-Amoros, Emilia Morallon
Summary: Covalent functionalization of MWCNTs and oMWCNTs with Ph2PCl was studied by cyclic voltammetry, resulting in different levels of phosphorus incorporation depending on the upper potential limit used, with simultaneous observation of chlorine incorporation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Construction & Building Technology
Laura Silvestro, Artur Spat Ruviaro, Paulo Ricardo de Matos, Fernando Pelisser, Daniela Zambelli Mezalira, Philippe Jean Paul Gleize
Summary: This study investigated the functionalization of carbon nanotubes (CNT) with 3-aminopropyltriethoxysilane (APTES) for application in cementitious nanocomposites. The results showed that APTES effectively functionalized the CNT, leading to significant improvements in mechanical performance when incorporated into the cementitious matrix.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Silvia Aidee Solorio-Rodriguez, Andrew Williams, Sarah Sos Poulsen, Kristina Bram Knudsen, Keld Alstrup Jensen, Per Axel Clausen, Pernille Hogh Danielsen, Hakan Wallin, Ulla Vogel, Sabina Halappanavar
Summary: This study aimed to determine the influence of single or multi-walled structures and surface functionalization on pulmonary toxicity of carbon nanotubes (CNTs) and to identify the underlying mechanisms. Mice were exposed to different doses of SWCNTs or MWCNTs, and inflammation and DNA damage were assessed. Transcriptomics analysis showed similar responses across all CNTs, with inflammation, cellular stress, metabolism, and DNA damage responses being affected. One pristine SWCNT was found to be the most potent and potentially fibrogenic, warranting further toxicity testing.
Article
Multidisciplinary Sciences
Jorg Schaller, Bei Wu, Wulf Amelung, Zhengyi Hu, Mathias Stein, Eva Lehndorff, Martin Obst
Summary: Rice cultivation requires high amounts of phosphorus (P), however, significant amounts of P may be retained by iron (Fe) oxides and become unavailable for plants. Additionally, rice cultivation has a high demand for silicic acid (Si), reducing the availability of Si after a short period of cultivation. A study of a 2000-year-old paddy chronosequence showed that Si limitation, observed after a few decades of rice cultivation, is limiting the availability of P. This is believed to be due to Si-induced changes in the speciation of Fe-phases in soil particles and competition between Si and P for binding sites. Proper management of Si availability could be a promising tool for improving P supply in paddy soils.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Gabrielle B. Novais, Mariana A. Dias, Adilson A. M. Santana, Thigna C. Batista, Maria N. Marques, Carlisson R. Melo, Ricardo L. C. Albuquerque Junior, Margarete Z. Gomes, Patricia Severino, Eliana B. Souto, Juliana C. Cardoso
Summary: This work focuses on the functionalization of SWCNTs and MWCNTs with two selected isoflavones and compares their physicochemical properties. Acidic treatment improved the dispersibility of both types of nanotubes, but SWCNTs still remained aggregated. However, MWCNTs showed increased dispersibility after acidic treatment. The functionalization with isoflavones was confirmed by improved dispersibility of the nanotubes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Yui Konno, Rina Morooka, Tatsunari Morishita, Pei Zhao, Naoto Miyasaka, Kazuki Ono, Akira Noda, Daiki Uchida, Ren Iwasaki, Michio Yamada, Masahiro Ehara, Yutaka Maeda
Summary: Functionalization of single-walled carbon nanotubes (SWNTs) using a series of bromoalkanes and dibromoalkanes with different tether lengths was investigated. Longer tether lengths (six or more) resulted in SWNT adducts with two new photoluminescence (PL) peaks, while shorter tether lengths (3-5) produced single peaks. The formation mechanism of functionalized adducts was found to be influenced by the tether length, with shorter tethers tending to produce kinetic products.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Sandra Zarska, Damian Kulawik, Volodymyr Pavlyuk, Piotr Tomasik, Alicja Bachmatiuk, Rafal Szukiewicz, Wojciech Ciesielski
Summary: The bromination of multi-walled carbon nanotubes was conducted using vapor bromine in a closed vessel and intensive stirring for up to 14 days. Physicochemical analyses confirmed bromine covalently binding to the nanotubes and the formation of inclusion complexes. The best results were obtained after 10 days of bromination, with a content of covalently bound bromine of 0.68 at%.
