Article
Food Science & Technology
K. C. Yadav, Anish Dangal, Santosh Thapa, Samiksha Rayamajhi, Krishna Chalise, Lila Devi Shiwakoti, Ramesh Shiwakoti, Nirat Katuwal
Summary: In this study, Lapsi fruit leather was prepared and its nutritional, phytochemicals, and sensorial properties were studied. Different samples with varying proportions of fruit pulp and sugar were prepared and analyzed. Sample B had higher amounts of crude fat, protein, fiber, and ash, while sample A had higher carbohydrate and energy values. Sample B was also rich in phytochemicals. Drying behavior and moisture diffusivity varied among the samples. Sample C was preferred by the panelists for its taste, flavor, texture, and overall acceptability. This study suggests that underutilized Lapsi fruit can be processed into nutritionally rich fruit leather with high consumer acceptance.
INTERNATIONAL JOURNAL OF FOOD PROPERTIES
(2022)
Article
Chemistry, Multidisciplinary
Yanbo Wang, Yiqing Chen, Hongwei Zhao, Lixiang Li, Dongying Ju, Cunjing Wang, Baigang An
Summary: This study demonstrates the successful synthesis of biomass-derived porous carbon with a good balance between a high specific surface area and mesopore volume. By tuning the mesopore-micropore structure through precarbonization and activation processes, the carbon material shows enhanced electrochemical performance in terms of capacitance and cycling stability.
Article
Chemistry, Analytical
Zihong Zeng, Xiaojie Tian, Yunpu Wang, Xian Cui, Qi Zhang, Leilei Dai, Yuhuan Liu, Rongge Zou, Jun Chen, Jiyan Liu, Roger Ruan
Summary: This study prepared an Fe-modified biochar catalyst for microwave catalysis pyrolysis of corn cobs, which promoted the production of phenolic compounds and showed good catalytic stability.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Environmental Sciences
Min Hu, Wenhao Wu, Daohui Lin, Kun Yang
Summary: In this study, a mesopore-rich activated carbon (KAC) with high surface area was used as an adsorbent to investigate the adsorption of fulvic acid (FA). The results showed that KAC exhibited better adsorption capacity for FA compared to previous studies on biochars (BCs) and activated carbons (ACs), and the negative pH effect on adsorption performance was also weaker. Additionally, KAC was capable of adsorbing FA fractions with various molecular weights, higher aromaticity, and higher polarity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Lulu Chai, Pingyuan Wang, Xingyu Liu, Yanzhi Sun, Xifei Li, Junqing Pan
Summary: Accurate control of micropore/mesopore ratio through a combination of methods leads to hierarchical carbon materials with ultra-large capacitance and extra-high rate performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Biochemistry & Molecular Biology
Dorota Paluch, Aleksandra Bazan-Wozniak, Agnieszka Nosal-Wiercinska, Robert Pietrzak
Summary: In this study, activated carbons were produced from caraway seeds using different activators. Comprehensive analyses were conducted on the resultant activated carbons, and adsorption tests were carried out for methylene blue and methyl red sodium salt. The specific surface area of the obtained adsorbents ranged from 269 to 926 m2/g. The activated carbons activated by potassium carbonate showed the highest specific surface area development and the greatest sorption capacity against the tested impurities. The Langmuir and Freundlich equations were employed to characterize the adsorption model.
