检索结果-内蒙古大学图书馆

N, O-doped carbon foam as metal-free electrocatalyst for efficient hydrogen production from seawater

Nano Research 2022年第10期15卷 8922-8927页

作者： Qian Liu Shengjun Sun Longcheng Zhang Yongsong Luo Qin Yang Kai Dong Xiaodong Fang Dongdong Zheng Abdulmohsen Ali Alshehri Xuping Sun Institute for Advanced Study Chengdu UniversityChengdu 610106China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China

Seawater electrolysis is the most promising technology for large scale hydrogen production due to the abundance and low cost of seawater in ***,compared with the traditional freshwater electrolysis,the issues of electrode poisoning and corrosion will occur during the seawater electrolysis process,and active and stable electrocatalysts for the hydrogen evolution reaction(HER)are thus highly *** this work,N,O-doped carbon foam in-situ derived from commercial melamine foam is proposed as a high-active metal-free HER electrocatalyst for seawater *** acidic seawater,our catalyst shows high hydrogen generation performance with small overpotential of 161 mV at 10 mA·cm^(−2),a low Tafel slop of 97.5 mV·dec^(−1),and outstanding stability.

关键词： carbon foam hydrogen evolution reaction seawater electrolysis electrocatalyst

来源：评论

学校读者我要写书评

暂无评论

IoT System for Floating Raft Hydroponics: Nutrient Monitoring and Automation 13

IoT System for Floating Raft Hydroponics: Nutrient Monitorin...

引用

13th International Physics Seminar 2024, IPS 2024

作者： Purwalaksana, A.Z. Wahyu, S. Ndari, W.E.W. Syah, S.A. Rismawati, E. Kusumadjati, A. Suharmanto, P. Department of Physics Universitas Negeri Jakarta Jl. Rawamangun Muka Jakarta13220 Indonesia Department of Physics Education Universitas Negeri Jakarta Jl. Rawamangun Muka Jakarta13220 Indonesia Physics Study Program Indonesia Defense University IPSC Sentul Area West Java16810 Indonesia Department of Industrial Engineering Faculty of Engineering and Computer Science Universitas Indraprasta PGRI Jl. Nangka Raya No.58 C Jakarta12530 Indonesia

The utilization of hydroponic cultivation in agriculture is increasing due to its high productivity even in limited spaces. However, in practice, monitoring and controlling nutrients in hydroponic systems often require intensive human supervision and intervention. This issue can be addressed through technological advancements, particularly with the adoption of microcontrollers, sensors, and the Internet of Things (IoT). Previous research has developed IoT-based monitoring and control systems for DFT hydroponics using the Blynk platform. This study aims to develop an IoT-based nutrient monitoring and automation system for floating raft hydroponics. Floating raft hydroponics was chosen for its simplicity, lower installation costs, and space optimization. The system developed in this study uses the HC-SR04 ultrasonic sensor with an average error of 1.229%, the DS18B20 water temperature sensor with an error of 0.415%, and the TDS sensor with an error of 2.055%. The sensor and actuator measurement data are presented via the Antares Web. This research has the potential to minimize the necessity for manual intervention in hydroponic systems, thereby enhancing both efficiency and consistency in nutrient delivery. © Published under licence by IOP Publishing Ltd.

关键词： Hydroponics

来源：评论

学校读者我要写书评

暂无评论

A critical review of the integration of renewable energy sources with various technologies

引用

Protection and Control of Modern Power Systems 2021年第1期6卷 37-54页

作者： Erdiwansyah Mahidin H.Husin Nasaruddin M.Zaki Muhibbuddin Doctoral Program School of EngineeringUniversitas Syiah KualaBanda Aceh23111Indonesia Faculty of Engineering Universitas Serambi MekkahBanda Aceh23245Indonesia Department of Chemical Engineering Universitas Syiah KualaBanda Aceh23111Indonesia Department of Electrical and Computer Engineering Universitas Syiah KualaBanda Aceh23111Indonesia Department of Mechanical and Industrial Engineering Universitas Syiah KualaBanda Aceh23111Indonesia

Wind power, solar power and water power are technologies that can be used as the main sources of renewable energy so that the target of decarbonisation in the energy sector can be achieved. However, when compared with conventional power plants, they have a significant difference. The share of renewable energy has made a difference and posed various challenges, especially in the power generation system. The reliability of the power system can achieve the decarbonization target but this objective often collides with several challenges and failures, such that they make achievement of the target very vulnerable, Even so, the challenges and technological solutions are still very rarely discussed in the literature. This study carried out specific investigations on various technological solutions and challenges, especially in the power system domain. The results of the review of the solution matrix and the interrelated technological challenges are the most important parts to be developed in the future. Developing a matrix with various renewable technology solutions can help solve RE challenges. The potential of the developed technological solutions is expected to be able to help and prioritize them especially cost-effective energy. In addition, technology solutions that are identified in groups can help reduce certain challenges. The categories developed in this study are used to assist in determining the specific needs and increasing transparency of the renewable energy integration process in the future.

