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Towards sustainability by integrated microbial degradation and closed-loop biological recycling of the copolymer poly (3-hydroxybutyrate-co-3-hydroxyvalerate) by Azohydromonas australica DSM 1124

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Polymer Degradation and Stability 2025年 239卷

作者： Nanthachai, Sirirach Kim, Beom Soo Honda, Kohsuke Napathorn, Suchada Chanprateep Department of Microbiology Faculty of Science Chulalongkorn University Phayathai Road Pathumwan Bangkok10330 Thailand Program in Biotechnology Faculty of Science Chulalongkorn University Phayathai Road Pathumwan Bangkok10330 Thailand Department of Chemical Engineering Chungbuk National University Cheongju Chungbuk28644 Korea Republic of International Center for Biotechnology Osaka University 2-1 Yamadaoka Suita Osaka565-0871 Japan

Achieving a fully closed-loop waste management system for polyhydroxyalkanoates (PHA) is a key focus for sustainable solutions. Among the one hundred forty-two PHA-producing strains tested, Azohydromonas australica DSM 1124 showed a remarkable ability to degrade poly (3-hydroxybutyrate-co-3-hydroxyvalerate, PHBV) on PHBV-suspended agar media. The effects of different carbon‒nitrogen (C/N) ratios (mol/mol) were investigated in mineral salt media (MSM) and compared with those in yeast extract peptone (YP) media. The C/N ratio of 770 yielded the greatest PHBV degradation, with 79.4 ± 4.8 % film weight loss, and subsequently resulted in 27.6 ± 2.2 % PHA content and a YP/S of 0.245 g-PHBV produced/g-PHBV film in a one pot process. Various techniques were employed, including differential scanning calorimetry (DSC), scanning electron microscopy (SEM), gel permeation chromatography (GPC) and X-ray diffraction (XRD). X-ray diffraction confirmed that orthorhombic α-form crystals with helical chain conformations and β-form crystals with planar zigzag conformations were significantly degraded. Biological recycling in a 10-L fermenter resulted in 70.3 ± 0.1 % PHBV film weight loss by the action of PHA depolymerase enzymes, leading to the formation of oligomers and monomers. Subsequently, A. australica DSM 1124 has assimilated and internalized these monomers as substrates for the biosynthesis of renewed PHBV, achieving a PHA content of 12.9 ± 0.1 %. This study demonstrates the potential of A. australica DSM 1124 for integrated microbial degradation and closed-loop recycling, offering a one-pot sustainable approach to mitigate PHA waste accumulation in ecosystems. © 2025 Elsevier Ltd

关键词： Gel permeation chromatography

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Stable Cycling of Sodium All-Solid-State Batteries with High-Capacity Cathode Presodiation

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Advanced Energy Materials 2025年第0期

作者： Tang, Wei Xu, Dapeng Wu, Junlin Lee, Dong Ju Fuqua, Alexander Li, Feng Jeon, Yuju Bian, Wenjuan Chen, Zheng Aiiso Yufeng Li Department of Chemical and Nano Engineering University of California La Jolla San DiegoCA92093 United States Program of Materials Science and Engineering University of California La Jolla San DiegoCA92093 United States Energy and Environment Science and Technology Idaho National Laboratory Idaho FallsID83415 United States Sustainable Power and Energy Center University of California La Jolla San DiegoCA92093 United States

Sodium all-solid-state batteries (NaSSBs) with an alloy-type anode (e.g., Sn and Sb) offer superior capacity and energy density compared to hard carbon anode. However, the irreversible loss of Na+ at the alloy anode during the initial cycle results in diminished capacity and stability, impairing full-cell performance. This study presents an easy-to-implement cathode presodiation strategy by employing a Na-rich material to address these challenges. Leveraging the high theoretical capacity and suitable voltage window, Na2S is chosen as the Na donor, which is activated by creating a mixed electron-ion conducting network, delivering a high capacity of 511.7 mAh g−1. By adding a small amount (i.e., 3 wt.%) of Na2S to the cathode composite, a NaCrO2 || Sn full cell demonstrated capacity improvement from 90.8 to 118.2 mAh g−1 (based on cathode mass). The capacity-balanced full cell can thus cycle to more than 300 times with >90% capacity retention. This work provides a practical solution to enhance the full-cell performance and advance the transformation from half-cell to full-cell applications of NaSSBs. © 2025 Wiley-VCH GmbH.

