检索结果-内蒙古大学图书馆

Sustainable optimization of acetone-water distillation: Balancing cost, flexibility, and environmental impact with heat pump integration

引用

Chemical engineering Research and Design 2025年 218卷 361-375页

作者： Wu, Ssu-Hsien Lin, Chih-Yao Silviana, S. Adi, Vincentius Surya Kurnia Department of Chemical Engineering College of Engineering National Chung Hsing University Taichung40227 Taiwan Department of Chemical and Materials Engineering College of Engineering Tunghai University Taichung407224 Taiwan Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Tembalang Semarang50275 Indonesia Master Program of Energy School of Postgraduate Studies Universitas Diponegoro Pleburan Semarang50241 Indonesia

Acetone is extensively used in industrial applications due to its high polarity and miscibility. However, its separation from water becomes increasingly energy-intensive at high concentrations beyond a mass fraction of 0.8, where the relative volatility significantly decreases. This study introduces an innovative heat pump-assisted distillation system (HPADS) coupled with a novel bi-objective optimization framework that simultaneously considers economic efficiency and operational flexibility—an aspect often neglected in prior studies. Leveraging the integration of Aspen Plus® and MATLAB®, the proposed system enables automated, parallelized optimization using a genetic algorithm (GA), with a custom objective function that includes both total annual cost (TAC) and a flexibility index (FI). This approach ensures not only minimum cost but also robust performance under feed disturbances. The optimized HPADS achieves up to 16.25 % flexibility in feed variation tolerance, reduces operating costs by 57.78 %, and cuts annual CO₂ emissions by 3.83 × 10⁶ kg compared to conventional systems. The results demonstrate that embedding flexibility into process design enhances both sustainability and resilience, positioning the proposed HPADS framework as a significant advancement toward practical, energy-efficient, and disturbance-tolerant distillation systems. © 2025 Institution of Chemical Engineers

关键词： Distillation

来源：评论

学校读者我要写书评

暂无评论

Synergetic effects of multiple junction and surface hydroxyl in Cu/CuO/Cu2O/TiO2 heterostructures towards highly efficient photocatalysts for hydrogen generation

引用

materials Science for Energy Technologies 2025年 8卷 131-142页

作者： Subagyo, Riki Anindika, Garcelina Rizky Aufkani, Afif Akmal Zhang, Lei Ardhyananta, Hosta Burhan, R.Y. Perry Nugraheni, Zjahra Vianita Akhlus, Syafsir Bahruji, Hasliza Prasetyoko, Didik Wellia, Diana Vanda Ivansyah, Atthar Luqman Arramel Kusumawati, Yuly Department of Chemistry Faculty of Science and Analytic Data Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia Center of Excellence Applied Physics and Chemistry Nano Center Indonesia Jl PUSPIPTEK South Tangerang Banten15314 Indonesia Department of Physics National University of Singapore Singapore117551 Singapore Department of Materials and Metallurgical Engineering Faculty of Industrial Technology and Systems Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia Centre of Advanced Material and Energy Science Universiti Brunei Darussalam Jalan Tungku Link BE 1410 Brunei Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Andalas Padang25163 Indonesia Master Program in Computational Science Faculty of Mathematics and Natural Science Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung40132 Indonesia Instrumentation and Computational Physics Research Group Department of Physics Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No.10 West Java Bandung40132 Indonesia

The implementation of titanium dioxide (TiO2) as a photocatalyst material in hydrogen (H2) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide band gap of a photo-sensitive material of TiO2 are detrimental toward the targeted catalytical reaction. In this study, we present the rational design, fabrication, photocatalytic performance of TiO2-Cu/CuO/Cu2O heterostructures (CuTi) using viable chemical reduction method. The Z-scheme and S-scheme are succesfully generated across the TiO2/CuO/Cu2O interfaces, while the Schottky junction arises on the Cu perimeters. This is evidenced from the blue shifted about 0.3 eV of Cu 2p core level determined by using X-ray photoemission spectroscopy (XPS), in combination with the formation of inverse V-shape of the Mott-Schottky plots. In addition, we find that Cu/CuO/Cu2O facilitates photon absorption range up to the visible region. The multiple heterojunction and the large number of OHsurface enhanced charge carrier transfer are associated to the suppression of photoluminescence (PL) intensity, high surface hydroxyl (OHsurface) density in CuTi probed by XPS, and fast electron transfer based on the electrochemical measurements. The presence of OHsurface inhibits the recombination of electron. A significant H2 photogeneration rate enhancement is achieved when an optimized 5 wt% Cu/CuO/Cu2O concentration is used on TiO2 to achieve 7,157.19 μmol·g−1 (1,789.30 μmol·g−1·h−1). Based on this finding, zero emission energy innitiative could be materialized under multiple heterojunctions in photocatalytic process is beneficial for enhancing the H2 production. © 2025 The Authors