关键词： Integration RE Energy source Technology system energy Power system Variable RE

来源：评论

学校读者我要写书评

暂无评论

Cigarette butt filter as membrane material with tannic acid and FeCl₃ additives for improve antifouling properties

Case Studies in Chemical and Environmental Engineering

引用

Case Studies in chemical and Environmental engineering 2025年 11卷

作者： Luthfiana, Anisa Mulyati, Sri Arahman, Nasrul Bilad, Muhammad Roil Aulia, Muhammad Prayogie Doctoral Program School of Engineering Science Universitas Syiah Kuala Banda Aceh Indonesia Department of Chemical Engineering Universitas Syiah Kuala Banda Aceh Indonesia Department of Chemical and Process Engineering Faculty of Integrated Technologies Universiti Brunei Darussalam Bandar Seri Begawan Brunei Darussalam Department of Chemical Science and Engineering Kobe University Kobe Japan

Membrane fouling remains a critical challenge in wastewater treatment, particularly in applications involving oil-water emulsions. This study addresses this issue by fabricating antifouling membranes from repurposed cigarette filter waste, modified with tannic acid and FeCl₃ (ferric chloride) coatings. These modifications enhance membrane hydrophilicity, antifouling properties, flux recovery, and selectivity through an environmentally friendly approach. The membranes were prepared using the non-solvent induced phase separation (NIPS) method and subsequently coated through vacuum filtration. Key performance metrics included pure water flux, oil emulsion selectivity, and antifouling properties. The antifouling mechanism was attributed to the hydrophilic and protective layers formed by the tannic acid and FeCl₃ modifications, which reduced fouling and improved flux recovery. Characterization revealed that the tannic acid and FeCl₃ modifications created a hydrophilic layer with uniform pore distribution, leading to an oil rejection rate of up to 97 % and an increased flux recovery ratio of 85 %, compared to 65 % in unmodified membranes. The results highlight the potential of waste-derived membranes as a sustainable alternative for industrial wastewater treatment, aligning with the principles of circular economy and green chemistry. Future work should explore long-term stability, surface charge effects, and optimization of additive concentrations to enhance performance and antifouling efficiency further. © 2025 The Authors

关键词： Antifouling membrane Cigarette filter waste FeCl3 Oil-water emulsion tannic acid

来源：评论

学校读者我要写书评

暂无评论

Production of bioinsecticide from durian peel waste and Dioscorea hispida tuber extract by ultrasonic-assisted extraction

引用

AIP Conference Proceedings 2024年第1期2710卷

作者： Hasna Nisrina Sumayyah Widya Rahmanisa Fitri Tania Surya Utami Rita Arbianti Bioprocess Engineering Study Program Department of Chemical Engineering Faculty of Engineering University of Indonesia Depok 16424 Indonesia

A new armyworm (Spodoptera frugiperda) is rapidly spreading and causing damage to corn crops in Indonesia, thus prompting the need to control the pest with an effective, yet environmentally friendly pest control method, such as bioinsecticide. Natural raw materials like durian peel waste and Dioscorea hispida tuber can be processed to produce a natural bioinsecticide. To discover the optimum processing condition for bioinsecticide production, research is conducted to find the effective solvent material and concentration in ultrasonic-assisted extraction methods. Durian peel waste is extracted using ethanol 30% and methanol 70% as solvents with the ratio variation of 1:0, 0:1, 1:1, 1:2, 2:1. Meanwhile, Dioscorea hispida tubers are extracted with various ethanol concentrations as solvents (ethanol 50%, 70%, 80%, absolute, and distilled water). The result shows that the most effective solvent for durian peel waste extraction is a 2:1 ratio of ethanol and methanol, with the optimum yield of 12.58%. The result also shows that Dioscorea hispida tuber is best extracted with distilled water, yielding 34.70%. The efficacy test concludes that the best solvent variation for pest elimination is a 0:1 ratio of ethanol and methanol durian peel waste and ethanol 80% for Dioscorea hispida tuber. The LC-MS/MS test results identified that alkaloid, flavonoid, and fatty acid compounds potentially caused larvae mortality.