关键词： Solid-State Batteries

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A GENERAL APPROACH TO DETERMINING THE EVOLUTION OF MOLECULAR WEIGHT DISTRIBUTION CURVES OF LINEAR POLYMERS UNDERGOING CHAIN SCISSION

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Chinese Journal of Polymer science 2013年第7期31卷 1056-1060页

作者： Zhuo-li Lin Jun Luo Zheng-jian Chen Ke-hua Tu 王利群王衍伟 MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University Department of Polymer Science and Engineering College of ChemistryChemical Engineering and Materials ScienceSoochow University

A numerical method is developed to compute the development of molecular weight distribution （MWD） curves of linear polymers undergoing chain scission. The method can be applied to complex chain scission kinetics and for arbitrarily complex initial MWD curves. Our method is based on the method of lines （MoL）. Different from the existing numerical scheme, we propose the use of logarithmically spaced points. This development ensures the accuracy of the computed MWD curves at low molecular weights, and it does not require a very fine discretization to produce an accurate result.

关键词： Polymer degradation Reaction kinetics Molecular weight distribution Modeling.

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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long Ye Lijian Zuo Ke Gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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Anion-Deficient Transition Metal Oxynitrides as Anode Materials for Solid Oxide Fuel Cells

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Chemistry - A European Journal 2025年第26期31卷 e202500503页

作者： Zhang, Shi-Rui Wang, Xiao-Ming Li, Wen Fang, Lei-Ming Liu, Tian-Hui Yang, Zu-Pei Kuang, Xiao-Jun Jiao, Huan Department of Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Laboratory for Advanced Energy Technology School of Chemistry & Chemical Engineering Shaanxi Normal University Shaanxi Province Xi'an710062 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Sichuan Mianyang621900 China Advanced Materials Research Group Faculty of Engineering The University of Nottingham University Park NottinghamNG7 2RD United Kingdom Industrial Training Centre Shenzhen Polytechnic University Guangdong Province Shenzhen518055 China School of Materials Science and Engineering Shaanxi Normal University Shaanxi Xi'an710062 China Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin541004 China

Transition metal oxynitrides, with their unique electronic structures and excellent conductivity, hold significant promise as anode materials in fuel cells. In this study, we synthesized and characterized two novel anion-deficient transition metal oxynitrides: Ca4La8V4O8N12 and Sr3La9V4O7N13. Their crystal structures were determined via Rietveld refinement of X-ray and neutron diffraction data, revealing a higher concentration of anion vacancies in Sr3La9V4O7N13. As a result, Sr3La9V4O7N13 exhibits significantly enhanced electrical conductivity compared to Ca4La8V4O8N12. Density functional theory (DFT) calculations indicate that Sr3La9V4O7N13 possesses higher defect formation energies, influencing its band structure and facilitating electron transitions, thereby enhancing conductivity. This study underscores the role of anion deficiencies in modulating the electronic properties of transition metal oxynitrides and offers new insights for designing high-performance anode materials for solid oxide fuel cells (SOFCs). © 2025 Wiley-VCH GmbH.

关键词： Rietveld refinement

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Mechanistic insights into CO₂ photoreduction to formic acid using ZnO catalysts

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chemical engineering Research and Design 2025年 218卷 664-673页

作者： Astuti, Andi Rina Ayu Ariono, Danu Wenten, I. Gede Sasongko, Dwiwahju Saputera, Wibawa Hendra Kurnia, Kiki Adi Department of Chemical Engineering Faculty of Industrial Technology Universitas Muslim Indonesia Jl. Urip Sumoharjo Km. 05 Makassar 90231 Indonesia Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Research Center for Nanosciences and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Research Group on Energy and Chemical Engineering Processing System Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Center for Catalysis and Reaction Engineering Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Research Center for New and Renewable Energy Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Utilization and Flare Gas Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Postgraduate program of Science in Sustainability Faculty of Infrastructure Planning Universitas PERTAMINA Jl. Teuku Nyak Arif Jakarta 12220 Indonesia

The conversion of CO2 into formic acid (HCOOH) is vital due to rising atmospheric CO2 levels and the high market value of HCOOH among CO2 utilization products. A photocatalytic technology offers a promising method for... 详细信息