Article
Thermodynamics
Sergio Acevedo, Liliana Giraldo, Juan Carlos Moreno-Pirajan
Summary: This research conducted a calorimetric evaluation of activated carbon-type adsorbent solids prepared by chemical activation of African palm shells with Fe(NO3)(3) and Cu(NO3)(2) salts. The immersion enthalpy values of porous materials varied with different immersion liquids, chemical agents, and concentrations. The BET areas and pore volumes of the obtained adsorbent solids increased proportionally to the increase in immersion enthalpy values, showing variations in textural and chemical characteristics of porous solids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Wenli Fan, Guangxi Sun, Qi Wang, Fan Yang, Yingxin Gao, Min Yang
Summary: This study investigated the role of activated carbon properties in the adsorption of effluent organic matter (EfOM) from bio-treated coking wastewater. Commercial powdered activated carbons (PACs) with different pore structures, surface functional groups, and surface charges were used. The results showed that the adsorption of EfOM depended on its molecular size, with biopolymers being adsorbed by macropores and humics being adsorbed by mesopores. PACs with higher mesopore volume, fewer acidic groups, and higher isoelectric point were found to be more effective in removing EfOM.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Ignacio Campello Gomez, Orlando F. Cruz Jr, Joaquin Silvestre-Albero, Carlos R. Rambo, Manuel Martinez Escandell
Summary: In this study, activated carbons were synthesized from different precursors using KOH and mixtures of KOH and KCl as activating agents. The addition of KCl was found to increase the surface area and activation yield in all the samples. Thermodynamic and mass spectrometry studies revealed that KCl did not act as an activating agent, but promoted the solubilization of secondary products, thereby enhancing the contact of KOH and carbon particles and increasing the activation efficiency. Based on mass spectroscopy results and thermodynamic calculations, four reactions were proposed as the most likely responsible for pore development during activation.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Agricultural Engineering
Shivam Rawat, T. Boobalan, M. Sathish, Srinivas Hotha, Bhaskar Thallada
Summary: Biochar prepared from litchi seeds was used to fabricate supercapacitor electrodes. The activated biochar showed a specific capacitance of 493 F g-1, significantly higher than the initial capacitance of 190 F g-1. The activated biochar supercapacitor exhibited excellent cyclic stability with capacitance retention above 90% after 10,000 charge-discharge cycles.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Physical
Xiangxia Jing, Lei Wang, Konggang Qu, Rui Li, Wenjun Kang, Haibo Li, Shenglin Xiong
Summary: Developing monolithic electrodes with high capacitor performance using chemically activated commercial melamine sponges and KOH is a challenge in the energy storage field. The study demonstrates that adjusting the KOH/melamine sponge mass ratio can regulate the graphitization degree, heteroatom content, and pore size distribution of the monolithic N-/O-doped carbon sponge electrodes. The optimized electrode shows promising specific capacitances and retention rates, and the charge storage mechanism in NOCSs is systematically studied to separate different capacitance contributions. Additionally, the NOCSs show good capacitance performances in all-solid-state supercapacitors, providing high energy density and power output for driving LED devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Suhas, V. K. Gupta, L. P. Singh, Monika Chaudhary, Sarita Kushwaha
Summary: An eco-friendly and innovative approach was used to develop activated carbon from hydrothermally treated material from Phyllanthus emblica fruit stone. Comparisons were made between activated carbons developed from hydrothermally treated and untreated Phyllanthus emblica fruit stone, showing that hydrothermal treatment resulted in activated carbon with higher surface area and pore volume. This study introduces a new prospect for the development of better porous material through economical hydrothermal treatment.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
Amir Shahin Shamsabadi, Mehdi Bazarganipour, Hossein Tavanai
Summary: This study focuses on activating dates stone by microwave irradiation with various catalysts, analyzing the pore characteristics and FTIR, XRD, and Raman analysis of the microwave activated samples. The ACNs exhibit a unique coral shape porous structure with a high specific surface area. The study also highlights the impact of different catalysts on the integrity and pore characteristics of the activated carbon nanostructures.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Applied
Enrique Garcia-Diez, Alberto Castro-Muniz, Juan Ignacio Paredes, M. Mercedes Maroto-Valer, Fabian Suarez-Garcia, Susana Garcia
Summary: Activated ordered mesoporous carbon (AOMC) sorbents have been synthesized, characterized, and evaluated for CO2 capture. Both physical and chemical activation processes were applied, with the best chemical activated AOMC achieved at 850℃ with a KOH: carbon ratio of 4:1, and the best physical activated AOMC obtained after 48 hours with a burn-off degree of 48%. The ordered mesoporous structure was found to facilitate CO2 diffusion into the micropores of the porous carbons, with performance remaining constant over multiple adsorption-desorption cycles.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Agricultural Engineering
Lingyan Zhu, Qifan Wang, Haotian Wang, Fei Zhao, Dongbing Li
Summary: In this study, high-performance activated carbons were prepared from Acer truncatum seed shells. The one-step activation at 800 degrees C showed the best results, yielding activated carbon with a large surface area and total pore volume, as well as high specific capacitance and excellent cycle stability. The simple and effective one-step activation opens up a new avenue for the production of high-performance supercapacitor electrode materials from low-cost plant residues.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Applied
Lok Kumar Shrestha, Rekha Goswami Shrestha, Sabina Shahi, Chhabi Lal Gnawali, Mandira Pradhananga Adhikari, Biswa Nath Bhadra, Katsuhiko Ariga
Summary: Nanoarchitectonics combines nanotechnology with various scientific disciplines to create new functional materials. This paper explores the progress and potential of biomass nanoarchitectonics in supercapacitor applications as examples of energetic materials and devices. The strategic design of nanoporous carbons from agricultural waste or natural biomass is of great significance in energy-related applications.
