Article
Engineering, Chemical
Shiya Qiao, Jingling Yan, Zhen Wang, Yan Wang, Junrong Yu, Zuming Hu
Summary: With the increasing severity of health problems caused by air pollution, there is a growing demand for high-quality air filtration aerogel materials. This study successfully prepared composite nanofibrous aerogels with clear hierarchical porous structures by introducing cellulose nanofibers (CNF) into a polyimide nanofiber (PINF) system using self-assembly and freeze-drying technology. The resulting aerogels exhibited an extremely low density, a hierarchical porous structure, high filtration efficiency (99.69% for PM0.3), and a low pressure drop (230 Pa), making them promising air filtration materials for applications in more complex environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Chunfei Lv, Xiaojun Ma
Summary: In this study, carbon aerogels with hierarchical porous structure were successfully prepared by adjusting the content of hexamethylenetetramine (HMTA). The best carbon aerogels exhibited a uniform coral pore structure and showed excellent electrochemical performance.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Nguyen Van Hoa, Pham Anh Dat, Nguyen Van Chi, Le Hong Quan
Summary: A three-dimensional reduced graphene oxide/nickel-cobalt sulfide aerogel with high porosity and conductivity was successfully fabricated using a one-step hydrothermal method. This aerogel demonstrated excellent performance as an active electrode material for supercapacitors, showing great potential for energy storage applications.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Chemistry, Multidisciplinary
Hemraj M. Yadav, Jong Deok Park, Hyeong Cheol Kang, Jeonghun Kim, Jae-Joon Lee
Summary: A composite material consisting of cellulose nanofiber and cobalt-containing zeolite framework was prepared and showed superior electrochemical performance suitable for supercapacitor applications. The cellulose-based material has promising potential for developing electrodes for energy storage applications.
Article
Chemistry, Physical
Jingui Ai, Shuhua Yang, Yana Sun, Mei Liu, Le Zhang, Degang Zhao, Jieqiang Wang, Chao Yang, Xiutong Wang, Bingqiang Cao
Summary: Hierarchical porous carbon derived from corncob cellulose has been successfully fabricated, showing excellent specific surface area and pore size distribution. It exhibits high specific capacitance and outstanding rate capability, as well as good cycling stability after 20,000 cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Shuhua Yang, Yanwei Cui, Guangxu Yang, Songfang Zhao, Jieqiang Wang, Degang Zhao, Chao Yang, Xiutong Wang, Bingqiang Cao
Summary: In this study, a hierarchical porous carbon induced by ZnCl2 from corncob cellulose is developed through a single-step activation process. The material exhibits suitable micropores for high energy storage and sufficient mesopores for high-rate performance, thereby improving the performance of zinc-ion hybrid supercapacitors. The optimized hierarchical porous carbon shows high specific capacity, high energy density, and good cycling stability. The assembled quasi-solid-state flexible hybrid supercapacitor also demonstrates high specific capacity, satisfactory mechanical properties, and promising application prospects.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Debendra Acharya, Ishwor Pathak, Bipeen Dahal, Prakash Chandra Lohani, Roshan Mangal Bhattarai, Alagan Muthurasu, Taewoo Kim, Tae Hoon Ko, Kisan Chhetri, Hak Yong Kim
Summary: The combination of bimetallic oxide nanomaterials and porous carbon materials has significantly contributed to the development of high-performance energy storage devices. Researchers have successfully synthesized porous multimetal nanomaterials using a self-templated metal-organic framework strategy, resulting in excellent electrochemical performance in supercapacitors.
Article
Agricultural Engineering
Weihua Zhang, Luyao Wang, Ermei Makila, Stefan Willfor, Chunlin Xu
Summary: In this study, a novel ultralight aerogel-based adsorbent with a highly porous structure and good mechanical integrity was developed. It showed excellent water stability, fast shape recovery, and ultra-fast water transport. Additionally, the adsorbent exhibited excellent selective adsorption and separation performance. This research provides a new strategy for the development of low-cost and highly efficient adsorbents for wastewater treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Materials Science, Paper & Wood
Wanyao Meng, Sijie Wang, Haifeng Lv, Zhenxing Wang, Xuewen Han, Zijing Zhou, Junwen Pu
Summary: A novel biobased porous aerogel, synthesized through physical mixing, freeze-drying, and in-situ growth methods, was found to have enhanced water stability and high adsorption capacity for copper(II) oxide. This aerogel, formed by grafting zeolitic imidazolate frameworks-8 (ZIF-8) onto a CS/CNF solid composite, has a specific surface area of 206 m(2)/g and shows conformity to pseudo-second-order kinetics and the Langmuir isotherm model. Additionally, the aerogel is easy to fabricate and biodegradable, making it a promising candidate for wastewater treatment.
