Article
Chemistry, Physical
Oussama Mehelli, Mehdi Derradji, Raouf Belgacemi, Slimane Abdous
Summary: A new hybrid composite consisting of Ultra High Molecular Weight Polyethylene fibers, epoxy, and boron carbide particles was developed for designing wearable and lightweight protective thermal neutron shields. The hybrid composite achieved both high shielding performance and overall mechanical behavior. Experimental results demonstrated the high shielding efficiency of the developed materials, with the optimal performance achieved at a B4C particle content of 10 wt%.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Oussama Mehelli, Mehdi Derradji, Raouf Belgacemi, Slimane Abdous, Abdelmalek Habes, Wenbin Liu
Summary: Researchers developed a new hybrid composite material for advanced and lightweight thermal neutrons shields, consisting of UHMWPE fibers, epoxy, and boron carbide particles. Neutron shielding tests showed remarkable performances, with the best results achieved at a B4C content of 20 wt%, displaying a macroscopic cross-section (sigma) of 0.313 cm-1 and a mean free path (lambda) of 2.2 cm.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Polymer Science
Slimane Abdous, Mehdi Derradji, Oussama Mehelli, Karim Khiari, Mohamed Elamine Kadi, Abdelmalek Habes, Noureddine Ramdani, Abdeljalil Zegaoui, Wenbin Liu
Summary: The use of epoxy thermosets as the main building blocks for lightweight neutron shields has been restricted, but recent developments in the field of polymers suggest that phthalonitrile (PN) resins have better performances in demanding applications. This study investigates the neutron shielding efficiency and thermal resistance performances of neat PN polymer and its silane surface-modified B4C-reinforced composites. The results show that the neat PN polymer has better thermal neutron screening performances than epoxy and benzoxazine, and the PN composite with 20 wt. % of B4C displays outstanding screening ratio.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Green & Sustainable Science & Technology
Mengge Dong, Suying Zhou, Xiangxin Xue, Xiating Feng, He Yang, M. I. Sayyed, Daria Tishkevich, Alex Trukhanov, Nouf Almousa
Summary: This paper proposes an innovative utilization method of boron bearing blast furnace slag (B3FS) as a highly cost-effective shield for protection against neutron radiation hazards. The prepared shielding composites have shown excellent shielding performance against thermal neutrons and outperformed some commercially available shields.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Construction & Building Technology
Chenhui Zhu, Guo Li, Julian Wang, Shulin Dong, Kelei Cao, Yajun Lv
Summary: This study prepared an unalkaline and alkaline-treated industrial-grade boron carbide neutron-shielding radiation ultra-high performance mortar using a modified Andreasen & Andersen (A & A) model for ratio optimization. The results showed that alkaline-treated boron carbide overcame the adverse effects caused by acid and optimized the pore structure, making it an effective material for preparing high-strength neutron-shielding mortars.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Oussama Mehelli, Mehdi Derradji, Abdelmalek Habes, Nour Elislem Leblalta, Raouf Belgacemi, Slimane Abdous, Yasmine Izri, Wenbin Liu
Summary: This study investigated the neutron shielding efficiency and thermal properties of neat benzoxazine polymer and its B4C-reinforced composites. The results showed that the composite with 20 wt.% of B4C displayed outstanding screening ratio of about 96%. The findings were compared with existing shielding materials to provide comprehensive insights.
HIGH PERFORMANCE POLYMERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Seiichiro Tanaka, Koichi Okuno, Yukiko Takeuchi, Takashi Tabara
Summary: Through experiments and simulations, it was found that the use of boron carbide coating material can effectively reduce neutron activation effects in concrete and other materials, reducing the production of short-lived and long-lived nuclides.
APPLIED RADIATION AND ISOTOPES
(2022)
Article
Polymer Science
Limin Jiao, Yi Wang, Zhihao Wu, Hang Shen, Hanqin Weng, Hongbing Chen, Wei Huang, Mozhen Wang, Xuewu Ge, Mingzhang Lin
Summary: By blending hexagonal boron nitride (h-BN) with epoxy resin (EP), this study successfully fabricated composites with enhanced radiation resistance. The results showed that the addition of h-BN improved the mechanical properties and glassy transition temperature of the resin, thereby enhancing the radiation resistance and reducing neutron transmittance of EP.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Materials Science, Multidisciplinary
S. Vignesh, J. T. Winowlin Jappes, S. Nagaveena, R. Krishna Sharma, M. Adam Khan, Chaitali V. More
Summary: This article focuses on the preparation of novel in-situ layered polymer composites for irradiation shielding applications. The distinct layers of B4C and PbO were formed in the epoxy matrix, creating a continuous interface. XRD and FTIR tests confirmed the presence of particle reinforcements and chemical stability in the prepared samples. The results of gamma irradiation shielding studies indicated that the composite material exhibited superior efficiency in shielding gamma irradiation at lower energy doses.
Article
Chemistry, Physical
H. Ogul, H. Polat, F. Akman, M. R. Kacal, K. Dilsiz, F. Bulut, O. Agar
Summary: The study investigates the gamma and neutron shielding capabilities of polyester composites reinforced with Boron and Tin nanopowders at different proportions. The results show that these composites could be alternative materials to the existing neutron shields in the literature, with the addition of Tin enhancing the gamma attenuation performance.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Seyit Ali Kara, Cevat Ozarpa, Ismail Esen, Hayrettin Ahlatci, Yunus Turen
Summary: This study produced powder metal matrix composite specimens using different reinforcement contents in AA7075 alloy and investigated their density and hardness properties. The results showed that the 20% B4C reinforced AA7075 sample had the best corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
S. Vignesh, J. T. Winowlin Jappes, S. Nagaveena, Krishna Sharma, M. Adam Khan
Summary: This study focuses on the preparation of B4C dispersed epoxy composites for irradiation shielding applications. Samples of different compositions were made and subjected to thermal characterization and irradiation attenuation studies. The results show that the thermal stability of the samples increased due to the intrinsic conductivity of the filler particles, while the shielding performance of the samples increased with an increased addition of B4C at lower energies due to photoelectric absorption.
Article
Materials Science, Ceramics
Boris Dyatkin, Matthew Laskoski, William K. Edelen, Syed B. Qadri, Teddy M. Keller
Summary: A novel polymer-derived synthesis method for boron carbide monoliths and metal-reinforced B4C cermets was reported. The method involves preceramic powder blend of boron and acetylenic resin, forming nanocrystalline matrices at low temperatures. The study evaluates optimal synthesis and reinforcement strategies for customized nanostructured materials in engineering applications.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Weiping Xuan, Yuchun Ji, Bingsai Liu, Shaofei Li, Wenzhuo Chen, Zhengdei Li, Jilin Wang, Guoyuan Zheng, Fei Long
Summary: This paper investigates the use of novel boron nitride micron tubes (BNMTs) to enhance commercial boron carbide (B4C) ceramics. The effects of sintering parameters and BNMTs content on the microstructure and mechanical properties are studied. Results show that adding a proper amount of BNMTs can inhibit grain growth and improve fracture toughness. The best mechanical properties are achieved with 5 wt% BNMTs at 1850 degrees C, 8 min, and 30 MPa.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Nuclear Science & Technology
Amine Hajji, Christine Coquelet-Pascal, Patrick Blaise
Summary: The JANUS experiments in the 90's studied deep neutron propagation in different materials and provided valuable experimental data for improving nuclear data for fast reactor applications. The results indicate that the nuclear data for iron, sodium, and some isotopes in stainless steel need to be improved for better accuracy.
ANNALS OF NUCLEAR ENERGY
(2021)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)