Journal of Physics: Conference Series最新文献_第2页

A MOF-derived carbon-coated Co/CoO nanomaterial for highly efficient activation of PMS to degrade tetracycline 一种mof衍生的碳包覆Co/CoO纳米材料，用于高效活化PMS降解四环素

Journal of Physics: Conference Series Pub Date : 2025-05-01 DOI: 10.1088/1742-6596/3013/1/012003

Dongsheng Wang, Haina Qi, Anran Yu, Limin Tan, Tingyu He

{"title":"A MOF-derived carbon-coated Co/CoO nanomaterial for highly efficient activation of PMS to degrade tetracycline","authors":"Dongsheng Wang, Haina Qi, Anran Yu, Limin Tan, Tingyu He","doi":"10.1088/1742-6596/3013/1/012003","DOIUrl":"https://doi.org/10.1088/1742-6596/3013/1/012003","url":null,"abstract":"Abstract This study successfully fabricated a carbon-based material Co/CoO@NC catalyst derived from Co-MOF and applied it to activate PMS for the degradation of tetracycline. In the TC degradation experiments, Co/CoO@NC demonstrated remarkable catalytic performance. Under specific circumstances, only a small quantity of Co/CoO@NC was sufficient to activate PMS effectively, accomplishing the degradation of TC in a short time, with a degradation rate reaching up to 93.3%. The study on reaction kinetics revealed that the degradation process conformed to a first-order reaction kinetics model, and the reaction rate constant was 0.0360 min −1 . Additionally, the impacts of different reaction parameters such as PMS concentration, Co/CoO@NC dosage, solution pH value, and catalyst recycling times on the degradation effect were systematically examined. Meanwhile, the possible catalytic mechanism was explored through free radical capture experiments, which elucidated the essential roles of active species like SO 4 ·− , ·OH, and ·O 2 − in the TC degradation process. This study has provided more possibilities for the application of carbon-based catalysts derived from MOF precursors in the field of environmental remediation and demonstrated their great potential in treating wastewater containing tetracycline antibiotics.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3013 1","pages":"012003-012003"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vertically aligned flower-like phosphorus-doped MoSe₂ for hydrogen evolution reaction 垂直排列花状掺磷MoSe2的析氢反应

Journal of Physics: Conference Series Pub Date : 2025-05-01 DOI: 10.1088/1742-6596/3008/1/012032

Qili Wang, Jing Chen

{"title":"Vertically aligned flower-like phosphorus-doped MoSe<sub>2</sub> for hydrogen evolution reaction","authors":"Qili Wang, Jing Chen","doi":"10.1088/1742-6596/3008/1/012032","DOIUrl":"https://doi.org/10.1088/1742-6596/3008/1/012032","url":null,"abstract":"Abstract In the context of escalating environmental pollution and the persistent energy crisis, there is an increasing demand for new and clean energy sources. The subject of hydrogen energy has attracted extensive attention from the public because of its remarkably high energy density and zero-emission environmental characteristics. It is regarded as a potentially significant energy source, with the potential to displace fossil fuels in the future, thereby marking a new era in energy transformation and sustainable development. However, the lack of inexpensive, abundant, and high-performance electrocatalysts hinders the advancement of hydrogen energy. In this paper, we have synthesized MoSe 2 by hydrothermal method and subsequently prepared phosphorusdoped MoSe 2 (P-MoSe 2 ) by phosphorization treatment. The P-MoSe 2 catalyst prepared in this study demonstrated excellent hydrogen evolution performance in an alkaline environment. At the prevailing current density of 10 mA·cm -2 , the catalyst demonstrated superior performance, exhibiting an overpotential of 173 mV and the Tafel slope was determined to be 88.91 mV/dec -1 . This finding provides novel insights and avenues for the exploration of new types of hydrogen evolution catalysts, thereby facilitating technical progress and practical applications in this field.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3008 1","pages":"012032-012032"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Methane Production Of Food Waste Via Conductive Materials In Two-phase Anaerobic Digestion: Substance Conversion And Microbial Communities 在两相厌氧消化中通过导电材料提高食物垃圾的甲烷产量：物质转化和微生物群落

Journal of Physics: Conference Series Pub Date : 2025-05-01 DOI: 10.1088/1742-6596/3015/1/012024