JOURNAL OF OLEO SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jianping Chen, Bin Liu, Hang Cai, Shude Liu, Yusuke Yamauchi, Seong Chan Jun
Summary: This study develops a covalently interlayer-confined organic-inorganic hybrid for improving the reaction kinetics of supercapacitors. The covalent assembly facilitates cross-layer electron transfer, increases active sites, and enhances the specific capacitance and rate capability of the hybrid material.
Review
Chemistry, Physical
Lijin Huang, Juan Yang, Yingji Zhao, Hirokatsu Miyata, Minsu Han, Qin Shuai, Yusuke Yamauchi
Summary: To address the insolubility and poor processability of powder covalent organic frameworks (COFs), monolithic COFs with hierarchical structures have been constructed as a feasible and effective solution. This review provides a comprehensive summary of the recent advances in the synthesis of monolithic COF materials and their application in environmental remediation, as well as discussing current challenges and future perspectives.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaohong Liu, Xingtao Xu, Xiaoxu Xuan, Wei Xia, Guilin Feng, Shuaihua Zhang, Zhen-Guo Wu, Benhe Zhong, Xiaodong Guo, Keyu Xie, Yusuke Yamauchi
Summary: In this study, a yolk-shell nanoarchitecture of NASICON-structured NTP/C materials (ys-NTP@C) was developed using a metal-organic framework@ covalent organic polymer (MOF@COP) as a sacrificial template and space-confined nanoreactor. ys-NTP@C exhibited good CDI performance with high salt adsorption capacities (SACs) and good cycling stability. This study provides a new synthetic paradigm for preparing yolk-shell structured materials and highlights the potential use of yolk-shell nanoarchitectures for electrochemical desalination.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Chemical
Zeqiu Chen, Xingtao Xu, Kai Wang, Dong Jiang, Fanyue Meng, Ting Lu, Yusuke Yamauchi, Likun Pan
Summary: In this study, a hybrid material of pyrazine-based pi-conjugated organic molecule, hexaazatrinaphthalene (HATN), and MXene was reported. The combination of MXene as a conductive substrate and HATN as an electroactive material resulted in a unique 3D structure with increased ion transport channels, leading to enhanced charge transfer and ion diffusion rates. The obtained HATN/MXene composite exhibited a high desalination capacity of 57.5 mg g(-1), a fast desalination rate of 13.2 mg g(-1) min(-1), and good long-term stability. This work provides valuable insights for the design and application of organic molecules in the field of capacitive deionization.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Editorial Material
Nanoscience & Nanotechnology
Katsuhiko Ariga
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Review
Nanoscience & Nanotechnology
Katsuhiko Ariga
Summary: The development of nanotechnology has provided the opportunity to integrate various phenomena and disciplines into materials at the atomic, molecular, and nanoscale levels. Nanoarchitectonics, specifically molecular nanoarchitectonics, is a methodology that utilizes atoms, molecules, and nanomaterials to develop functional material systems. Recent advancements in the incorporation of nanotechnological methods into organic synthesis have led to the observation of organic synthesis processes at the molecular level and the control of organic syntheses using probe microscope tips, which serve as starting points for nanoarchitectonics. This review introduces examples of molecular nanoarchitectonics and discusses future prospects, emphasizing the fusion of basic science and the application of practical functional materials in completing materials chemistry.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mandeep K. Chahal, Masato Sumita, Jan Labuta, Daniel T. Payne, Jonathan P. Hill, Yusuke Yamauchi, Takashi Nakanishi, Takeshi Tanaka, Hiromichi Kataura, Kenji Koga, Hiroyuki Miyamura, Yoshihiro Kon, Dachao Hong, Shinsuke Ishihara
Summary: This study reports a chemiresistive sensor array composed of modified hydroxylamine salts and single-walled carbon nanotubes that can selectively detect formaldehyde vapor. By screening different types of salts, an ideal sensor array has been identified that can clearly discriminate trace amounts of formaldehyde from acetaldehyde. This system offers portable and reliable chemical sensors for advanced environmental monitoring and healthcare applications.