关键词： Titanium dioxide

来源：评论

学校读者我要写书评

暂无评论

Optimizing dispersion of torrefied spent coffee grounds for enhanced biochar-EVA composite properties through sodium percarbonate-assisted treatment

引用

Journal of Industrial and engineering Chemistry 2025年

作者： Lee, Kuan-Ting Gabriela, Situmorang Chen, Wei-Hsin Rajendran, Saravanan Selvarajoo, Anurita Department of Chemical and Materials Engineering Tunghai University Taichung407 Taiwan International Master Degree Program on Energy Engineering National Cheng Kung University Tainan701 Taiwan Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Mechanical Engineering National Chin-Yi University of Technology Taichung411 Taiwan Instituto de Alta Investigación Universidad de Tarapacá Arica1000000 Chile Department of Civil Engineering Faculty of Science and Engineering University of Nottingham Malaysia

This study aims to optimize biochar by combining 10 % sodium percarbonate with 90 % spent coffee grounds and torrefying at 300 °C for 30 min. Biochar enhances black color dispersion in a composite when blending the optimal biochar and ethylene vinyl acetate. The maximum carbon content of the optimal biochar is 59.97 %, exhibiting similar dispersion, packing density, pore size, and contact angle to carbon black. The optimal biochar's specific surface area and total pore volume are 7.12 m2·g−1 and 0.0018 cm3·g−1, respectively, 2.9 times and 1.2 times that of untreated torrefied spent coffee grounds with SP treated. The mechanical properties of the composite, which is blended with 15 wt% of the optimal biochar to ethylene vinyl acetate through trade-off analysis, indicate a tensile strength and Young's modulus of 1.03 MPa and 9.69 MPa, respectively. As the amount of blended optimal biochar increases, the tensile strength decreases while Young's modulus increases. Compared with a composite blended with the same 15 wt% of carbon black, the tensile strength and Young's modulus are 0.77 MPa and 9.55 MPa, respectively. In conclusion, the optimal biochar is a potential alternative material that could replace carbon black. This finding aligns with the developmental direction of achieving negative carbon emissions, promoting a circular economy and valorizing waste. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Tensile strength

来源：评论

学校读者我要写书评

暂无评论

Natural Alkaloids (Caffeine, Theobromine and Theophylline) as Dielectric Capping Layers for Gold and Aluminum Gate Electrodes in Low Operating Voltage Organic Field-Effect Transistors

IEEE Journal on Flexible Electronics

引用

IEEE Journal on Flexible Electronics 2025年

作者： Irimia, Cristian Vlad Yumusak, Cigdem Ban, Boyuan Leeb, Elisabeth Mayr, Felix Schimanofsky, Corina Mardare, Andrei Ionut Molnar, Maximilian Alexander Teichert, Christian Sariciftci, Niyazi Serdar Irimia-Vladu, Mihai Institute of Physical Chemistry Altenberger Str. 69 Linz4040 Austria Graz University of Technology in Graz Master of Science student in Advanced Materials Science program Austria Montanuniversität Leoben Chair of Physics Department of Physics Mechanics and Electrical Engineering Franz Josef Str. 18 Leoben8700 Austria Key Lab of Photovoltaic and Energy Conservation Materials Institute of Solid-State Physics Hefei Institute of Physical Science Hefei230031 China Altenberger Str. 69 Linz4040 Austria National Institute for Lasers Plasma and Radiation Physics Magurele077125 Romania