Article
Polymer Science
Mariem Saoudi, Boubaker Zaidi, Abdullah A. Alotaibi, M. G. Althobaiti, Eid M. Alosime, Ridha Ajjel
Summary: The structure and optical properties of PANI/SWCNTs nanocomposite were studied using various characterization methods and theoretical calculations. The doping and functionalization processes were found to improve the properties of the resulting nanocomposite significantly. The resulting interpenetrating network exhibited an optical gap of nearly 2.28 eV and showed potential for applications in photovoltaics and advanced oxidation processes.
Article
Polymer Science
Vijay Patel, Unnati Joshi, Anand Joshi, Blessing Kudzai Matanda, Kamlesh Chauhan, Ankit D. Oza, Diana-Petronela Burduhos-Nergis, Dumitru-Doru Burduhos-Nergis
Summary: This manuscript presents an experimental investigation of the friction and wear properties of PMMA nanocomposites reinforced with functionalized MWCNTs. The results indicate that the MWCNTs can effectively enhance the tribological performance of PMMA. The optimal MWCNT loading was found to be 0.5 wt.%, resulting in the lowest friction coefficient and wear rate.
Article
Chemistry, Multidisciplinary
Andrzej Dzienia, Dominik Just, Patrycja Taborowska, Anna Mielanczyk, Karolina Z. Milowska, Shunji Yorozuya, Sadahito Naka, Tomohiro Shiraki, Dawid Janas
Summary: The inability to purify nanomaterials such as single-walled carbon nanotubes (SWCNTs) to the desired extent hampers the progress in nanoscience. This article reports a method for high-yield isolation of monochiral (7,3) SWCNTs through self-synthesis of poly(9,9-dioctylfluorene-alt-benzothiadiazole), in-depth elucidation of the extraction process, and mixed-solvent engineering. The combination of toluene and tetralin affords a separation medium of unique properties, wherein both high yield and exceptional purity can be attained simultaneously.
Article
Chemistry, Physical
Tomitsugu Taguchi, Shunya Yamamoto, Hironori Ohba
Summary: The study successfully synthesized double-thick-walled (DTW) silicon carbide (SiC) nanotubes with unique structures and properties. Experimental results showed that DTW SiC nanotubes with perfect structures can only be synthesized with an MWCNT wall thickness of at least 50 nm.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Arjun Menon, Peter W. Muenich, Pawel Wagner, David L. Officer, Dirk M. Guldi
Summary: The study describes a novel non-covalent electron donor-acceptor system involving metalloporphyrins and SWCNT, with microscopy and spectroscopy confirming efficient charge-transfer interactions. The fastest charge-separation and recombination dynamics were observed in 2-SWCNT, showing strong interactions and fast excited state decay.
Article
Biotechnology & Applied Microbiology
Jamie E. Rossi, Christopher M. Schauerman, Colleen C. Lawlor, Cory D. Cress, Matthew J. Ganter, Andrew R. Bucossi, Brian J. Landi
Summary: This study investigates the deep-sea survivability and biofouling characteristics of corrosion-resistant bulk carbon nanotubes (CNTs) after being deployed in the Atlantic Ocean for 12 months. The results show that cyanoacrylate coatings increase the durability of CNTs and reduce biofouling. Acid purification successfully restores the tensile strength and electrical transport properties of the CNTs. Therefore, CNTs are electrochemically stable in saltwater environments and resilient to biofouling conditions after extended exposure.
Article
Biotechnology & Applied Microbiology
Yadong Sun, Jiachi Teng, Yi Kuang, Shengxiang Yang, Jiquan Yang, Hongli Mao, Zhongwei Gu
Summary: The functionalized carbon nanotubes have improved dispersibility and conductivity, making them suitable for use in shape memory polymers with potential applications in various fields.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xufeng Wang, Yajie Song, Xin Jiang, Qingsong Liu, Jidong Dong, Jian Wang, Xin Zhou, Bing Li, Geping Yin, Zaixing Jiang, Jiajun Wang
Summary: The complicated interfacial problems of poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) at high voltages hinder the practical applications for high-energy-density all-solid-state lithium batteries (ASSLBs). This study investigates the failure mechanisms of ASSLBs with LiNi0.6Co0.2Mn0.2O2 (NCM)-PEO and proposes a method to construct an interfacial nanolayer with aromatic polyamide (APA) to improve the performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
