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2nd International Conference on Energy, Environmental and Information System, ICENIS 2017

作者： Rahayu, Suparni Setyowati Budiyono, Budiyono Purwanto, Purwanto Mechanical Engineering Department State Polytechnic of Semarang Indonesia Doctoral Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

A research on developing a system that integrates clean production and waste water treatment for biogas production in tofu small industry has been conducted. In this research, tofu waste water was turned into biogas using an AnSBR reactor. Mud from the sewage system serves as the inoculums. This research involved: (1) workshop;(2) supervising;(3) technical meeting;(4) network meeting, and (5) technical application. Implementation of clean production integrated with waste water treatment reduced the amount of waste water to be treated in a treatment plant. This means less cost for construction and operation of waste water treatment plants, as inherent limitations associated with such plants like lack of fund, limited area, and technological issues are inevitable. Implementation of clean production prior to waste water treatment reduces pollution figures down to certain levels that limitations in waste water treatment plants can be covered. Results show that biogas in 16 days HRT in an AnSBR reactor contains CH4(78.26 %) and CO2 (20.16 %). Meanwhile, treatments using a conventional bio-digester result in biogas with 72.16 % CH4 and 18.12 % CO2. Hence, biogas efficiency for the AnSBR system is 2.14 times greater than that of a conventional bio-digester. © 2018 The Authors, published by EDP sciences.

关键词： Biogas

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Composition-Tunable Antiperovskite CuxIn1−xNNi3 as Superior Electrocatalysts for the Hydrogen Evolution Reaction

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Angewandte Chemie 2020年第40期132卷

作者： Zhang J. Zhang L. Du L. Xin H.L. Goodenough J.B. Cui Z. The Key Laboratory of Fuel Cell Technology of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China Department of Physics and Astronomy University of California Irvine CA 92697 United States Materials Science and Engineering Program & Texas Materials Institute The University of Texas at Austin Austin TX 78712 United States

A group of newly reported antiperovskite nitrides CuxIn1−xNNi3 (0≤x≤1) with tunable composition are employed as electrocatalysts for the hydrogen evolution reaction (HER). Cu0.4In0.6NNi3 shows the highest intrinsic performance among all developed catalysts with an overpotential of merely 42 mV at 10 mA cmgeo−2. Stability tests at a high current density of 100 mA cmgeo−2 show its super-stable performance with only 7 mV increase in overpotential after more than 60 hours of measurement, surpassing commercial Pt/C (increase of 170 mV). By partial substitution, the derived antiperovskite nitride achieves a smaller kinetic barrier of water dissociation compared to the unsubstituted InNNi3 and CuNNi3, revealed by first-principle calculations. It is found that the partially substituted CuxIn1−xNNi3 possesses a thermal neutral and desirable Gibbs free energy of hydrogen for HER, ascribed to the tailoring of the energy of d-band center arose by the A-site (A=Cu or In) substitution and a resulting optimization of adsorbate interactions. © 2020 Wiley-VCH GmbH

关键词： antiperovskite nitride CuxIn1−xNi3 electrocatalyst hydrogen evolution water dissociation

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Corrigendum to ‘Study of Carbon Supported CuPd Alloy Nanoparticles with Pd-Rich Surface for the Electrochemical Formate Oxidation and CO 2 Reduction’ [Electrochimica Acta, 387 (2021) 138531]

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Electrochimica Acta 2021年 389卷

作者： Wei Jyun Wang Sooyeon Hwang Taejin Kim Su Ha Louis Scudiero The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Wegner Hall Room 105 1505 NE Stadium Way Pullman WA 99164 Center for Functional Nanomaterial Brookhaven National Laboratory Upton NY 11973 Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook NY 11794 USA Chemistry Department and Materials Science and Engineering Program Washington State University PO Box 644630 Pullman WA 99164-4630

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Corrigendum to ‘Stocks and flows of sand, gravel, and crushed stone in China (1978-2018): Evidence of the peaking and structural transformation of supply and demand’

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Resources, Conservation and Recycling 2022年 182卷

