ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Liangbo Xie,Xueyue Mi,Yigang Liu,Yi Li,Yan Sun,Sihui Zhan,Wenping Hu
Polyacrylamide (PAM) in environmental water has become a major problem in water pollution management due to its high molecular mass, corrosion resistance, high viscosity, and nonabsorption by soil. The composite of Fe-doped Ce0.75Zr0.25O2 solid solution (Fe-Ce0.75Zr0.25O2) loaded on carbon felt (CF) was fabricated by a hydrothermal synthesis method, which was used as the cathode in a heterogeneous electro-Fenton system for the degradation of PAM. It showed that the degradation efficiency of PAM by the Fe-Ce0.75Zr0.25O2/CF cathode was 86% after 120 min and the molecular mass of PAM decreased by more than 90% after 300 min. Total organic carbon removal reached 78.86% in the presence of Fe-Ce0.75Zr0.25O2/CF, while the value was only 38.01% in the absence of Fe-Ce0.75Zr0.25O2. Further studies showed that the breaking of the chain begins with the amide bond, and then, the carbon chain was cracked into a short alkyl chain. As degradation progressed, both the complex viscosity and elasticity modulus of PAM solutions decreased nearly 50% at 300 min. It indicated that •OH were the most significant active species for the degradation of PAM. This novel Fe-Ce0.75Zr0.25O2/CF composite is an efficient and promising electrode for the removal of PAM in wastewater.
研究领域:
环境科学
·
水处理工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS TODAY
·
2019
·
IF 4.888
Xiaohui Liu,Liangbo Xie,Yigang Liu,Peng Zhao,Yugui Han,Shanshan Cheng,Xiaoyu Bai,Yi Li
Herein, an excellent cathode of ZnO-CeO 2 /CF was fabricated successfully via one-step electro-deposition method for the degradation of ciprofloxacin (CIP) in sewage by electro-Fenton (EF) technology. The detailed characterizations of ZnO-CeO 2 /CF material were conducted by SEM, XRD, XPS, CV and EIS. Effects of deposition time, initial pH and voltage value on degradation performance of ZnO-CeO 2 /CF were investigated systematically. The results showed nearly 100% degradation efficiency was easily obtained at 2 h owing to the large specific surface area of cathode, the good oxygen storage ability and Fenton-like performance of ZnO-CeO 2 . It was worth to mention that the favorable capability still existed in cathode body after 10 consecutive runs. Moreover, electron paramagnetic resonance (EPR) test and sacrificial agent experiments revealed that the increase of active substance accelerated the degradation efficiency of CIP during the process of valence state transition of Ce 3+ /Ce 4+ or Fe 2+ /Fe 3+ .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Huan Yang,Cheng Fang,Hongliang Xu,Xia Zhang,Yang Liu,Jiayin Zhao,Anzhe Wang,Hongxia Lu,Hailong Wang
Controlled shrinkage of hydrothermal carbon coating (HTCC) during its carbonization preparation process offers a novel strategy for optimizing the interfacial properties of fiber-reinforced ceramic matrix materials. In this study, the effect of volumetric shrinkage in monolayer or bilayer HTCC on the interface characteristics and mechanical properties of C f /ZrB 2 -SiC composites is investigated. The bilayer HTCC significantly enhances the crack deflection effect within the interphase compared to the monolayer HTCC. By precisely controlling the shrinkage of the layers of the bilayer HTCC, an innovative C/SiC/C trilayer interphase was synthesized in situ during the polymer infiltration process for preparing the C f /ZrB 2 -SiC composites, which synergistically enhances stress dispersion and load transfer efficiency within the interface. The work of fracture for C f /ZrB 2 -SiC composites modified by the trilayer interphase has been significantly elevated to 2258 J/m 2 , which far exceeds the 129 J/m 2 measured for the composites lacking a HTCC interphase.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Jingsheng Yu,Bo Zhang,Wei Jin,Wei Ji,Renxin Xu
This study demonstrates effective resistance welding between 7075 aluminum (Al) alloy and carbon fiber/polyether ether ketone (CF/PEEK) composites by combining chemical etching and silanization surface treatments with a polyetherimide (PEI) thermoplastic layer. The effects of this hybrid treatment on the bonding at the 7075 Al alloy/PEI thermoplastic layer interface and the mechanical performance of the welded joints are systematically investigated. Chemical etching created a micro-nano rough surface that enhanced mechanical interlocking and increased hydroxyl group content from 12.7 mol% to 28.5 mol%. Subsequent silanization grafted amino ( NH 2 ) groups onto the 7075 Al alloy surface, enabling hydrogen bonding with the PEI thermoplastic layer. Under the synergistic effects of mechanical interlocking and hydrogen bonding, interfacial bonding is significantly enhanced, increasing the lap shear strength (LSS) of the joint from 0.2 to 24.6 MPa. The fracture failure mode of the welded joint changes from the interfacial failure of the 7075 Al alloy and PEI thermoplastic layer to the interlaminar failure of carbon fiber tearing in the heating element. Summary A new approach enables effective resistance welding of 7075 Al alloy and CF/PEEK composites. A hybrid surface treatment enhances 7075 Al alloy bonding with PEI thermoplastic layer. The hybrid surface treatment induces mechanical interlocking and hydrogen bonding effects. The synergistic effects can significantly enhance the performance of welded joints.
