SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Ze Lin,Xiulan Weng,Nasreen Islam Khan,Gary Owens,Zuliang Chen
The annual influx of antimony (Sb) into the environment due to the widespread use of Sb compounds in industry and agriculture has become of global concern. Herein, a functional nanomaterial composite based on loading bimetallic iron/nickel nanoparticles on reduced graphene oxide (rGO-Fe/Ni) was initially prepared in a one-step phytogenic synthesis using a green tea extract. Subsequently, when applied for Sb(III) removal, the removal efficiency of rGO-Fe/Ni reached 69.7% within 3 h at an initial Sb concentration of 1.0 mg·L −1 . Advanced materials characterization via scanning electron microscopy-energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy revealed that Sb(III) was initially adsorbed onto the surface of rGO and then oxidized to Sb(V). This result was also supported by adsorption isotherm, kinetics, and thermodynamic analysis. These studies revealed that the adsorption was spontaneous and endothermic, following a Langmuir adsorption model with pseudo-second-order kinetics and allowed a Sb(III) removal mechanism based on adsorption and catalytic oxidation to be proposed. Furthermore, when rGO-Fe/Ni was practically used to remove Sb(III) in groundwater a 95.7% removal efficiency was obtained at 1 mg·L −1 Sb(III), thus successfully demonstrating that rGO-Fe/Ni has significant potential for the practical remediation of Sb contaminated groundwater.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 27
·34503-34512
·
IF 3.056
Huang Kai,Bian Hao,Zhang Meng,Zhan Cong,Li Can,Zhang Wei,Cui Changzheng,Lu Qiang,Lin Kuangfei,Zhao Jianhua
The iron and nickel bimetallic nanoparticles supported by the block copolymer polystyrene- block -poly (acrylic acid) (PS-b-PAA-nZVI-Ni) were synthesized successfully and were applied to assess the degradation of 1,1,1-trichloroethane (1,1,1-TCA) in water. An optimal dose of Ni loading was 2 wt%, while an optimal mass ratio of PS-b-PAA to Ni/Fe, i.e., 0.5:1, at which the dechlorination efficiency was a maximum. The size of PS-b-PAA-nZVI-Ni nanoparticles (average size ~ 50 nm) was three times smaller than that of nZVI-Ni due to the prevention of agglomeration of the resultant zerovalent iron nanoparticles by PS-b-PAA. In the applying aspect, the pseudo-first-order rate constant ( K obs ) of 1,1,1-TCA removal by PS-b-PAA-nZVI-Ni was 0.0142 min −1 within 240 min, which was approximately five times higher than nZVI. Meanwhile, PS-b-PAA-supported nZVI-Ni nanoparticles penetrated much deeper in quartz sand columns than nZVI-Ni nanoparticles, indicating PS-b-PAA had significant influence on nZVI transport. The findings from this study suggested that PS-b-PAA-nZVI-Ni, with its high reactivity, selective screening for 1,1,1-TCA, could be one significant potential for use as remedial agent to treat chlorinated solvents in water.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 34
·期 8
·085401
·
IF 3.953
Hongna Jia,Yao Wang,Shuya Zhao,Haipeng Wang,Na Ju,Xinyue Zhang,Hong Li,Zejun Sun,Hong-bin Sun
Carbon materials derived from metal-organic frameworks have attracted increasing attention as anodes for energy storage. In this study, Fe, Ni-doped ZIF-8 is carbonized at high temperature to obtain bimetallic Fe and Ni modified tension -relaxed carbon (FeNi@trC). Fe and Ni have opposite structural modification effects when the metal ions are doped into the ZIF-8 dodecahedron. The obtained carbon material maintains the regular dodecahedron morphology, which means the relaxation of tension and strong thermal stability during annealing. Moreover, the presence of nickel enhances the carbonization degree and electrochemical stability of FeNi@trC, while the calcination of the tensive ZIF-8 precursor offers more defect sites. The discharge capacities of FeNi@trC materials are stable at 182.9 mAh·g−1 and 567.9 mAh·g−1 for sodium-ion batterie (SIB) and lithium-ion batterie (LIB) at 0.05 A·g−1. Compared with the current density of 0.05 A·g−1, the discharge capacity of SIB and LIB attenuates by 29.4% and 55.9% at 1 A·g−1, respectively, and the FeNi@trC shows good performance stability in the following cycles.
研究领域:
材料科学
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能源存储
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·Vol. 45
·期 20
·11802-11813
·
IF 4.939
Ping Li,Qiyu Yang,Han Zhang,Mingxuan Yao,Fei Yan,Dong Fu
Fe-, Ni- and Zn- doped La 0·9 Sr 0·1 CoO 3 are prepared and a single-component solid oxide fuel cell composed of 30 wt% perovskite oxide and 70 wt% samarium-doped ceria (SDC)-(Li 0·67 Na 0.33 ) 2 CO 3 is fabricated and characterized. When doping with either Fe, Ni or Zn, most cations occupy the Co 3+ sites. X-ray photoelectron spectroscopy and oxygen temperature-programmed desorption characterizations show that Zn-doped La 0·9 Sr 0·1 CoO 3 exhibits notably high surface oxygen, causing higher catalytic activity for oxygen reduction reaction (ORR) than that of nondoped La 0·9 Sr 0·1 CoO 3 . Fe or Ni doping into La 0·9 Sr 0·1 CoO 3 decreases surface oxygen, resulting in a lower catalytic activity toward ORR than La 0·9 Sr 0·1 CoO 3 . Furthermore, X-ray diffraction, temperature-programmed reduction and transmission electron microscopy characterizations prove that after reduction, Fe-doped La 0·9 Sr 0·1 CoO 3 is reduced to Co 0·72 Fe 0.28 alloy-oxide core-shell nanoparticles , resulting in a high catalytic activity for hydrogen oxygen reaction (HOR). However, NiCo 2 O 4 are formed during the reduction of Ni-doped La 0·9 Sr 0·1 CoO 3 , exhibiting a low catalytic activity for the HOR. Similarly, the low catalytic activity of reduced Zn-doped La 0·9 Sr 0·1 CoO 3 for the HOR is caused by the formation of ZnCo 2 O 4 . A single component fuel cell composed with Fe-doped La 0·9 Sr 0·1 CoO 3 -SDC-(Li 0·67 Na 0.33 ) 2 CO 3 exhibits the highest P max of 239.1 mW cm −2 at 700 °C with H 2 as fuel, indicating that HOR processes are rate-determining steps.