作者： Zijian Ren Meng Jiang Dingjiang Chen Yadong Yu Fei Li Ming Xu Stefan Bringezu Bing Zhu Department of Chemical Engineering Tsinghua University Beijing 100084 China Institute for Circular Economy Tsinghua University Beijing 100084 China Department of Energy and Process Engineering Norwegian University of Science and Technology (NTNU) Trondheim 7495 Norway School of Business East China University of Science and Technology Shanghai 200237 China School of Civil and Transportation Engineering Beijing University of Civil Engineering and Architecture Beijing 100044 China School for Environment and Sustainability University of Michigan Ann Arbor MI 48109-1041 USA Department of Civil and Environmental Engineering University of Michigan Ann Arbor MI 48109-2125 USA Center for Environmental Systems Research (CESR) University of Kassel Kassel 34109 Germany Energy Climate and Environment Program International Institute for Applied Systems Analysis (IIASA) Schlossplatz 1 Laxenburg 2361 Austria

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Novel eco-friendly acid-base indicators from innovative plant-based sources: Water-based extraction and applications in titration

Next Research

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Next Research 2025年第1期2卷

作者： Sinélcio Samuel Taualia Ali Achira Germildo Juvenal Muchave Célio Matias Airone Macalia Neuana Fernando Neuana Ana Paula Capelezzo Raimundo Rafael Gamela Domingos Lusitâneo Pier Macuvele Department of Science Engineering Technology and Mathematics Center for Studies in Science and Technology (NECET) University of Rovuma Lichinga Niassa Mozambique Instituto de Química e Biotecnologia (IQB/UFAL) Universidade Federal de Alagoas Maceió Brazil Research Department Open University ISCED Rua Paiva Couceiro 148/07 Macuti Beira Mozambique Green Technologies Laboratory Escola de Química Universidade Federal do Rio de Janeiro Rio de Janeiro Rio de Janeiro 21941-909 Brazil Programa de Pós-graduação em Ciência e Engenharia de Materiais-PPGCEM Universidade Federal de Amazonas Manaus Amazonas Brazil Chemical Department Engineering Community University of Chapecó Region (Unochapecó) Chapecó SC Brazil Division of Agriculture High Polytechnique Institute of Gaza (ISPG) Lionde Chòkwé Gaza CP 1204 Mozambique Graduate Program in Chemical Enginering Santa Catarina Federal University (UFSC) Florianópolis SC Brazil

Researching new plants as potential green indicators marks a meaningful step toward sustainability in analytical chemistry. This study aimed to identify plants with viable applications as eco-friendly indicators in acid-base titration. For this purpose, ten plants were selected based on distinct color properties, namely Euphorbia cotinifolia, Acalypha wilkesiana, Alternanthera brasiliana, Mirabilis jalapa, Datura metel, Euphorbia milii, Jacaranda mimosifolia, Luffa aegyptiaca, Senna didymobotrya , and Canna indica . Aqueous extracts were obtained by maceration, and their performance as acid-base indicators was evaluated and compared with synthetic indicators phenolphthalein and bromothymol blue. The results demonstrated that six of the ten extracts— Euphorbia cotinifolia, Acalypha wilkesiana, Alternanthera brasiliana, Mirabilis jalapa, Datura metel , and Euphorbia milii —were effective in producing visible color changes across pH levels. Notably, the extracts of Alternanthera brasiliana, Acalypha wilkesiana , and Euphorbia milii exhibited highly perceptible color transitions at different pH values, with equivalence points that closely aligned with those obtained by synthetic indicators in all titration types. The titrant volume using natural acid-base indicators was between 4.21 ± 0.06 mL (CH 3 COOH/NH 4 OH) and 7.60 ± 0.44 mL (HCl/NH 4 OH). Statistical analysis revealed significant differences in titrant excesses between these natural extracts and synthetic indicators, with Acalypha wilkesiana and Alternanthera brasiliana achieving up to 15×10 -5 lower HCl excess, indicating their sensitive and precise response in color transition, reinforcing their potential as reliable acid-base indicators. These findings validate the ecological and practical advantages of these plant-based indicators, which are locally available, cost-effective, and stable throughout titrations. As such, they represent a promising and sustainable alternative for laboratories and industries, with

关键词： Plant extracts Eco-friendly acid-base indicators Titration Environment sustainability Green chemistry

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Mixed-linker strategy for suppressing structural flexibility of metal-organic framework membranes for gas separation

