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Standalone polymer ‘litmus-paper’-like sensor for specific hydrogen detection: Integrating naked-eye and fluorescence techniques

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International Journal of Hydrogen Energy 2025年 137卷 397-405页

作者： Luzzatto, Yonatan Alatawna, Amr Sror, Gal Mendelson, Orit Pevzner, Svetlana Regev, Oren Department of Chemical Engineering Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemical Engineering and Blechner Center for Industrial Catalysis and Process Development Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemistry Nuclear Research Centre-Negev Beer-Sheva84190 Israel Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the Negev Beer-Sheva8410500 Israel

Hydrogen is a promising renewable fuel with broad applications, but its flammability and tendency to leak through metals create safety challenges, necessitating reliable, standalone, and affordable sensing systems. Current hydrogen sensors are often costly, suffer from cross-sensitivity to gases, and are typically not standalone. Our sensing approach is based on the hydrogenation of the fluorophore 1,4-bisphenylethnylbenzene (PEB). This approach encompasses two levels of visual sensing: rapid detection via surface color change and quantitative "litmus paper"-like analysis and cross-section observation, which provides a hydrogen exposure history and other parameters such as hydrogen partial pressure and exposure time. The sensor detection limit is 1 mbar ( © 2025 Hydrogen Energy Publications LLC

关键词： Hydrogenolysis

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g-C3N4/BaTiO3/PVDF membrane photocatalytic degradation of tetracycline

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Journal of Industrial and engineering Chemistry 2025年

作者： Gan, Jiahao Wang, Huijie Li, Jinze Song, Xianghai Liu, Xin Jiang, Jizhou Huo, Pengwei Institute of Green Chemistry and Chemical Technology School of Chemistry & Chemical Engineering Jiangsu University Zhenjiang212013 China China Construction Eco-Environmental Protection Technology Co Ltd Jiangsu Suzhou215128 China School of Materials Science and Engineering State Key Laboratory of Green and Efficient Development of Phosphorus Resources Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Novel Catalytic Materials of Hubei Engineering Research Center Wuhan Institute of Technology Wuhan430205 China

Environmental pollution poses a major hurdle to sustainable development, and harnessing solar energy for water treatment has emerged as a promising solution. In this study, flexible, macroporous photocatalytic membranes were developed by combining photocatalysis with membrane separation technology and hydrogen peroxide (H2O2), aiming to improve the degradation efficiency of tetracycline (TC). The g-C3N4/BaTiO3/PVDF photocatalytic membranes were fabricated using a phase inversion method, which successfully addressed challenges such as catalyst agglomeration and recovery difficulties, surpassing traditional membrane separation methods. Additionally, the g-C3N4/BaTiO3 photocatalyst exhibited excellent compatibility with PVDF. Under 120 min of xenon lamp irradiation, the membranes achieved a TC degradation efficiency of 90.63 %. These membranes also demonstrated remarkable permeability, and they maintained high stability and reusability after five degradation cycles, showcasing their promising potential for photocatalytic water treatment applications. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Membrane technology

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Active metals decorated NiCo2O4 yolk-shell nanospheres as nanoreactors for catalytic reduction of nitroarenes and azo dyes

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Chemosphere 2024年 350卷

作者： Wang, Dong Li, Ping Xi, Jiangbo School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry Wuhan Institute of Technology Wuhan430073 China Jiangxi Key Laboratory of Surface Engineering School of Materials and Energy Jiangxi Science and Technology Normal University Nanchang330013 China

Transition-metal oxides (TMOs) have received a great deal of research attention and have been widely used in a variety of fields. However, conventional TMOs do not possess high specific surface area, sufficient active site on their surfaces, and limited their applications in catalysis. This study presents a two-step method for synthesizing active metal (M) decorated NiCo2O4 (M/NiCo2O4, M = Pd or Cu) nanospheres with yolk-shell nanostructures. Taking advantage of the unique morphology and the combination of dual active components (i.e., active NiCo2O4 substrate and decorated active metal), the as-prepared M/NiCo2O4 yolk-shell nanospheres can be employed as nanoreactors in the organic reactions. In catalyzing the reduction of a representative nitroarene (i.e., 4-NP) by NaBH4, the Pd/NiCo2O4 nanoreactors exhibit a superior catalytic efficiency to their counterparts (Cu/NiCo2O4 and NiCo2O4). The turnover frequency is much higher than that of various TMOs supported nanocatalysts have been reported over the past five years. Furthermore, the Pd/NiCo2O4 nanoreactors show excellent stability and common applicability of the reduction of various substituted nitrobenzenes and azo dyes. This work provides new rational design concept and preparation strategy for efficient nanoreactors with dual active components and sheds light on the practical application of chemical reactions. © 2024 Elsevier Ltd