研究领域:
材料科学
·
机械工程
·
连接技术
·
复合材料
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Advanced Ceramics
·
2021
·Vol. 11
·期 1
·120-135
·
IF 6.707
Lyu Yang,Du Baihe,Chen Guiqing,Zhao Guangdong,Cheng Yuan,Zhou Shanbao,Lv Qingrong,Zhang Xinghong,Han Wenbo
To further improve the oxidation resistance of polymer derived ceramic (PDC) composites in harsh environments, C f /SiC/SiHfBOC composites were prepared by chemical vapor infiltration (CVI) and precursor impregnation pyrolysis (PIP) methods. The weight retention change, mechanical properties, and microstructure of C f /SiC/SiHfBOC before and after oxidation in air were studied in details. Microscopic analyses showed that only the interface between the ceramics and fibers was oxidized to some extent, and hafnium had been enriched on the composite surface after oxidizing at different temperature. The main oxidation products of C f /SiC/SiHfBOC composites were HfO 2 and HfSiO 4 after oxidation at 1500 °C for 60 min. Moreover, the weight retention ratio and compressive strength of the C f /SiC/SiHfBOC composites are 83.97% and 23.88±3.11 MPa, respectively. It indicates that the C f /SiC/SiHfBOC composites should be promising to be used for a short time in the oxidation environment at 1500 °C.
研究领域:
材料科学
·
陶瓷材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Weiye Wang,Qingliang Zhao,Jing Ding,Kun Wang,Junqiu Jiang
Bio-electro-Fenton powered by microbial fuel cell (MFC-powered BEF) can in-situ generate and utilize hydrogen peroxide to degrade refractory pollutants. Most of the previous works loaded transition metal on the cathode to participate in the Fenton reaction showed limited electrical or degradation performance. The coupling of alkaline-earth metal (Mg 0 and MgO) and transition metal on cathode could improve the electrochemical and catalytic properties of MFC-powered BEF system, which had not been reported so far. In this research, a novel cathode of Fe–Mn–Mg/carbon fiber (Fe–Mn–Mg/CF) was developed with good polymerization effect of Mg to Fe and Mn, and outstanding production of reactive oxide species (•OH and •O 2 − ), which further improved the overall electricity generation efficiency and enhanced the degradation of pollutants. Accordingly, the maximum power density generated in MFC-powered BEF system with Fe–Mn–Mg/CF cathode was 2.07 times higher than that of the frequently used Fe–Mn/CF. Owing to the superiority of surface holes and MgO in H + adsorption and electron transfer , the integration of Fe, Mn with Mg promoted the in-situ generation of H 2 O 2 and active radicals, resulting in the highest catalytic performance of degrading refractory pollutants . Initial pH, external resistance, initial concentration of contaminant and cycle use frequency of cathode were also evaluated on the degradation efficiency of the BEF system. Furthermore, reaction and degradation mechanisms were proposed from H 2 O 2 production and free radical characterization. Overall, this study provided a novel cathode preparation approach for the MFC-powered BEF system, which vastly promoted its electrochemical and catalytic properties.