Three natural alkaloids: caffeine, theobromine and theophylline are reported for their application as dielectric layers in organic field effect transistors (OFETs) utilizing both gold and aluminum gate electrodes. After careful purification of the materials, a detailed analysis using x-ray diffraction spectroscopy (XRD), Fourier transform infrared spectroscopy (FTIR), contact angle (CA), impedance spectroscopy, amplitude modulated kelvin probe force microscope (AM-KPFM) and cyclic voltammetry (CV) is performed. OFET devices operating at typical voltages between 2 and 4 V have been fabricated with the investigated alkaloid films processed via blade coating (caffeine) or vacuum processing (theobromine and theophylline). The dielectric properties of these three alkaloids are measured in impedance spectroscopy and negligible leakage currents are observed when deposited in thin films as dielectric layers in OFETs on aluminum electrodes. There is a high tendency of these molecules to crystallize and form uneven surfaces. When the thin film forming properties are carefully controlled, organic alkaloids can be employed in applications involving implantable, transient or even edible electronics. © 2022 IEEE.

关键词： Fourier transform infrared spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Changes in fluoride removal ability of chicken bone char with changes in calcination time

International Journal of Ceramic Engineering and Science

引用

International Journal of Ceramic engineering and Science 2020年第2期2卷 83-91页

作者： Kikuchi, Masanori Arioka, Yuki Tafu, Masamoto Irie, Mitsuteru Bioceramics Group National Institute for Materials Science Tsukuba Japan Master's Program in Life Science Innovation University of Tsukuba Tsukuba Japan Department of Applied Chemistry and Chemical Engineering Toyama College National Institute of Technology Toyama Japan Faculty of Engineering University of Miyazaki Miyazaki Japan

Changes in fluoride removal ability of chicken bone char (CBC) were investigated by both remained amounts of carbon including organic substances and crystallite size of hydroxyapatite in the CBC. Carbon contents in CBC were controlled by heating time at 600°C. Although temperature for crystal-grain growth for HAp, 650°C, was higher than 600°C, crystallite size of HAp in CBC increased with heating time. Fluoride ion removal ability positively related to the amount of remaining carbon and negatively related to the square of crystallite size, as an index of surface area, of HAp. These results suggested that fluoride ion removal from water by CBC is not only by ion exchange and/or dissolution-precipitation process, but also by adsorption by carbon and/or temporal capture of fluoride ion by microstructure of carbonate in CBC before immobilize it in apatite structure. © 2019 The Authors. International Journal of Ceramic engineering & Science published by Wiley Periodicals, Inc. on behalf of American Ceramic Society.

关键词： Crystallite size

来源：评论

学校读者我要写书评

暂无评论

Study on the Increase of Comfort in Ten Fashion Summer Tops Made of Four Kinds of Textiles

引用

Research Journal of Textile and Apparel 2014年第2期18卷 56-64页

作者： Chang, Yi-Ching Lee, Kuei-Chi Miao, Mei-Fen Yu, Huei-Jen Department of Fashion Design Shih Chien University Taiwan Department of Textile Engineering Chinese Culture University Taiwan Department of Textile Engineering Chinese Culture University China Department of Chemical and Materials Engineering and Master Program of Nanomaterials Chinese Culture University China

In response to the increasing demands for energy saving and carbon reduction under current global trends, we apply 10 fashion summer tops from Paris and New York made of cotton and CVC fabrics, fabric that has moisture transferring and sweat expulsion abilities, and fabric with moisture transferring and sweat expulsion properties that also imparts a cooling sensation in this study. Furthermore, by analyzing the activity of sympathetic and parasympathetic nerves which are measured by a heartbeat variability analyzer, we have obtained the relative comfort results in both the dynamic and static modes while the tested subject is wearing garments made from the 4 types of fabrics. We have tried to bring out the relationship between summer fashion style, fabric type and comfort. The test results indicate that the fabric with moisture transferring and sweat expulsion abilities can greatly increase the comfort of the garment and the comfort will be further increased if the fabric adds nano mineral-powder that imparts a cooling sensation for further moisture transferring and sweat expulsion. Finally, less coverage and stress on the top part (neck, shoulders and upper back) of the human body can reduce induced pressure and increase the relative comfort. © 2014 Emerald Group Publishing Limited.