关键词： Nanospheres

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Recent advances of covalent organic frameworks-based photocatalysts:Principles,designs,and applications

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Chinese Journal of Catalysis 2025年第3期70卷 142-206页

作者： Hongjun Dong Chunhong Qu Chunmei Li Bo Hu Xin Li Guijie Liang Jizhou Jiang Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province Institute of Green Chemistry and Chemical TechnologySchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina Baicheng Normal University Baicheng 137000JilinChina Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and Utilization of Ministry of Agriculture and Rural AffairsKey Laboratory for Biobased Materials and Energy of Ministry of EducationCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205HubeiChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053HubeiChina

Covalent organic frameworks(COFs)semiconductor materials have garnered significant attention in solar to chemical energy conversion owing to their unique properties,including structural tunability,pre-design capability,large surface area,abundant pore structures,high crystallinity,excellent chemical stability,suitable energy-band structure,fast charge carrier transfer and so *** intrinsic features endow COFs with the remarkable candidates for various photocatalytic applications including photocatalytic H_(2) generation from water reduction,CO_(2) reduction,degradation of organic pollutants,N_(2) fixation,H_(2)O_(2) evolution,and even organic ***,this review comprehensively summarizes the recent advancements in COF-based materials for the above photocatalytic reactions,including the historic overview of the COF in the photocatalysis field,the fundamentals and design philosophy of COF-based photocatalysts,the advances of synthesis strategies,the structural characteristics and diversities,the practical applications in various photocatalytic fields as well as the challenges and future development direction in terms of COFs material and application *** sincerely hope this review can offer symbolic guidelines for future development COF semiconductor materials in this promising field.

关键词： Covalent organic framework Photocatalysis Structural feature Energy conversion Environmental purification

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In-situ Construction of Sulfur-doped g-C_(3)N_(4)/defective g-C_(3)N_(4) Isotype Step-scheme Heterojunction for Boosting Photocatalytic H_(2) Evolution

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Chinese Journal of Structural Chemistry 2022年第1期41卷 25-33页

作者： Jing Zou Guodong Liao Jizhou Jiang Zhiguo Xiong Saishuai Bai Haitao Wang Pingxiu Wu Peng Zhang Xin Li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Semiconductor Electronic Special Gas of Hubei Engineering Research Center JingzhouHubei 434000China State Center for International Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

The rational construction of a high-efficiency stepscheme heterojunctions is an effective strategy to accelerate the photocatalytic H_(2).Unfortunately,the variant energy-level matching between two different semiconductor confers limited the photocatalytic ***,a newfangled graphitic-carbon nitride(g-C_(3)N_(4))based isotype step-scheme heterojunction,which consists of sulfur-doped and defective active sites in one microstructural unit,is successfully developed by in-situ polymerizing N,N-dimethylformamide(DMF)and urea,accompanied by sulfur(S)***,the polymerization between the amino groups of DMF and the amide group of urea endows the formation of rich *** propulsive integration of S-dopants contributes to the excellent fluffiness and dispersibility of lamellar g-C_(3)N_(4).Moreover,the developed heterojunction exhibits a significantly enlarged surface area,thus leading to the more exposed catalytically active *** importantly,the simultaneous introduction of S-doping and defects in the units of g-C_(3)N_(4) also results in a significant improvement in the separation,transfer and recombination efficiency of photo-excited electron-hole ***,the resulting isotype step-scheme heterojunction possesses a superior photocatalytic H_(2) evolution activity in comparison with pristine g-C_(3)N_(4).The newly afforded metal-free isotype step-scheme heterojunction in this work will supply a new insight into coupling strategies of heteroatoms doping and defect engineering for various photocatalytic systems.

