Article
Energy & Fuels
Nithin B. Kummamuru, Geert Watson, Radu-George Ciocarlan, Sammy W. Verbruggen, Pegie Cool, Pascal Van der Voort, Patrice Perreault
Summary: This study explores the potential of two hydrophobic porous materials in promoting methane clathrate formation. The results show that both materials can facilitate the formation of methane clathrates under mild operating conditions and have high methane storage capacities. Overall, the study concludes that these materials are effective promoters of methane clathrates, making clathrate-based methane storage and transport technology industrially viable.
Article
Energy & Fuels
Nathaniel Joyal, Yu-Che Chang, Mohammed Shonar, Vijaya Chalivendra, Caiwei Shen
Summary: Structural supercapacitors that carry mechanical loads and store electrical energy simultaneously have great potential. We have demonstrated a single-phase hydrate-based solid polymer electrolyte that improves ionic conductivity while maintaining high mechanical stiffness. This electrolyte can be used to develop more efficient structural supercapacitors and all-solid-state battery electrolytes.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Masakazu Matsumoto, Hideki Tanaka
Summary: The structure selectivity of mixed gas hydrates and group 14 clathrates is examined using statistical mechanical theories and the empirical rule on the topological constraint of the Frank-Kasper phases. The most stable structure is revealed by the generalized phase diagram, and the method developed here can estimate the phase behaviors of clathrate compounds in a wide range of thermodynamic conditions.
Article
Engineering, Environmental
Gaurav Bhattacharjee, Hari Prakash Veluswamy, Asheesh Kumar, Praveen Linga
Summary: Solidified Natural Gas (SNG) technology provides a compact and safe option for large-scale natural gas storage. Introducing thermodynamic promoters like THF into the classical methane-water system enables rapid gas uptake at moderate pressure and temperature. The study compares the stability of cylindrical mixed methane-THF (sII) and pure methane (sI) hydrate pellets, with results showing exceptional stability of sII hydrates and significant gas evolution from sI hydrates stored at different temperatures. Long-term stability testing of methane-THF (sII) hydrate pellets produced using fresh and seawater demonstrates the commercial viability of SNG technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Ningru Sun, Yanjun Li, Nianxiang Qiu, Shiyu Du
Summary: This article investigates the structural and mechanical properties of some nitride gas hydrates using DFT calculations. The equilibrium lattice structure, complete second-order elastic constants, and polycrystalline elasticity are determined. It is found that NH3, N2O, and NO hydrates exhibit high elastic isotropy but differ in shear characteristics. The study provides a theoretical foundation for understanding the structural evolution of clathrate hydrates under mechanical conditions.
Article
Thermodynamics
Jiwoong Seol
Summary: In this study, the thermodynamic promotion effect of nitroalkane large guest molecules (LGMs) on CH4 hydrates was investigated. The structural analysis confirmed the formation of different hydrate types with different LGMs. All nitroalkanes improved the equilibrium temperatures, with tBuNO2 showing the strongest promotion effect. The structural and thermodynamic results of this study provide valuable information for the development of CH4 storage and transport technologies.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Chemistry, Multidisciplinary
Jinjie Liu, Ran Fu, Yanwen Lin, Qiao Shi, Yisi Liu, Tong Li, Zhisen Zhang, Jianyang Wu
Summary: This study investigates the mechanical characteristics of CO2 hydrates with different types of water vacancy defects for the first time through molecular dynamics simulations. The results show that the mechanical properties of CO2 clathrate hydrate vary with the type of water vacancy, and there are various cage structures and cage transformation mechanisms. These findings are crucial for evaluating the formation and mechanical stability of CO2 hydrate-bearing sediments as well as CO2 geological storage by hydrate-based technologies.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Lanyun Wang, Xiaoran Lu, Yongliang Xu
Summary: This study found that adding 5-10% RNS-A can shorten the induction time during CO2 hydrate formation, and 6% RNS-A showed the best gas consumption and reaction time, making it the optimal concentration for CO2 capture and sequestration.