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Communications Chemistry 2023年第1期6卷 1-12页

作者： Chung-Kai Chang Yen-Chun Lin Yi-Pei Li Dun-Yen Kang Ting-Rong Ko Tsai-Yu Lin Heng-Liang Wu Hyun Jung Yu Jong Suk Lee Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University (NTU-MST) No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Center of Atomic Initiative for New Materials National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Center for Condensed Matter Sciences National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Department of Chemical and Biomolecular Engineering Sogang University Baekbeom-ro 35 Mapo-gu Seoul 04107 Republic of Korea

Structural flexibility is a critical issue that limits the application of metal-organic framework (MOF) membranes for gas separation. Herein we propose a mixed-linker approach to suppress the structural flexibility of the CAU-10-based (CAU = Christian-Albrechts-University) membranes. Specifically, pure CAU-10-PDC membranes display high separation performance but at the same time are highly unstable for the separation of CO2/CH4. A partial substitution (30 mol.%) of the linker PDC with BDC significantly improves its stability. Such an approach also allows for decreasing the aperture size of MOFs. The optimized CAU-10-PDC-H (70/30) membrane possesses a high separation performance for CO2/CH4(separation factor of 74.2 and CO2permeability of 1,111.1 Barrer under 2 bar of feed pressure at 35°C). A combination of in situ characterization with X-ray diffraction (XRD) and diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, as well as periodic density functional theory (DFT) calculations, unveils the origin of the mixed-linker approach to enhancing the structural stability of the mixed-linker CAU-10-based membranes during the gas permeation tests.

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Topochemical Synthesis of Ca3CrN3H Involving a Rotational Structural Transformation for Catalytic Ammonia Synthesis

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Angewandte Chemie 2022年第39期134卷

作者： Yu Cao Dr. Maria A. Kirsanova Prof. Masayuki Ochi Dr. Walid Al Maksoud Dr. Tong Zhu Dr. Rohit Rai Shenghan Gao Tatsuya Tsumori Dr. Shintaro Kobayashi Dr. Shogo Kawaguchi Dr. Edy Abou-Hamad Prof. Kazuhiko Kuroki Prof. Cédric Tassel Prof. Artem M. Abakumov Prof. Yoji Kobayashi Prof. Hiroshi Kageyama Department of Energy and Hydrocarbon Chemistry Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8510 Japan Center for Energy Science and Technology Skolkovo Institute of Science and Technology Nobel str. 3 121205 Moscow Russia Department of Physics Osaka University Toyonaka Osaka 560-0043 Japan Chemical Science Program KAUST Catalysis Center Division of Physical Science and Engineering King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Japan Synchrotron Radiation Research Institute Sayo-cho Hyogo 679-5198 Japan Imaging and Characterization Department Core Labs King Abdullah University of Science and Technology Thuwal 23955 Saudi Arabia

Topochemical reactions have led to great progress in the discovery of new metastable compounds with novel chemical and physical properties. With these reactions, the overall crystal structure of the host material is generally maintained. Here we report a topochemical synthesis of a hexagonal nitride hydride, h -Ca 3 CrN 3 H, by heating an orthorhombic nitride, o -Ca 3 CrN 3 , under hydrogen at 673 K, accompanied by a rotational structural transformation. The hydrogen intercalation modifies the Ca−N rock-salt-like atomic packing in o -Ca 3 CrN 3 to a face-sharing octahedral chain in h -Ca 3 CrN 3 H, mimicking a “hinged tessellation” movement. In addition, the h -Ca 3 CrN 3 H exhibited stable ammonia synthesis activity when used as a catalyst.

关键词： Ammonia Synthesis Catalysis Hydrides Mixed Anions Nitrides Topochemistry

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Interpretable network propagation with application to expanding the repertoire of human proteins that interact with SARS-CoV-2

arXiv

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arXiv 2020年

作者： Law, Jeffrey N. Akers, Kyle Tasnina, Nure Della Santina, Catherine M. Deutsch, Shay Kshirsagar, Meghana Klein-Seetharaman, Judith Crovella, Mark Rajagopalan, Padmavathy Kasif, Simon Murali, T.M. Interdisciplinary Ph.D. Program in Genetics Bioinformatics and Computational Biology BlacksburgVA United States Department of Computer Science Virginia Tech BlacksburgVA United States Department of Biomedical Engineering Boston University BostonMA United States Department of Mathematics University of California Los AngelesCA United States AI for Good Lab Microsoft RedmondWA United States Department of Chemistry Colorado School of Mines GoldenCO United States Department of Computer Science Boston University BostonMA United States Department of Chemical Engineering Virginia Tech BlacksburgVA United States