关键词： sulfur-doping defects isotype step-scheme heterojunction g-C_(3)N_(4) photocatalytic H_(2)

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Flow of lubricated granular material on an inclined plane

arXiv

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arXiv 2022年

作者： Ghodake, Ravindra S. Doshi, Pankaj Orpe, Ashish V. Chemical Engineering and Process Development Division CSIR-National Chemical Laboratory Pune411008 India Worldwide Research and Development Pfizer Products India Private Limited Mumbai400051 India Ghaziabad201002 India

We have studied the gravity driven flow of spherical shaped, millimetric sized granular material coated with aspherical, micron-sized, near frictionless lubricant particles. Experiments were performed on an inclined plane using two different sized particles for varying concentrations of the lubricant. The particle volumetric flow rate exhibits a non-monotonic behavior with increasing lubricant concentration. It shows an increase at smaller lubricant concentration followed by a decrease at higher lubricant concentration. The lubricant particles adheres to the granular particle surface thereby reducing the inter-particle friction. However, presence of lubricant particles at higher concentration damps out inter-particle collision thereby reducing the inter-particle momentum transfer. Non-monotonicity in the observed behavior is then conjectured to arise due to competing effects of inter-particle friction and inter-particle collision. The present work and the overall observed behavior therein provides a simple experimental system to characterise the effects of added lubricant material in pharmaceutical and other relevant industrial applications. Copyright © 2022, The Authors. All rights reserved.

关键词： Friction

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Exploring Uncommon Fe-Oxides in Non-Metallic Inclusions in Ultra-High-Strength Steel

SSRN

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SSRN 2024年

作者： Rani, Ekta Gupta, Vandna K. Gyakwaa, Francis Kharbach, Mourad Singh, Harishchandra Alatarvas, Tuomas Martinelli, Anna Fabritius, Timo Huttula, Marko Nano and Molecular Systems Research Unit University of Oulu P.O. Box 3000 Finland Department of Chemistry and Chemical Engineering Chalmers University of Technology Gothenburg412 96 Sweden Process Metallurgy Research Unit University of Oulu P.O. Box 3000 Finland University of Helsinki Finland

Investigating non-metallic inclusions within ultra-high-strength-steel via conventional methods is a known: however, the challenge is to obtain chemical information of such inclusions at the sub-micrometer level. In this context, probing Fe-based oxide in inclusions is a vital aspect for guiding steel’ performance. The vibrational properties of sub micrometer size Fe-based oxides were investigated by Raman mapping along with chemometric analysis with the aim of probing their chemical composition. Highly contrasted Raman spectra were recorded from several inclusions embedded at different spatial locations. The observed spectral features were identified as specific markers of hematite (α-Fe2O3) and magnetite (Fe3O4). Their unambiguous assignment has been inferred by comparing our experimental findings with the literature data recorded either in single crystals of iron oxides or oxyhydroxides. Micro-Raman spectroscopy is proven to be a reliable, cost-effective, and non-invasive tool for the unambiguous identification of subsurface regions of steel. © 2024, The Authors. All rights reserved.

关键词： K-means clustering

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Improving stability of MXenes

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Nano research 2022年第7期15卷 6551-6567页

作者： Jizhou Jiang Saishuai Bai Jing Zou Song Liu Jyh-Ping Hsu Neng Li Guoyin Zhu Zechao Zhuang Qi Kang Yizhou Zhang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyHunan UniversityChangsha 410082China Department of Chemical Engineering “National Taiwan University”Taipei 10617TaiwanChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing 210044China Department of Chemistry Tsinghua UniversityBeijing 100084China Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240China

Due to their superior hydrophilicity and conductivity,ultra-high volumetric capacitance,and rich surface-chemistry properties,MXenes exhibit unique and excellent performance in catalysis,energy storage,electromagnetic shielding,and life *** they are derived from ceramics(MAX phase)through etching,one of the challenges in MXenes preparation is the inevitable exposure of metal atoms on their surface and embedding of anions and *** the as-obtained MXenes are always in a thermodynamically metastable state,they tend to react with trace oxygen or oxygen-containing groups to form metal oxides or degrade,leading to sharply declined activity and impaired ***,improving the stability of MXenesbased materials is of practical significance in relevant ***,there lacks a comprehensive review in the literature on relevant *** help promote the wide applications of MXenes,we review from the following aspects:(i)insights into the factors affecting the stability of MXenes-based materials,including oxidation of MXenes flakes,stability of MXenes colloidal solutions,and swelling and degradation of MXenes thin-film,(ii)strategies for enhancing the stability of MXenes-based materials by optimizing MAX phase synthesis and modifying the MXenes preparation,and(iii)techniques for further increasing the stability of freshly prepared MXenes-based materials via controlling the storage conditions,and forming shielding on the surface and/or edge of MXenes ***,some outlooks are proposed on the future developments and challenges of highly active and stable *** aim to provide guidance for the design,preparation,and applications of MXenes-based materials with excellent stability and activity.