Article
Engineering, Chemical
Sadao Araki, Ryosuke Yamashita, Kang Li, Hideki Yamamoto
Summary: An amorphous silica hollow fiber was prepared by the phase inversion method, and the effects of calcination temperature on its properties were investigated. A silica CHA zeolite membrane was synthesized on the silica hollow fiber support with relatively high CO2 permeance and CO2/CH4 selectivity achieved. Membranes prepared using seeding method showed improved CO2/CH4 selectivity and permeance compared to conventional CHA zeolite membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Asheesh Kumar, Hari Prakash Veluswamy, Sanat Kumar, Rajnish Kumar, Praveen Linga
Summary: Clathrate hydrate-based sustainable technologies, such as solidified natural gas (SNG) technology, show great potential for storing natural gas. Experiments on mixed hydrates in a seawater environment reveal the promotional effect of seawater on hydrate formation and suggest the economic feasibility of using natural seawater to enhance SNG technology.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Jing Li, Jizhen Qi, Feng Jin, Fengrui Zhang, Lei Zheng, Lingfei Tang, Rong Huang, Jingjing Xu, Hongwei Chen, Ming Liu, Yejun Qiu, Andrew Cooper, Yanbin Shen, Liwei Chen
Summary: Researchers have developed a catholyte based on porous organic cages, which enables solid-state lithium batteries to have excellent performance. This catholyte is compatible with various cathode active materials and shows decent electrochemical performance at room temperature.
NATURE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Hao Chen, Ke-Feng Yan, Zhao-Yang Chen, Xiao-Sen Li, Yu Zhang, Chun-Gang Xu
Summary: This study systematically investigated the characteristics of host-guest interactions in gas hydrates using quantum mechanics calculations. It highlighted the significant impact of electrostatic interactions on stability, with molecules with higher maximum ESP values showing higher stabilization. The findings suggest that van der Waals volumes/surface areas and V-s,V-max values of guest molecules are key factors for gas hydrate stability.
Article
Chemistry, Physical
Yuanxia Zhang, Yan Bao, Wenbo Zhang, Ru Xiang
Summary: This study investigated the stabilization mechanism of Pickering emulsion using mesoporous hollow silica microspheres (MHSMs) as stabilizers. The results showed that smaller particle size and shell thickness of MHSMs can improve the stability of Pickering emulsion, and MHSMs with intermediate hydrophobicity and suitable oil/water ratio are favorable for stability. Increasing the concentration of MHSMs within a certain range can enhance the stability of Pickering emulsion, with the optimal concentration being 1.25 mg/mL. This research opens up possibilities for the fabrication of functional materials through Pickering emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Bhimanaboina Ramulu, Anki Reddy Mule, Shaik Junied Arbaz, Jae Su Yu
Summary: In this study, hierarchical feathers-like microsheet arrays were designed and incorporated into asymmetric supercapacitors (ASCs) using a simple and single-step hydrothermal approach. The resulting nickel/cobalt vanadate hydrates supported on conductive carbon cloth exhibited excellent cycling performance and high capacitance/capacity values. The ASCs assembled with the designed active material demonstrated high energy and power density, as well as remarkable cycling retention after a large number of cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Helen M. O'Connor, William J. Tipping, Julia Vallejo, Gary S. Nichol, Karen Faulds, Duncan Graham, Euan K. Brechin, Paul J. Lusby
Summary: The study of host-guest chemistry in coordination cages is of great importance for applications such as drug delivery, sensing, and catalysis. This paper demonstrates the use of various techniques to investigate the host-guest chemistry of a novel Pd2L4 cage, which has high affinity for selectively binding dicyanoarene guests through hydrogen bonding and other weak interactions. Additionally, Raman spectroscopy is shown to be a valuable tool for analyzing coordination cages, using alkyne and nitrile reporter functional groups.
INORGANIC CHEMISTRY
(2022)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)