Rufei Liu, Weijie Fan, Jie Liu

{"title":"Enhanced Methane Production Of Food Waste Via Conductive Materials In Two-phase Anaerobic Digestion: Substance Conversion And Microbial Communities","authors":"Rufei Liu, Weijie Fan, Jie Liu","doi":"10.1088/1742-6596/3015/1/012024","DOIUrl":"https://doi.org/10.1088/1742-6596/3015/1/012024","url":null,"abstract":"Abstract The treatment and resource utilization of solid waste were the important problems that should be solved instantly. Food waste was an organic solid waste available for the production of sustainable energy. This study investigated the effects of activated carbon (AC), zero-valent iron (ZVI), and magnetite (Mt) on two-phase anaerobic digestion performance of food waste. The results suggested that adding ZVI in the acidification phase improved the concentration of volatile fatty acid by 46.4%-47.9% than that of the control group, which provided a better initial condition for the methanation phase and decreased the delay time of methane production. In the methanation phase, adding AC and Mt increased the methane production by 28.1%-68.4% compared with the control group. The analysis of microbial community structure indicated that adding ZVI improved the relative abundance of hydrolytic acidifying bacteria, including Corvnebacteriun , Fastidiosipila , Gallicola , and Syntrophaceticus in the acidification phase. Moreover, the addition of conductive materials promoted the dominant relative abundance of Methanobacterium , Methanoculleus , and Methanosarcina to stimulate the multiple methanogenic pathways of hydrogen and acetic acid.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"3015 1","pages":"012024-012024"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Encapsulation of Urea Fertilizer in Natural Polymer Chitosan using the Ionic Gelation Emulsion Method 天然高分子壳聚糖离子胶凝乳液法包封尿素肥料

Journal of Physics: Conference Series Pub Date : 2025-03-01 DOI: 10.1088/1742-6596/2973/1/012018

Mahir A. Jalal, Christina Winarti, Mersi Kurniati

{"title":"Encapsulation of Urea Fertilizer in Natural Polymer Chitosan using the Ionic Gelation Emulsion Method","authors":"Mahir A. Jalal, Christina Winarti, Mersi Kurniati","doi":"10.1088/1742-6596/2973/1/012018","DOIUrl":"https://doi.org/10.1088/1742-6596/2973/1/012018","url":null,"abstract":"Abstract Using urea fertilizer directly over a long period will damage soil quality. Encapsulating urea fertilizer in a material can initiate a slow release of fertilizer to reduce fertilizer residue in the soil. In this research, encapsulation of urea fertilizer using the ionic gelation emulsion method, put on chitosan as a polymer component, sodium tripolyphosphate as an ionic cross-linking agent, and polysorbates as a surfactant or emulsifying agent. Chitosan-urea nanoemulsions were made by varying the chitosan concentration to obtain nanoemulsion droplet size and porous particles. The nanoemulsion diameter size of particle was characterized using a particle size analyzer (PSA), functional groups were investigated using a Fourier-transmission infrared spectrometer, and surface morphology was using a scanning electron microscope. The result showed the average diameter of the chitosan-urea particles at the nano droplet range 140.53 nm – 787.55 nm. Spectrum band analysis obtained vibrations from the amino (-NH 2 ) and hydroxyl (-OH) functional groups, aromatic nitro compounds which indicate a combination of chitosan and the ionic cross-linking agent sodium tripolyphosphate, secondary amine (N-H) related to chitosan and amide and C-N compounds related to urea fertilizer. The morphological structure of chitosan-urea nanoemulsion for all concentrations shows a porous surface with particles that have aggregation due to the freeze-drying process. The addition of chitosan concentration can reduce the porosity of chitosan-urea. These results show the potential of gelation ionic emulsion as a method for encapsulating urea into polymers to support the slow-release fertilizer.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"2973 1","pages":"012018-012018"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1088/1742-6596/2973/1/012018/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-assembled micelles prepared from amphiphilic Dextran-Jeffamine diblock copolymers 两亲性葡聚糖-杰弗明二嵌段共聚物制备的自组装胶束

Journal of Physics: Conference Series Pub Date : 2025-02-01 DOI: 10.1088/1742-6596/2961/1/012012

Shuxin Wang, Mengxiao Sun, Zhaoning Zeng, Dandan Wang, Xin Shen, Suming Li, Feng Su