关键词： MXenes stability oxidation swelling and degradation shielding strategies

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Isotherm Model Discrimination for Multimodal Chromatography Using Mechanistic Models Derived from High-Throughput Batch Isotherm Data: (Ii) Multimodal Anion-Exchange

SSRN

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SSRN 2023年

作者： Altern, Scott Howard Welsh, John P. Kocot, Andrew J. Lyall, Jessica Yang Burgess, Sean Kumar, Vijesh Williams, Chris Lenhoff, Abraham M. Cramer, Steven M. Department of Chemical and Biological Engineering Rensselaer Polytechnic Institute TroyNY United States Biologics Process Research and Development Merck & Co. Inc. RahwayNJ United States Purification Development Genentech South San FranciscoCA United States Department of Chemical and Biomolecular Engineering University of Delaware NewarkDE United States

While column modeling has been long studied for single-mode chromatographic systems, its application for multimodal systems has been limited. Although a range of isotherm formalisms have been applied to multimodal chromatography, no direct comparisons of their efficacies have been performed. This results in a lack of clarity with respect to which isotherm models should be employed and is a clear obstacle in modeling of multimodal chromatography. In this paper, a set of isotherm formalisms with ranging complexities, accounting for electrostatic interactions, hydrophobic interactions, and thermodynamic activities, were examined for their efficacy in fitting batch isotherm data as well as predicting column elution behavior. Batch isotherm data was generated for an array of salt conditions for Capto Adhere, a multimodal anion-exchange resin, using a mAb. Subsets of the batch data were then created, corresponding to the nonlinear region of the isotherm and the full range of protein loadings. Each set of batch data was fit twenty times with each isotherm formalism, which resulted in a distribution of isotherm parameter values. The models were next investigated for their accuracy in predicting changes in peak shape and protein recovery losses in linear salt gradients with respect to gradient slope. A scoring metric was then employed to evaluate the fitting and predictive efficacies for each isotherm formalism. In addition, the Akaike information criteria was used to aid in model selection by accounting for their predictive abilities and relative complexities. Sensitivity analyses were subsequently conducted to determine the contributions of individual isotherm parameters to the outputs of column predictions and batch data fits. A key finding of this investigation was the importance of the salt-protein activity coefficient parameter which dramatically affected the batch isotherm fits and column elution profiles. Parametric studies then demonstrated that this parameter singl

关键词： Monoclonal antibodies

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Analysis of MXene in water treatment: Data sources and trends

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Journal of Industrial and engineering Chemistry 2025年

作者： Chen, Linfeng Wang, Yongxin Jiang, Xiaowen Ding, Jing Yan, Hui Guo, Lei Dai, Jinguo Al-Anazi, Abdulaziz Deng, Fengxia Jiang, Jizhou National Engineering Research Center for Safe Disposal and Resources Recovery of Sludge School of Environment Harbin Institute of Technology Harbin150090 China Zhongtian Hechuang Energy Co. Ltd. Inner Mongolia Autonomous Region 017000 China Safe Drinking Water and Sewage Disposal Technology Research and Development Center Inner Mongolia Autonomous Region 017000 China Jiangsu Youjia Ecological Environment Technology Co. Ltd. Jiangsu Province Nantong City226300 China Department of Chemical Engineering College of Engineering King Saud University P. O. Box 800 Riyadh11421 Saudi Arabia School of Environmental Ecology and Biological Engineering School of Chemical Engineering and Pharmacy Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Novel Catalytic Materials of Hubei Engineering Research Center Wuhan Institute of Technology Wuhan430205 China

In the context of global environmental challenges, such as emerging pollutants, the development of advanced materials for environmental remediation has become a critical area of research. Among these materials, MXene has shown promising potential in water treatment technologies. Previous reviews have primarily focused on the basic applications and properties of MXene, often overlooking the latest advancements in material optimization. This review aims to bridge these gaps by providing a comprehensive update on the recent innovations in MXene research, particularly in the context of water treatment using bibliometric methodology. The data sources and keyword processing of MXene water treatment applications were elaborated at the beginning, followed by an in-depth analysis of its applications in various water treatment processes. Subsequently, the cutting-edge modifications and improvements in MXene materials, such as hybridization with other nanostructures and the application of AI-driven design for performance optimization, are explored. The review concludes with an examination of the environmental impacts and sustainability aspects of MXene-based technologies. By offering a detailed overview of the current state and future perspectives of MXene, this review fills a crucial knowledge gap and serves as a valuable resource for researchers and practitioners in the field of material science and environmental engineering. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Environmental remediation

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