关键词：

来源：评论

学校读者我要写书评

暂无评论

CoFe-LDH nanowire arrays on graphite felt: A high-performance oxygen evolution electrocatalyst in alkaline media

引用

Chinese chemical Letters 2022年第2期33卷 890-892页

作者： Biao Deng Jie Liang Luchao Yue Tingshuai Li Qian Liu Yang Liu Shuyan Gao Abdulmohsen Ali Alshehri Khalid Ahmed Alzahrani Yonglan Luo Xuping Sun Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institute for Advanced Study Chengdu UniversityChengdu 610106China School of Materials Science and Engineering Henan Normal UniversityXinxiang 453007China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Developing non-noble-metal oxygen evolution reaction(OER) electrocatalysts with high performance is critical to electrocatalytic water splitting. In this work, we fabricated Co Fe-layered double hydroxide(LDH) nanowire arrays on graphite felt(Co Fe-LDH/GF) via a hydrothermal method. The Co Fe-LDH/GF, as a robust integrated 3 D OER anode, exhibits excellent catalytic activity with the need of low overpotential of 252 and 285 mV to drive current densities of 10 and 100 mA/cm^(2) in 1.0 mol/L KOH, respectively. In addition, it also maintains electrochemical durability for at least 24 h. This work would open up avenues for the development of GF like attractive catalyst supports for oxygen evolution applications.

关键词： LDH Graphite felt Electrocatalyst Oxygen evolution Alkaline media

来源：评论

学校读者我要写书评

暂无评论

Effect of the number of Cyperus rotundus and medium height on the performance of batch-constructed wetland in treating aquaculture effluent

引用

Chemosphere 2024年 353卷 141595页

作者： Imron, Muhammad Fauzul Hestianingsi, Wa Ode Ayu Putranto, Trisnadi Widyaleksono Catur Citrasari, Nita Abdullah, Siti Rozaimah Sheikh Hasan, Hassimi Abu Kurniawan, Setyo Budi Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Campus C UNAIR Jalan Mulyorejo Surabaya60115 Indonesia Department of Water Management Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 CN Delft 2628 Netherlands Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Bangi Selangor 43600 Malaysia Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Bangi Selangor 43600 Malaysia Laboratory of Algal Biotechnology Centre Algatech Institute of Microbiology of the Czech Academy of Sciences Opatovický mlýn Novohradská 237 Třeboň379 81 Czech Republic

Increasing aquaculture cultivation produces large quantities of wastewater. If not handled properly, it can have negative impacts on the environment. Constructed wetlands (CWs) are one of the phytoremediation methods that can be applied to treat aquaculture effluent. This research was aimed at determining the performance of Cyperus rotundus in removing COD, BOD, TSS, turbidity, ammonia, nitrate, nitrite, and phosphate from the batch CW system. Treatment was carried out for 30 days with variations in the number of plants (10, 15, and 20) and variations in media height (10, 12, and 14 cm). The result showed that aquaculture effluent contains high levels of organic compounds and nutrients, and C. rotundus can grow and thrive in 100% of aquaculture effluent. Besides that, the use of C. rotundus in CWs with the effect of numbers of plants and media height showed performance of COD, BOD, TSS, turbidity, ammonia, nitrate, nitrite, and phosphate with 70, 79, 90, 96, 64, 82, 92, and 48% of removal efficacy, respectively. There was no negative impact observed on C. rotundus growth after exposure to aquaculture effluent, as indicated by the increase in wet weight, dry weight, and growth rate when compared to the control. Thus, adding aquaculture effluent to CWs planted with C. rotundus supports the growth and development of plants while also performing phytoremediation. © 2024 Elsevier Ltd

关键词： Wetlands

来源：评论

学校读者我要写书评

暂无评论

Enhancing Indian Onion (Allium Cepa L. VAR. Aggregatum) Extraction by Microwave Hydrodiffusion – Gravity (Mhg) Methode: Parametric Studi and Optimization

SSRN

引用

SSRN 2024年

作者： Variyana, Yeni Fitria, Murni Muchammad, Raka Selaksa Charisma Mahfud, Mahfud Study Program of Industrial Chemical Engineering Politeknik Negeri Lampung Jl. Soekarno Hatta No.10 Bandar Lampung35144 Indonesia Jl. Rungkut Madya No.1 Surabaya60294 Indonesia Department of Chemical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia

The aim of this study is to obtain an essential oil from Allium cepa L. var. aggregatum by the extraction process using the microwave hydrodiffusion-gravity method. The operating parameters are drying pre-treatment, material size, microwave power, and extraction time. The optimal parameter conditions were determined by screening the data using a full factorial design and subsequently optimizing the process using a face-centered central composite design. The oil yield initially increases with the extraction period and then reaches a plateau, showing no further increase. The moisture content reduction resulting from drying methods has a direct impact on the production of essential oils, leading to increased yields. The results show that the highest yield achieved is 2.78 percent, which occurs for a duration of 75 minutes, a power level of 600 W, and a material size of 1 cm. In addition, the onion oil extract also contains cyclohexanol, 5-methyl-2-(1-methylethenyl) and Z-sitral. © 2024, The Authors. All rights reserved.