研究领域:
环境科学
·
电化学
·
催化材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Changhui Zhou,Jinhua Li,Yan Zhang,Jing Bai,Pengbo Wang,Bo Zhang,Lina Zha,Mingce Long,Baoxue Zhou
Sulfurous and nitrogenous oxides, including NO x and SO 2 , and the generated substances NO x - and SO 3 2- widely exist in air and water as pollutants and thus are difficult to control in the environment. In this study, we designed a novel photoelectrocatalytic (PEC) system for the efficient conversion of SO 2 and NO x in mixed gases and NO x - and SO 3 2- in wastewater to N 2 and SO 4 2- , respectively, by activating SO 3 2- to form SO 3 • - . The key ideas include the conversion of SO 3 2- from SO 2 and efficient activation of SO 3 2- into SO 3 • - and further conversion into SO 4 • - by the MoS 2 /Fe 2 O 3 photoanode. Simultaneously, NO 3 - /NO 2 - originating from NO x was rapidly reduced to NH 4 + on the CuNW@CF cathode. Ultimately, the generated NH 4 + was selectively oxidized to N 2 by SO 4 • - and SO 4 • - was reduced to SO 4 2- . The results indicated that 99.9 % of TN was removed and 100 % of SO 3 2- was converted to harmless SO 4 2- . This study provides new insights into the treatment of sulfurous and nitrogenous oxides in air and water.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Liyun Cao,Zhe Bai,Jianfeng Huang,Haibo OuYang,Jianpeng Wu
The effects of hydrothermal penetration temperature on the ablation properties of C f /C-SiC-MoSi 2 composites were studied. With the hydrothermal temperature rising, the distribution depth of ceramics along the cross-section of the composites increased. Meanwhile, the increase in densities and the decrease in porosities of the composites were achieved. When the penetration temperature reached 200 °C, the composites showed the best ablation properties after plasma ablation test for 60 s at 2300 °C. The mass ablation rate was 2.28 mg cm −2 s −1 , which decreased by 65%, 54% and 29% compared to composites prepared at 140 °C, 160 °C and 180 °C, respectively. Also the sample prepared at 200 °C showed the lowest linear ablation rate. The increasing depth and amount of ceramics in the composites could provided SiC and MoSi 2 continuously to prevent the oxidation of carbon, rather than be easily blown away by strong scouring force. The good ablation behavior is attributed to the higher density and amounts of ceramics, the generation of SiO 2 and MoO 2 .
研究领域:
材料科学
·
复合材料
·
热防护系统
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yang Hu,Dewei Ni,Bowen Chen,Feiyan Cai,Chunjing Liao,Yusheng Ding,Shaoming Dong
Electromagnetic interference (EMI) shielding materials with excellent load-bearing and high-temperature resistance have attracted much attention for both civil and military applications. In this regard, mechanically robust (bending strength of 246 ± 15 MPa) C f @BN/(CrZrHfNbTa)C–SiC high-entropy ceramic matrix composite with BN interphase was designed and fabricated in this work for highly EMI shielding performance and high-temperature resistance. As a result of the synergistic effect of multi-components, mean total EMI shielding efficiency (SE T ) of the composite with 3 mm thickness is up to 32.5 dB (higher than 99.9 % EMI shielding) in Ku-band. This indicates that thickness of the BN interphase has a remarkable effect on EMI shielding performance, indicating that the absorption coefficient ( A ) increases gradually with increasing BN thickness. The EMI shielding performance exhibit excellent high-temperature stability in an oxidation environment. Even after multiple high temperature oxidations in the temperature range of 400–800 °C, the composite remains outstanding EMI shielding performance. This study provides a structural and functional integrated EMI shielding material with a potential long service life at high temperatures.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Kailei Xu,Yumin An,Zanchao Gao,Yehong Cheng,Libin Zhao
A method combining low-temperature demolding with precursor infiltration and pyrolysis (PIP) for preparing C f /SiC-ZrB 2 ceramic composites with bouligand structure is proposed. First, C f /SiC-ZrB 2 -PCS ceramic films were prepared using polycarbosilane (PCS), carbon fiber, and SiC-ZrB 2 ceramic particles through liquid nitrogen demolding technology. Then, C f /SiC-ZrB 2 green body with bouligand structure was achieved by helically assembled and pre-crosslinked C f /SiC-ZrB 2 -PCS ceramic films at a fixed angle. Finally, precursor infiltration and pyrolysis method was employed to densify the C f /SiC-ZrB 2 ceramic composites with bouligand structure using PCS. The mechanical properties of the composites with different carbon fiber contents were investigated, revealing that at a carbon fiber content of 30%, the composites exhibited a flexural strength of 358.9 MPa, a fracture toughness of 10.4 MPa·m 1/2 , and a work of fracture of 2445.4 J·m -2 . The toughening mechanism of C f /SiC-ZrB 2 ceramic composites with bouligand structure was elucidated through two-dimensional crack propagation analysis via scanning electron microscopy (SEM) with three-dimensional fracture network reconstruction using synchrotron X-ray computed tomography (CT).