The conversion of CO₂ into formic acid (HCOOH) is vital due to rising atmospheric CO₂ levels and the high market value of HCOOH among CO₂ utilization products. A photocatalytic technology offers a promising method for this transformation using sustainable energy. However, the lack of the exact mechanism of CO₂ reduction into HCOOH using heterogeneous catalyst and light energy remains unclear. Therefore, this study explores the reaction pathways validated with experimental data and density functional theory (DFT) calculation. Based on the experiment, ZnO semiconductor catalysts achieved the highest formic acid production, with a concentration of 345.44 µmol/L·g_cat after 4 hours of operation at a gas flow rate of 800 mL/min. Among the four proposed mechanisms, CO₂ photoreduction to HCOOH follows the Eley-Rideal adsorption mechanism, where only reactant of 2H⁺ undergoes chemisorption, while CO₂ remains physisorbed. Additionally, HCOOH exhibits strong adsorption on ZnO surface, as confirmed by experimental data and adsorption energy calculations. DFT calculations using CRYSTAL14 and the B3LYP method support this finding. The weak physisorption energy (less than 0.5 eV) allows CO₂ to undergo direct reactions on the catalyst surface. This study elucidates the role of each component in enhancing CO₂ photoreduction to HCOOH and provides a foundation for further research on CO₂ utilization. © 2025

关键词： CO2 Photoreduction Density functional theory Eley-Rideal mechanism Flue gas Formic acid Green Energy ZnO catalysts

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Near-infrared photodetection in tin halide perovskites via compositional engineering

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Materials science and engineering R: Reports 2025年 165卷

作者： Park, Hansol Lee, Cheong Beom Lim, Seon-Jeong Kim, Hakjun Kim, Kyeounghak Park, Hui Joon Department of Organic and Nano Engineering Hanyang University Seoul04763 Korea Republic of Human-Tech Convergence Program Hanyang University Seoul04763 Korea Republic of Department of Chemistry Hanyang University Seoul04763 Korea Republic of Samsung Advanced Institute of Technology Samsung Electronics Suwon16678 Korea Republic of Department of Chemical Engineering Hanyang University Seoul04763 Korea Republic of Department of Semiconductor Engineering Hanyang University Seoul04763 Korea Republic of Institute of Nano Science Technology Hanyang University Seoul04763 Korea Republic of

Tin (Sn) halide perovskites, with an optical bandgap below 1.4 eV, are promising for near-infrared photodetectors (NIR-PDs). However, their inherent instability due to Sn2+ oxidation and sensitivity to processing often results in non-uniform films with low crystallinity. Most research has focused on formamidinium tin triiodide (FASnI3), while methylammonium tin triiodide (MASnI3), with an optical bandgap of 1.2–1.3 eV and light absorption in the 300–1100 nm range, has been less explored due to its instability. Here, we demonstrate that substituting A-site cations (Cs and Rb) and X-site halides (Cl) in MASnI3 significantly enhances its stability, improving crystallinity and reducing trap density. PD devices with modified MASnI3 exhibit enhanced photo-response across the visible to NIR region, achieving specific detectivity over 1.7 × 1012 Jones at 940 nm, with a fast response time (trise/tfall = 3.85 μs/5.70 μs) under low irradiance of 0.104 mW cm−2. © 2025 Elsevier B.V.

关键词： Photodetectors

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Transesterification of glyceryl tributyrate with methanol using strontium borate as the solid base catalyst

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science China Chemistry 2013年第12期56卷 1727-1734页

作者： HUANG HongSheng LIU ZhiHong Key Laboratory for Macromolecular Science of Shaanxi Province School of Chemistry and Chemical EngineeringShaanxi Normal University Department of Chemisitry and Chemical Engineering Ankang University

Four kinds of strontium borates were prepared and characterized by XRD, SEM, EDS, TG-DTA and Hammett titration method and their catalytic activities were examined in the transesterification of glyceryl tributyrate with methanol for the first time. The separate effects of the molar ratio of methanol to oil, the reaction time, and reusability were investigated. In addition, the catalytic activities of Sr（OH）2 and SrCO3 were also examined for the comparison. The results showed that the basicity and catalytic activity of these catalysts were decreased as the following order： Sr（OH）2 〉 SrB2O4·4H2O 〉 SrB6O10·5H2O 〉 SrB2O4 〉 SrB6O10 〉 SrCO3, and the reusability decreases as the following order： anhydrous strontium borates （SrBgO4, SrB6O10）〉 hydrated strontium borates （SrB2O4·4H2O, SrB6O10·5H2O）〉 Sr（OH）〉 The results indicate that the SrB2O4·4H2O with regular morphology, which was obtained at low temperature by a simple preparation method, might be as one kind of good potential alkaline earth salts catalyst for transesterification. Moreover, the possible reaction mechanism is proposed and analyzed.