{"title":"Self-assembled micelles prepared from amphiphilic Dextran-Jeffamine diblock copolymers","authors":"Shuxin Wang, Mengxiao Sun, Zhaoning Zeng, Dandan Wang, Xin Shen, Suming Li, Feng Su","doi":"10.1088/1742-6596/2961/1/012012","DOIUrl":"https://doi.org/10.1088/1742-6596/2961/1/012012","url":null,"abstract":"Abstract The creation of Dextran-Jeffamine (DEX-JEF) amphiphilic block polymers was achieved through the process of reductive amination. This synthesis involved reacting the semi-acetal terminal of the hydrophilic dextran (DEX) with the amine termini of Jeffamine (JEF), which could be in monoamine, diamine, or triamine forms. The result was a collection of block copolymers that included diblock, triblock, and triarm structures, each with distinct hydrophilic ratios and varying block lengths. These polymers were thoroughly analyzed by using nuclear magnetic resonance (NMR) spectroscopy and Fourier-transform infrared (FT-IR) spectroscopy to determine their structural characteristics. After the DEX-JEF polymer was self-assembled into micelles in a water medium, the micellar structure, dimensions, and zeta potential were analyzed by using Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS) techniques. Furthermore, the stability of the micelles was assessed by determining the Critical Micelle Concentration (CMC) through fluorescence spectroscopy measurements. Finally, the drug-carrying properties of the polymer micelles were also evaluated. The results showed that the micelle sizes ranged from 104.6-202.1 nm, CMC ranging from 0.04-0.28 mg/mL, and drug loading ranging from 4.71-7.16%. It is expected to be a potential drug carrier.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"2961 1","pages":"012012-012012"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ polarized scaffold activated by ultrasound cycle 超声循环激活原位极化支架

Journal of Physics: Conference Series Pub Date : 2025-02-01 DOI: 10.1088/1742-6596/2954/1/012046

Xing Zhang

{"title":"In-situ polarized scaffold activated by ultrasound cycle","authors":"Xing Zhang","doi":"10.1088/1742-6596/2954/1/012046","DOIUrl":"https://doi.org/10.1088/1742-6596/2954/1/012046","url":null,"abstract":"Abstract Intervention measures are essential in clinically treating significant bone defects or poor osteogenic conditions. Although autologous transplantation is the preferred method, it has the risk of secondary injury and infection. Bone tissue engineering technology uses biomaterial scaffolds and biochemical and biophysical signals to regulate cell behaviour and promote tissue repair. The Endogenous electric field is vital in tissue regeneration, especially in bone. The piezoelectric effect of collagen matrix is closely related to bone growth and remodelling. This study prepared PCL/PTFE composite scaffolds by melting near-field direct writing technology, and an in-situ polarized was realized during the printing process. Then, periodic ultrasonic excitation was introduced to improve the polarized scaffold’s potential attenuation and realize the scaffold’s piezoelectric excitation. The results showed that the in-situ polarized scaffold could significantly promote cell proliferation and osteogenic differentiation under cyclic ultrasound stimulation. The scheme of in situ polarized scaffold combined with ultrasonic stimulation proposed in this study is expected to be applied to repair bone tissue defects and has a broad application potential.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"2954 1","pages":"012046-012046"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Calibration with Different Matrix Reference Materials on the Accuracy of Oxygen Determination by Inert Gas Fusion-Infrared Absorptiometry 不同基质标准物质对惰性气体融合-红外吸收法测定氧气准确度的影响

Journal of Physics: Conference Series Pub Date : 2025-02-01 DOI: 10.1088/1742-6596/2959/1/012004

Ying Li, Ziheng Sang, Zhihe Zhao, Li Zhu, Xiaolu Shi, Huanming Lu, Yingli Sun, Peiling Ke, Gongjun Zhang

引用次数: 0

Research on predicting air resistance in complex pipelines with fans 带风机的复杂管道空气阻力预测研究

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012033

Shengli Zhang, Zhichun Zeng, Yupei Sun, Long He, Changhao Wang

引用次数: 0

Stellar models with like-Wyman IIa complexity factor 具有类似韦曼 IIa 复杂因子的恒星模型

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2796/1/012007

J. Andrade, D. Andrade

引用次数: 0

Geometry-based multi-beam survey line layout problem 基于几何学的多波束测量线布局问题

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012022

Chuangqi Li, Yuhang Wang, Fan Hu

引用次数: 0