关键词： Microwave generation

来源：评论

学校读者我要写书评

暂无评论

Novel cubic heterojunction Fe2O3/ZnO composite for the photocatalyst application

Novel cubic heterojunction Fe2O3/ZnO composite for the photo...

引用

International Conference on Advanced Materials in Environment, Energy and Health Applications, AMEEHA 2022

作者： Hemnil, P. Prapawasit, Y. Karthikeyan, V. Wongwuttanasatian, T. Seithtanabutara, V. Energy Engineering Program Faculty of Engineering Khon Kaen University 40002 Thailand Mechanical Engineering Division Khon Kaen University Khon Kaen40002 Thailand Center for Alternative Energy Research and Development Khon Kaen University Thailand Department of Chemical Division Khon Kaen University Khon Kaen40002 Thailand

Dye Sensitize Solar Cell (DSSC) gained attention as a replacement for silicon solar cells owing to operational and economic benefits. This study aims to synthesize the Fe2O3/ZnO composites using two different methods;Hydrothermal-calcination (HTC) and Hydrothermal (HT) method. The prepared samples structural properties were analysed using XRD, SEM/EDX, BET, FTIR, and TGA. It was found that the HT-Fe2O3/ZnO composite had a lower crystalline peak with a higher specific area of 34.855m2/g than HTC-Fe2O3/ZnO composite as the formation of ZnO and Fe2O3 was well hybrid structure via atomic substitution mechanism. The particle characterization of HTC-Fe2O3/ZnO showed that Fe2O3 surrounding ZnO and had the composition of Fe, Zn and O of 16.71wt%, 62.90wt% and 20.39wt%, respectively. HT-Fe2O3/ZnO showed a cubic structure with higher content ot Fe (47.63wt%), lower content of Zn (34.89wt%) and O (17.48wt%). Both composites prepared from HT and HTC methods attained high absorbency in the ultra-violet and visible range, advantageously HT-Fe2O3/ZnO exhibits better absorbance in the visible light range, thus, resulting in a band gap energy is lower to 2.98eV. Therefore, HT-Fe2O3/ZnO material is recommended for DSSC to achieve higher performance. © 2022 Elsevier Ltd.

关键词： Zinc oxide

来源：评论

学校读者我要写书评

暂无评论

Development and Validation of Customer Intention Factors for Live-Stream Shopping 7

Development and Validation of Customer Intention Factors for...

引用

7th International Conference on New Media Studies, CONMEDIA 2023

作者： Fernando, Erick Hidayat, Desman Pengaribuan, Christian Haposan Prabowo, Yulius Denny Universitas Multimedia Nusantara Faculty of Engineering and Informatics Department of Information System Tangerang Indonesia Bina Nusantara University Binus Entrepreneurship Center Management Department Jakarta11480 Indonesia Sampoerna University Management Study Program Faculty of Business Jakarta12780 Indonesia Bina Nusantara University Binus Online Learning Computer Science Department Jakarta11480 Indonesia

ISBN: (纸本)9798350307504

Along with technological improvements, online shopping is currently developing quickly. Online shops started by selling electronics, clothing, food, and home appliances and continue to evolve, selling various things. Currently, digital marketing has a novel technique, namely live shopping, where sellers can present, promote and offer their products directly through live streaming on social media and e-commerce platforms. This research will focus on gaining insight into the factors influencing customers to watch and purchase through live streaming. This research is an early-stage study of exploring and searching for research models. The study used a literature review approach by reviewing similar previous research articles. Several variable components were used in this study. The findings of the factors include visibility capacity, meta-vocation capacity, purchase orientation capacity, social presence, price, perceived product quality, perceived enjoyment, purchase orientation, perceived usefulness, and intention to buy. These factors were tested and proved to be valid with Cronbach's Alpha value being more than 0.5 and reliable with the value of the loading factor a greater than 0.6. Criteria The factors of the findings for further analysis of the relationship between factors and other variables. © 2023 IEEE.

关键词： Domestic appliances

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：