关键词： strontium borate solid base catalyst transesterification glyceryl tributyrate

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Electrostatic self-assembled ceramic magnetic Ti3C2Tx nanocomposites reinforced with hollow Fe3O4 particles for strong and broadband absorption of electromagnetic waves

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Ceramics International 2025年

作者： Guo, Jiang Sun, Yukun Chen, Zhuoran Zhang, Huaguang AlMasoud, Najla Qiu, Hua Guo, Zhanhu Yu, Qifeng Ren, Juanna Alomar, Taghrid S. Zhu, Jianfeng School of Materials Science and Engineering Key Laboratory of Materials and Technology for Unearthed Cultural Heritage Conservation Ministry of Education Shaanxi University of Science & Technology Xi'an710021 China Oil&Gas Technology Research Institute Changqing Oilfield Company Xi'an710018 China Department of Chemistry College of Science Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical Engineering Northwestern Polytechnical University Shaanxi Xi'an710072 China Department of Mechanical and Construction Engineering Faculty of Engineering and Environment Northumbria University Newcastle Upon TyneNE1 8ST United Kingdom College of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan030024 China

Developing materials with strong and broadband electromagnetic wave absorption (EWA) is one of the efficient ways to address the electromagnetic (EM) pollution. In this work, Fe3O4/Ti3C2Tx ceramic composites with a unique heterogeneous structure were constructed by electrostatic self-assembly of lamellar Ti3C2Tx and hollow Fe3O4 (HFO) particles. Altering the content of HFO and Ti3C2Tx successfully tuned the EM parameters. To be specific, when the mass ratio of HFO to Ti3C2Tx is 1:2, effective absorption bandwidth (EAB) is 4.8 GHz at 2.2 mm. Reflection loss (RL) even reaches -57.17 dB at 1.8 mm when HFO to Ti3C2Tx is 2:1. The satisfying EWA performance results from the special heterogeneous structure of the Fe3O4/Ti3C2Tx composites, which significantly optimizes the impedance matching and enhances magnetic and electric losses. Notably, at an incidence angle of 15°, HF/T-2 composites exhibit the largest RCS reduction value (18.73 dB m2) in the computer simulation technology simulation confirming the excellent EWA performance of Fe3O4/Ti3C2Tx ceramic composites. This work provides a new way to prepare magnetic MXene ceramic composites with strong and broadband EWA performance. © 2025 The Author(s)

关键词： Reflection

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Correction: Chitosan-based inks for 3D printing and bioprinting (Green Chemistry (2022) 24 (62-101) DOI: 10.1039/D1GC01799C)

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Green Chemistry 2025年第18期27卷 5388-5388页

作者： Mohsen Taghizadeh Ali Taghizadeh Mohsen Khodadadi Yazdi Payam Zarrintaj Florian J. Stadler Joshua D. Ramsey Sajjad Habibzadeh Somayeh Hosseini Rad Ghasem Naderi Mohammad Reza Saeb Masoud Mozafari Ulrich S. Schubert College of Materials Science and Engineering Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials Shenzhen University Shenzhen 518060 PR China Center of Excellence in Electrochemistry School of Chemistry College of Science University of Tehran Tehran Iran School of Chemical Engineering Oklahoma State University 420 Engineering North Stillwater OK 74078 USA Department of Chemical Engineering Amirkabir University of Technology (Tehran Polytechnic) Tehran 15916-39675 Iran Department of Mechanical Engineering Polytechnique Montreal Montreal QC Canada Iran Polymer and Petrochemical Institute (IPPI) Tehran Iran Department of Polymer Technology Faculty of Chemistry Gdańsk University of Technology G. Narutowicza 11/12 80-233 Gdańsk Poland Department of Tissue Engineering & Regenerative Medicine Faculty of Advanced Technologies in Medicine Iran University of Medical Sciences Tehran Iran Laboratory of Organic and Macromolecular Chemistry (IOMC) Friedrich Schiller University Jena Humboldtstrasse 10 07743 Jena Germany Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich Schiller University Jena Philosophenweg 7a 07743 Jena Germany

In the original publication, an incorrect citation was erroneously included for ref. 161. The authors would like to replace ref. 161 with the correct citation, which is shown below as ref. 1. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers. © 2025 The Royal Society of Chemistry.

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