Background: Network propagation has been widely used for nearly 20 years to predict gene functions and phenotypes. Despite the popularity of this approach, little attention has been paid to the question of provenance tracing in this context, e.g., determining how much any experimental observation in the input contributes to the score of every prediction. Results: We design a network propagation framework with two novel components and apply it to predict human proteins that directly or indirectly interact with SARS-CoV-2 proteins. First, we trace the provenance of each prediction to its experimentally validated sources, which in our case are human proteins experimentally determined to interact with viral proteins. Second, we design a technique that helps to reduce the manual adjustment of parameters by users. We find that for every top-ranking prediction, the highest contribution to its score arises from a direct neighbor in a human protein-protein interaction network. We further analyze these results to develop functional insights on SARS-CoV-2 that expand on known biology such as the connection between endoplasmic reticulum stress, HSPA5, and anti-clotting agents. Conclusions: We examine how our provenance tracing method can be generalized to a broad class of network-based algorithms. We provide a useful resource for the SARS-CoV-2 community that implicates many previously undocumented proteins with putative functional relationships to viral infection. This resource includes potential drugs that can be opportunistically repositioned to target these proteins. We also discuss how our overall framework can be extended to other, newly-emerging viruses. © 2020, CC BY-NC-SA.

关键词： SARS

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[email protected] nanocone induced efficient reduction of CO 2 to formate with high current density

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Applied Catalysis A: General 2020年 598卷

作者： Fanghua Zhang Chengzhen Chen Shenglin Yan Juhua Zhong Bo Zhang Zhenmin Cheng State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology Shanghai 200237 China Physics Department School of Science East China University of Science and Technology Shanghai 200237 China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China

Electrochemical conversion of CO 2 into formate provides an attractive approach to store renewable energy in the form of valuable chemical products, but searching for inexpensive catalytic material that can accomplish the reduction of CO 2 to formate with a high selectivity at high current densities remains a challenge. Herein, spiky [email protected] nanocone with a curvature radius of 10 nm were prepared through facile electrochemical coating of a thin layer of Bi over a substrate of Cu nanocone. The [email protected] nanocone exhibits excellent performance for CO 2 reduction, achieving a high faradaic efficiency > 90 % for formate formation in the potential range from −0.75 to −0.95 V, and gives a faradaic efficiency of 96.9 % at −0.95 V at a current density of -31.9 mA cm −2 . The superior performance probably be attributed to the unique conic tip structure, as indicated by comparison to the structure of bulk Bi.

关键词： [email protected] nanocone Conic tip structure CO 2 reduction Formate

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Fluorescence of CdSe/ZnS quantum dots in toluene: effect of cyclic temperature

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Energy Procedia 2019年 158卷 5895-5900页

作者： Ying Chen Weiling Luan Shaofu Zhang Fuqian Yang Key Laboratory of Pressure Systems and Safety (MOE) School of Mechanical and Power Engineering East China University of Science and Technology Shanghai 200237 P.R. China Materials Program Department of Chemical and Materials Engineering University of Kentucky Lexington KY 40513 USA

Quantum dots (QDs) are the potential material for the application in optical thermometry, and have been successfully applied to solar cells, LEDs, bio-labeling, structural health monitoring, etc. In this paper, we study the fluorescence properties of CdSe/ZnS QDs in toluene under the action of heating-cooling cycles. The experimental results show that, in a heating-cooling cycle, increasing temperature causes red-shift of the emission peak and the decrease of the PL intensity, and decreasing temperature causes blue-shift of the emission peak and the increase of the PL intensity. The surface structures of the QDs likely are dependent on the cycle numbers, which cause the change of the excited energy state of the QDs in toluene. The results presented in this paper reveals the strong effects of cyclic temperature on the photoluminescence characteristics of QDs.

关键词： QDs heating-cooling photoluminescence toluene

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