Review
Chemistry, Multidisciplinary
Miharu Eguchi, Minsu Han, Yusuke Asakura, Jonathan P. Hill, Joel Henzie, Katsuhiko Ariga, Alan E. Rowan, Watcharop Chaikittisilp, Yusuke Yamauchi
Summary: Reactions at surfaces and interfaces require well-designed structures. Nano-architecting of available space is necessary to combine bulk material and void spaces. The materials space-tectonics methodology has been proposed to overcome limitations, develop functional structures, and integrate with emerging technologies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Katsuhiko Ariga
Summary: The concept of nanoarchitectonics combines nanotechnology with other material-related fields to create functional materials based on nanoscience. The ultimate goal is to construct high-performance materials using nanounits of atoms, molecules, and nanomaterials. This paper focuses on materials nanoarchitectonics for two-dimensional films, discussing the Langmuir-Blodgett (LB) method and layer-by-layer (LbL) assembly, as well as other advanced techniques for materials creation.
CHEMISTRY OF MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Katsuhiko Ariga
Summary: Nanoarchitectonics based on liquid-liquid interface is a new concept aiming to create bio-like functional structures with efficient self-organized and hierarchical structures. This review discusses recent research examples of liquid-liquid interfacial nanoarchitectonics, categorized by component materials, highlighting its significance in the future development of materials.
Article
Multidisciplinary Sciences
Magdiel Inggrid Setyawati, Qin Wang, Nengyi Ni, Jie Kai Tee, Katsuhiko Ariga, Pu Chun Ke, Han Kiat Ho, Yucai Wang, David Tai Leong
Summary: Traditional nanomedicine relies on tumor induced EPR effect for drug delivery. Here the authors show that gold nanoparticles are independently able to induce leakiness at tumor vasculature to enhance the tumor killing effect.
NATURE COMMUNICATIONS
(2023)
Review
Materials Science, Multidisciplinary
Linawati Sutrisno, Katsuhiko Ariga
Summary: Nanoarchitectonics is a postnanotechnology concept that integrates nanotechnology with other fields, elevating it to material science. This review focuses on pore-engineered nanoarchitectonics in cancer therapy, discussing the basics, application targets, and clinical translation of mesoporous materials.
NPG ASIA MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hirokazu Komatsu, Nadiia Velychkivska, Anastasiia B. Shatan, Yutaka Shindo, Kotaro Oka, Katsuhiko Ariga, Jonathan P. Hill, Jan Labuta
Summary: Nicotine adenine dinucleotide derivatives NADH and NADPH are involved in energy and electron transport in cells. The fluorescent ubiquinone-rhodol probe Q-Rh is used to monitor NADPH activation, and the addition of an Ir-III-complex promotes the activation. Experiments show that the reduction rate of Q-Rh is increased in HeLa cells especially with the addition of the Ir-III-complex promoter, involving the nonspecific activation of other intracellular reducing agents.
Article
Biochemistry & Molecular Biology
Binita Maharjan, Lok Kumar Shrestha, Jonathan P. Hill, Katsuhiko Ariga, Shyam Sharan Shrestha, Stefania Sut, Ram Lal Swagat Shrestha, Stefano Dall'Acqua
Summary: The genus Corydalis is a valuable source of isoquinoline alkaloids with potential bioactivities. Extracts from Corydalis chaerophylla collected from Nepal showed significant antimicrobial and antioxidant activities. The methanol and chloroform extracts exhibited the highest inhibitory effects and antioxidant activity, while the methanol extract showed the highest potential for alpha-amylase inhibition. The chloroform extract demonstrated the most promising activity and will be utilized in future isolation procedures and pharmacological tests.
CHEMISTRY & BIODIVERSITY
(2023)