关键词： Comfort Cooling Sensation Moisture Transfer Sympathetic Nerves

来源：评论

学校读者我要写书评

暂无评论

Enhanced SERS Detection Using TiO₂ Photonic Crystals with In-Situ-Grown Au/Ag Nanoparticles

引用

ACS Applied Nano materials 2025年

作者： Wang, Zeyu Wu, Jake Li, Xiangming Chen, Xiaoliang He, Chunjie Shao, Jinyou Louh, Rong-Fuh Frontier Institute of Science and Technology and Micro- and Nanotechnology Research Center State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Shaanxi Xi’an 710049 China Master’s Program of Biomedical Informatics and Biomedical Engineering Feng Chia University Taichung 407 Taiwan Micro-and Nanotechnology Research Center State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Shaanxi Xi’an 710049 China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education International Center for Dielectric Research Shannxi Engineering Research Center of Advanced Energy Materials and Devices Xi’an Jiaotong University Shaanxi Xi’an 710049 China

Surface-enhanced Raman spectroscopy (SERS) has been widely utilized for the detection of disease biomarkers, pesticides, and environmental pollutants due to its exceptional sensitivity, real-time responsiveness, and unique interactions between adsorbates and substrates. Here, we present a composite metal/semiconductor material comprising TiO₂ nanosphere substrates integrated with in-situ-grown Au or Ag nanoparticles (NMNPs@TiO₂). These composite nanospheres are assembled by an electrophoretic self-assembly process to form a photonic crystal structure with three-dimensionally ordered periodic geometric features and show remarkable sensitivity and stability for SERS detection, achieving a detection limit as low as 10^-9 M for Rhodamine 6G. Beyond merely enhancing SERS signals by generating uniformly distributed metal plasmonic “hot spots” on TiO₂ substrates, similar to traditional semiconductor substrates, this photonic crystal substrate also exhibits advanced light absorption and localization capabilities. The absorbed light drives the defect excitation of TiO₂, facilitated by its multicrystalline structure. Excited electrons from the TiO₂ nanospheres contribute to the enhancement of localized surface plasmon resonance through charge transfer to noble-metal nanoparticles. Additionally, the synthesis of NMNPs@TiO₂ nanospheres avoids the use of toxic reagents, and substrate assembly is achieved through a simple electrodeposition process. This approach simplifies fabrication while enabling the production of SERS detectors with exceptional spatial and temporal signal stability. With increasing demands for higher detection sensitivity, signal uniformity, and detector durability for SERS detection applications, the NMNPs@TiO₂ nanosphere-based photonic crystal substrate underscores its potential to significantly improve the SERS detection efficiency, making it ideal for ultrasensitive che

关键词： electric deposition photonic crystal semiconductor SERS synthesis

来源：评论

学校读者我要写书评

暂无评论

Enhanced cycling stability of SiO,/Si/nickel foam thin film anodes for lithium ion batteries 233

Enhanced cycling stability of SiO,/Si/nickel foam thin film ...

引用

233rd Meeting of the Electrochemical Society

作者： Chili, K.-F. Leub, H.-J. Li, K.-C. Department of Materials Science and Engineering Feng Chia University 100 Wen Hwa Road Taichung407 Taiwan Master's Program of Green Energy Science and Technology Feng Chia University Taichung407 Taiwan

ISBN: (纸本)9781510866171

Silicon has been known as the next generation anode material for lithium-ion batteries (LIBs) due to its high theoretical specific capacity (4200 mA h g'1). However silicon anodes face the challenge of large volume change over 400 % during lithiation/delithiation cycles, leading to the pulverization of the silicon based electrodes. In this study, radio frequency (RF) magnetron sputtering is used to deposit amorphous silicon thin films on nickel foam current collectors. This flexible three-dimensional structure is found to relieve stress caused by the volume expansion. Furthermore, SiO, is coated on the previously fabricated silicon anodes as a buffer layer. The oxygen contents and the thickness of the SiO, are controlled by depositing under different Ar/02 ratios, and depositing times. The electrochemical behaviors of the SiO,/Si/nickel foam electrodes toward lithium are studied. It is found that the SiO,/Si/nickel foam electrodes with optimized oxygen contents and thickness of SiO, films exhibit high cycling stability and coulombic efficiency. The results are attributed to the stress relaxation effect provided by the flexible nickel foams and the SiO, buffer layers. © 2018 Electrochemical Society Inc. All Rights Reserved.