Article
Environmental Sciences
Zhenzhen Li, Lingjie Yu, Haodong Ma, Jianglong Chen, Jiaguang Meng, Yongzhen Wang, Yaming Liu, Qingwen Song, Zijing Dong, Menghe Miao, Bo Li, Chao Zhi
Summary: This study proposes a method for efficiently using waste cotton to purify water and provides novel ideas for the high-value use of other waste fibers to further mitigate ongoing environmental degradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Energy & Fuels
Yan Bai, Weiwei Zhao, Shuaihang Bi, Shujuan Liu, Wei Huang, Qiang Zhao
Summary: Cellulose gel is an ideal material for flexible supercapacitors due to its characteristics, and it holds great potential for development in the field of energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Yu Chen, Yang Hu, Jisi Chen, Yao Lu, Zhenghui Zhao, Abdul Rehman Akbar, Quanling Yang, Zhuqun Shi, Chuanxi Xiong
Summary: Carbon nanofibrils (CTOCN) /Manganese dioxide (MnO2) composite aerogels with 20.8 wt% MnO2 content exhibited outstanding electrochemical performance, serving as a promising electrode material for supercapacitors. The composite delivered a maximum specific capacitance of 171.1 F g(-1) at 0.5 A g(-1) and maintained 98.4% of the initial value after 5000 cycles at 3 A g(-1), showcasing excellent cycle life and energy density.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Xia Feng, Mengjiao Xu, Nannan Guo, Rui Ma, Lihua Yan, Leiming Cai, Dianzeng Jia, Lili Ai, Luxiang Wang
Summary: A dual-salt-induced activation strategy was developed to obtain a porous carbon sheet with ultrahigh specific surface area, desirable mesopore volume, nanosheet morphology, and high surface O and S content. The optimal sample exhibited high specific capacitance and excellent rate performance as a supercapacitor electrode. Furthermore, the assembled zinc-ion hybrid supercapacitor showed superior reversible capacity and highly stable cycling.
Article
Materials Science, Ceramics
Hong Ma, Zhongguo Wang, Xiong-Fei Zhang, Jianfeng Yao
Summary: By integrating bimetallic CoZn-MOF into bacterial cellulose (BC) networks through an in situ growth approach, a highly porous, lightweight, conductive, compressible, and hydrophobic aerogel was obtained. The aerogel exhibited excellent electromagnetic wave absorption and shielding effectiveness, as well as efficient electrothermal response. It also displayed high sensitivity for strain monitoring and various human movements when processed into a sensitive sensor.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Multidisciplinary
Shaoyi Lyu, Huanjun Chang, Longfei Zhang, Siqun Wang, Shanming Li, Yun Lu, Shujun Li
Summary: Transition metal carbonitrides (MXene) have gained attention in the supercapacitor field due to their two-dimensional layered structure. However, their performance is affected by self-stacking. To address this issue, researchers used one-dimensional cellulose nanofibers (CNF) and carboxylic single-walled carbon nanotubes (SWCNT) to intercalate MXene, resulting in well-dispersed MXene/SWCNT/CNF aqueous suspensions and hybrid hydrogels. These hydrogels were then transformed into hybrid aerogels through supercritical drying. The CNF provided excellent porosity, high specific surface area (301.03 m2 g-1), good electrolyte infiltration, and mechanical flexibility, while the SWCNT contributed to high conductivity in the aerogel film. The researchers successfully assembled a symmetrical all-solid-state flexible supercapacitor and interdigitated micro-supercapacitors using the aerogel film as a flexible electrode, achieving area specific capacities of 746.68 mF cm-2 and 244.50 mF cm-2, respectively. This study presents a fabrication method for polymer-inorganic hybrid nanocomposite aerogel film electrodes for flexible supercapacitors.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)