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Yongsheng Liu,Guoxin Wei,Yawen Ma,Pengcheng Ma,Jianyong Tu,Jingxin Li,Yansong Liu,Shaolin Fu,Yejie Cao,Jian Chen,Yu Pan
In response to the urgent demand for ablation resistance and cost-effective thermal protection materials for hypersonic vehicles, this study employed a combined process of slurry injection and reactive melt infiltration to rapidly fabricate C f /ZrB 2 ‒SiC composites. The effects of infiltration temperature (1450°C‒1600°C) and holding time (0.5‒2.0 h) on the microstructure and mechanical properties were systematically investigated. Results demonstrate that at 1500°C, the competition mechanism between molten Si viscosity and reaction rate was balanced, achieving efficient pore filling. Composites processed at 1500°C for 1 h exhibited optimal mechanical properties, with a flexural strength of 234.08 MPa. As the holding time increased, elemental homogeneity improved in the matrix while mechanical properties decreased. The oxyacetylene ablation test (4.18 MW/m 2 ) showed: at 100 s, a dense ZrO 2 ‒SiO 2 oxide layer formed, resulting in ablation rates of 0.32 mg/s and 0.70 µm/s. After 300 s, thermal stress caused oxide layer spallation, elevating rates to 2.90 mg/s and 4.50 µm/s, triggering a new ablation cycle. The material demonstrates exceptional ablation resistance. This process provides a valuable reference for the low-cost fabrication of high-performance ultra-high temperature ceramic matrix composites.
研究领域:
材料科学
·
陶瓷基复合材料
·
航空航天工程
·
高温材料
·
制备工艺
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITE STRUCTURES
·
2025
·
IF 7.1
He Ou-Yang,Xuanyu Zhou,Yulong Zhang,Yan Wang,Ziqiang Zhu,Jianan Bai,Wei jiang,Yanan Zhang,Yubing Hu
The interfacial properties between the components of a composite material influence the overall material properties. Herein, we proposed a “rigid-flexible” approach to improve the relatively weak interlaminar characteristic of 3D printed CF/PLA composite. Graphene oxide (GO) and polyethyleneimine (PEI) were chosen as the “rigid” and “flexible” phases, respectively. A stepwise chemical grafting technique was used to introduce “rigid-flexible” structures to the continuous carbon fiber (CCF) surface. Subsequently, filaments were prepared using modified CF and polylactic acid (PLA) and samples were obtained by FDM process. The CF-PEI-GO/PLA composites exhibited remarkable enhancements in mechanical performance relative to neat CF/PLA. Specifically, their interfacial shear strength (IFSS) doubled (101.64% increase), while impact resistance surged by 74.50%. Additionally, tensile strength and flexural strength showed substantial improvements of 31.17% and 24.86%, respectively. The interfacial enhancement mechanism was analyzed through a variety of characterization techniques such as SEM, AFM, XPS and Raman. This research offered new insights and methods towards the development of engineering materials for high performance 3d printing.
研究领域:
材料科学
·
复合材料
·
3D打印技术
·
高分子科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）