A. K. Sanchez-Hernandez, R. Lozano-Rosas, J. J. Gervacio-Arciniega, Jian Wang, M. J. Robles-Aguila
Summary: This study reports the synthesis of HAp/TiO2 composites using sol-gel and co-precipitation methods, and characterizes their structure using XRD and STXM techniques. The results show that the mixture of phases in the two materials can be identified separately once the composite is formed.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Zhi-Lai Chi, Guang-Hui Yu, H. Henry Teng, Hai-Gang Liu, Jian Wang, Cong-Qiang Liu, Qi-Rong Shen, Geoffrey Michael Gadd
Summary: Fungal-mineral interactions that alleviate stress from organic pollutants have been studied, and it was found that fungal biomineralization can trigger the formation of an ultrathin exoskeleton enriched with iron oxides and biomolecules. This nanobiohybrid system enhances the fungal degradation of bisphenol A through molecular-level trade-offs. The study provides important insights into fungal biomineralization and the coevolution of the Earth's lithosphere and biosphere.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Jinhua Li, Peiyu Liu, Nicolas Menguy, Xingliang Zhang, Jian Wang, Karim Benzerara, Lianjun Feng, Lei Sun, Yue Zheng, Fanqi Meng, Lin Gu, Eric Leroy, Jialong Hao, Xuelei Chu, Yongxin Pan
Summary: Biosilicification, the process of forming biological structures composed of silica, is widely distributed among eukaryotes and plays a significant role in global biogeochemical cycles. Recent discoveries of silica transporter genes and silicon accumulation in bacteria suggest that prokaryotes, particularly in ancient times, may also have played a previously unrecognized role in the Si cycle. This study reports the identification of a magnetotactic bacterium that forms intracellular, amorphous silica globules, revealing intracellularly controlled silicification within prokaryotes and its potential influence on the biogeochemical Si cycle during early Earth history.
Article
Chemistry, Physical
Shuo Yan, Sara Abouali, Chae-Ho Yim, Jigang Zhou, Jian Wang, Elena A. Baranova, Arnaud Weck, Venkataraman Thangadurai, Ali Merati, Yaser Abu-Lebdeh
Summary: Solid-state lithium-metal batteries with high resistance at the garnet electrolyte/cathode interface can be improved by introducing a carbonate-based liquid electrolyte. The role of the liquid electrolyte at the interface was thoroughly studied, revealing the formation and chemical composition of the solid-liquid electrolyte interphase and the cathode-electrolyte interphase. The liquid electrolyte was found to decompose during cycling, forming fluoride species, oxides, and carbonates as the main components of the in situ-formed solid-liquid electrolyte interphase. The synergy between the solid-liquid electrolyte interphase and the cathode-electrolyte interphase resulted in high-performance lithium garnet | liquid electrolyte | nickel manganese cobalt oxide cells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Multidisciplinary Sciences
Qing-Song Liu, Han-Wen An, Xu-Feng Wang, Fan-Peng Kong, Ye-Cai Sun, Yu-Xin Gong, Shuai-Feng Lou, Yi-Fan Shi, Nan Sun, Biao Deng, Jian Wang, Jia-Jun Wang
Summary: A tortuosity-gradient thick electrode was developed to promote fast ion transport and mitigate the heterogeneous solid-state reaction, leading to excellent electrochemical performance for solid-state batteries.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Physical
Jijian Xu, Travis P. Pollard, Chongyin Yang, Naveen K. Dandu, Sha Tan, Jigang Zhou, Jian Wang, Xinzi He, Xiyue Zhang, Ai-Min Li, Enyuan Hu, Xiao-Qing Yang, Anh Ngo, Oleg Borodin, Chunsheng Wang
Summary: Liquefying halogen or inter-halogen compounds is crucial for achieving high reversibility in lithium halide cathodes. This can be done using interhalogen compounds with different electronegativity or by lowering the temperature. By demonstrating reversible LiCl conversion-intercalation chemistry in organic electrolytes, high reversible specific capacity is achieved in LiCl-LiBr-graphite cathodes at a lower cost than transition metal oxide cathodes.