关键词： Silicon oxides

来源：评论

学校读者我要写书评

暂无评论

Decentralized Learning with Virtual Patients for Medical Diagnosis of Diabetes

引用

SN Computer Science 2021年第4期2卷 239页

作者： Takahashi, Yuta Chang, Han-ten Nakai, Akie Kagawa, Rina Ando, Hiroyasu Imakura, Akira Okada, Yukihiko Tsurushima, Hideo Suzuki, Kenji Sakurai, Tetsuya Faculty of Engineering Information and Systems University of Tsukuba Tsukuba Japan Center for Artificial Intelligence Research University of Tsukuba Tsukuba Japan Master’s Program in Service Engineering University of Tsukuba Tsukuba Japan Faculty of Medicine University of Tsukuba Tsukuba Japan Advanced Institute for Materials Research Tohoku University Sendai Japan

Machine learning, applied to medical data, can uncover new knowledge and support medical practices. However, analyzing medical data by machine learning methods presents a trade-off between accuracy and privacy. To overcome the trade-off, we apply the data collaboration analysis method to medical data. This method using artificial dummy data enables analysis to compare distributed information without using the original data. The purpose of our experiment is to identify patients diagnosed with diabetes mellitus (DM), using 29,802 instances of real data obtained from the University of Tsukuba Hospital between 01/03/2013 and 30/09/2018. The whole data is divided into a number of datasets to simulate different hospitals. We propose the following improvements for the data collaboration analysis. (1) Making the dummy data which has a reality and (2) using non-linear reconverting functions into the comparable space. Both can be realized using the generative adversarial network (GAN) and Node2Vec, respectively. The improvement effects of dummy data with GAN scores more than 10% over the effects of dummy data with random numbers. Furthermore, the improvement effect of the re-conversion by Node2Vec with GAN anchor data scores about 20% higher than the linear method with random dummy data. Our results reveal that the data collaboration method with appropriate modifications, depending on data type, improves analysis performance. © 2021, The Author(s).

关键词： Data collaboration Generative adversarial network Machine learning Medical data

来源：评论

学校读者我要写书评

暂无评论

Electroplating of ZnO Influenced by the Concentration of Aluminum Nitrate in the Bath

Electroplating of ZnO Influenced by the Concentration of Alu...

引用

2016 International Conference on materials Science and Nanotechnology

作者： Jing-Chie Lin Amrita Choudhury Yao-Tien Tsneg Kun-Cheng Peng Institute of Materials Science and Engineering “Central University” International Master Degree Program in Applied Materials Science “Central University” Department of Materials Science and Engineering Mingchi University of Technology

Electrochemical deposition of Al-doped ZnO（AZO） on the ITO glass was investigated in baths containing various concentrations of aluminum nitrate. The electrochemical and chemical reactions can be deduced by means of investigating cathodic polarization curves and time/electroplating-current curves for further characterizing structures of ZnO and AZO, and establishing growth mechanism. High-quality AZO nanorods, depositing on ITO substrate that coated with ZnO seed-layer, were utilized the electrochemical method at-1.0 V（against a reference electrode of Ag/AgC l in 3.0 M KCl） in the bath of 90 °C. After annealing at 350 °C, ZnO and AZO nanorods were analyzed by field-emission scanning electron microscope（FESEM） to explore the morphology of nanostructure. The SEM image displayed that the lower Al concentrations（20 ~ 60 μM） in the bath, the average diameter of nanorods decreased;while the Al concentrations excessed over 60 μM, the morphology of the AZO nanorods turned into partial-area nanosheets instead of the nanorods spread. The crystal structure of the AZO nanorods were identified by using grazing-incident X-ray diffraction（GIXRD）. The patterns of the Al ions in the range of 20 ~ 60 μM in the bath showed that the preferred orientations were along with the [002] direction which confirmed the result of AZO nanorods well aligned in c-axis orientation, and the characterized peak（002） slightly shifted to the right suggested that Al atoms had doped into the ZnO lattice. We also adopted the X-ray photoelectron spectroscopy to characterize the elemental and chemical compositions of the AZO nanorods. XPS spectrums confirmed that the Al atoms successfully doped. Finally, for identifying the optimal boundary condition of Al content in ZnO, the nanorods with various Al concentrations were utilized via dye-sensitized solar cells（DSSC） experiment with the standard solar Simulators（AM1.5 G） and J-V Measurement. We found that the AZO nanorods as the photoanode contained 2.84 at.% A

关键词： Al-doped ZnO electrochemical deposition Dye-Sensitized Solar Cells aluminum concentration X-ray photoelectron spectroscopy

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：