Article
Nanoscience & Nanotechnology
Syed Q. A. Shah, Muhammet Annaorazov, Gaurab Rimal, Jian Wang, Mario F. Borunda, Jinke Tang, Andrew J. Yost
Summary: Using pulsed laser deposition, a EuO1-x film was deposited on a Si(001) substrate with a MgO buffer, and compared to a heterostructure with an additional BaTi2O5 film on top of the EuO1-x surface. XRD analysis showed that the films had a preferred EuO(111) orientation and the presence of EuSi2, suggesting diffusion of Si or Eu across the MgO buffer layer. The EuO1-x films exhibited a ferromagnetic signature and temperature-dependent exchange bias, while the BaTi2O5 films showed an antiferromagnetic behavior, indicating an origin at the BaTi2O5/EuO1-x interface.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Spectroscopy
Xinye Yuan, Tianxiao Sun, Elena A. Baranova, Yaser Abu-Lebdeh, Jigang Zhou, Jian Wang, Huaidong Jiang
Summary: CO2 electrochemical reduction (CO2ER) is a promising technology for converting CO2 into useful chemicals and fuels, reducing greenhouse gas emissions. Cu nanoparticles-based catalysts are an excellent choice for CO2ER due to their high conductivity and catalytic activity. This study used STXM and spectro-ptychography to investigate the chemical and electronic structural changes of CuAg nanocatalysts during CO2ER. The observed self-aggregation and oxidation of Cu species provide insights into the loss of catalytic activity in CuAg nanocatalysts after CO2ER.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Spectroscopy
Tianxiao Sun, Shengnan Zuo, Bo He, Xinye Yuan, Guixiang Li, Jigang Zhou, Markus Weigand, Antonio Abate, Jian Wang
Summary: The structural and compositional properties of tin halide perovskites were investigated using scanning transmission soft X-ray microscopy (STXM) and spectro-ptychography techniques. The study revealed the spectral characteristics of main components in Sn-based perovskites and differences between samples with and without adding an ionic liquid. Chemical imaging showed that the ionic liquid-treated sample exhibited a more homogeneous perovskite phase, and XANES resonance features supported the protective role of the ionic liquid in perovskite formation and stabilization.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Multidisciplinary Sciences
Yanfei Zhu, Qi Zhang, Yun Zheng, Gaoran Li, Rui Gao, Zhihong Piao, Dan Luo, Run-Hua Gao, Mengtian Zhang, Xiao Xiao, Chuang Li, Zhoujie Lao, Jian Wang, Zhongwei Chen, Guangmin Zhou
Summary: Composite-polymer-electrolytes (CPEs) embedded with an unsaturated coordination Prussian blue analog (UCPBA) filler demonstrate fast and preferential Li+ conduction through a chemically stable electrolyte/filler interface (EFI). The unsaturated Co-O coordination in UCPBA ensures a stable EFI and prevents side reactions, while the Lewis-acid metal centers attract the Lewis-base anions of Li salts, enhancing Li+ disassociation and transference number (tLi+). These CPEs exhibit high room-temperature ionic conductivity and excellent cyclability and capacity retention for solid-state lithium-sulfur batteries.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Hanwen An, Qingsong Liu, Biao Deng, Jian Wang, Menglu Li, Xin Li, Shuaifeng Lou, Jiajun Wang
Summary: The design of practical cathodes with high areal capacity in polymer-based all-solid-state batteries remains challenging due to the absence of an effective guiding principle. This study proposes a dynamically stable cathode design with a fully covered surface, which effectively mitigates interface failure and enables long-term cycling. The study also reveals the importance of local state of charge and porosity of the cathode in affecting interfacial properties and ion transport.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Spectroscopy
Chunyang Zhang, Jiatang Chen, Hao Yuan, Jian Wang, Tianxiao Sun, Drew Higgins, Adam P. Hitchcock
Summary: Soft X-ray spectro-ptychography was used to measure nickel-nitrogen-carbon electrocatalysts with atomically dispersed active sites. The spatial resolution of ptychography was improved compared to scanning transmission X-ray microscopy (STXM). Chemical mapping of key components was achieved through fits of reference spectra to absorption signals derived from ptychographic reconstruction. This study highlights the added value of spectro-ptychography for electrocatalyst research compared to STXM.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Spectroscopy
Joseph Stitsky, Jian Wang, Stephen Urquhart
Summary: Spectroptychography is used to improve the spatial resolution of x-ray spectromicroscopy for finer chemical microanalysis. Near edge X-ray absorption fine structure (NEXAFS) provides chemical sensitivity, while ptychography offers additional phase information and potential chemical information. This paper explores the chemical information available in phase for silicon dioxide nanospheres.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Chemistry, Multidisciplinary
Bonho Koo, Jinkyu Chung, Juwon Kim, Dimitrios Fraggedakis, Sungjae Seo, Chihyun Nam, Danwon Lee, Jeongwoo Han, Sugeun Jo, Hongbo Zhao, Neel Nadkarni, Jian Wang, Namdong Kim, Markus Weigand, Martin Z. Bazant, Jongwoo Lim
Summary: Li-ion battery electrodes exhibit a resistance increase during high-rate lithiation, which is poorly understood. Li transfer kinetics at the surface determines the hysteresis. Surface and bulk phase separation strongly depends on the direction and magnitude of the current. Dynamical asymmetry between lithiation and delithiation is attributed to autoinhibitory Li-rich and autocatalytic Li-poor domains.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