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DOI
高影响因子
JOM
·
2026
·
IF 2.3
Zhang Jie,Liu Aimin,Zhao Yuan,Ao Xianze,Shi Zhongning
To address the urgent need for metal and oxygen extraction in lunar in-situ resource utilization (ISRU), this study investigates electrowinning of metals and oxygen production using NaF-AlF 3 as the solvent, highland-type simulated lunar regolith (NEU-2) as the solute, a 43Fe-57Ni alloy as the anode, and graphite as the cathode, within the temperature range of 1223–1243 K. The results show that increasing the temperature from 1223 K to 1243 K reduces the cell voltage from 4.96 V to 4.80 V. The cathode product is an Al-Si-Fe alloy, in which the aluminum content first decreases and then increases with rising temperature, while silicon exhibits the opposite trend. Under the optimized condition of 1233 K, the oxygen generation rate reaches 3.22 g/h, with an oxygen yield of 16.1%, while the anode current efficiency is 80.19%. The cathode alloy composition is 54.21% Al–28.7% Si–17.09% Fe, with a cathode current efficiency of 47.70% and a Vickers hardness of 59.4 HV; the anode passivation layer remains intact under this condition. This work provides theoretical and data-based support for optimizing key process parameters in molten-salt electrolysis of lunar regolith for oxygen production.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Yaqi Wu,Jianhua Qian,Jinjuan Xing,Junhua Li,He Huang,Yanan Wang,Xueming Kang,Lijuan Wang,Jiasheng Xu
Volatile organic compounds (VOCs), as hazardous environmental pollutants emitted from chemical industries, cause significant threats to human health and ecological environment owing to their inherent toxicity and carcinogenicity. Catalytic oxidation has emerged as a promising technology for VOC elimination, enabling complete degradation of pollutants into CO 2 and H 2 O. This study investigates transition metal oxide (TMO x , TM = Mn, Co, Fe, Ni, Cu, Zn)/TiO 2 catalysts for toluene degradation. Since the catalytic efficacy of TiO 2 -based catalysts critically depends on the quantity of surface oxygen vacancy (O v ) in heterogeneous processes, we engineered O v -rich interfaces by breaking atomic periodicity arrangements and generating unsaturated coordination sites. These structural modifications enhanced oxygen migration rates and increased reactive oxygen species availability. Among the synthesized catalysts, CuO/TiO 2 exhibited the highest performance, achieving 90 % toluene conversion (T 90 ) at 286 °C under a weight hourly space velocity (WHSV) of 20,000 mL/(g·h) with an initial toluene concentration of 1000 ppm. The measurement of in-situ DRIFTS suggested that toluene oxidation process abided by the path of toluene → benzaldehyde → benzoic acid → anhydride →CO 2 and H 2 O. Furthermore, the by CuO/TiO 2 catalyst demonstrated great reusability, and long-term stability, highlighting its potential for industrial-scale VOC abatement applications.
研究领域:
环境科学
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催化
·
材料科学
·
化学工程
·
污染控制
·
表面化学
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产品关联
DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Junhong Liu,Zhitao Liu,Jing Yang,Bin Xu,Feiyun Chen,Xin Liao
The incorporation of nanomaterials generated from Prussian blue (PB) derivatives has emerged as a promising strategy to significantly improve the properties of energetic materials. In this study, we comprehensively investigated the influence of nanomaterials derived from PB on the thermal decomposition characteristics of energetic materials. To achieve this goal, we prepared nanomaterials using coprecipitation and heat treatment methods with PB derivatives as catalysts. Advanced techniques such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller (BET) analysis for specific surface area and pore size, and X-ray photoelectron spectroscopy were employed to thoroughly characterize these nanomaterials. Differential scanning calorimetry was used to assess the thermal behavior of nitrocellulose (NC), and the relevant kinetic parameters were determined through thermal decomposition kinetics calculations and analysis. This work revealed the influence of catalysts on the NC decomposition process and provided comprehensive insights into the effect of integrating nanomaterials derived from PB derivatives on the thermal decomposition performance of NC. The results of this work demonstrated the possibility of using nanomaterials generated from PB derivatives as effective catalysts to enhance the thermal decomposition characteristics of NC, offering interesting opportunities for their application in the field of high-energy materials.
研究领域:
材料科学
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化学工程
·
能源材料
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Zhangqiao Zhou,Meiqi Wen,Qi Li,Ruilin Zhou,Xian Wang
Coatings play a crucial role in minimizing eddy current loss in soft magnetic composites (SMCs). The powder atomic layer deposition (PALD) technique was utilized to coat Fe–Ni–Mo soft magnetic powder in this study. The Al 2 O 3 coating fabricated via PALD enhanced corrosion resistance and reduced core loss in SMCs. Additional deposition cycles increased the resistivity of the Fe–Ni–Mo powder and the corrosion resistance of the Fe–Ni–Mo SMCs, indicating that the density and integrity of the amorphous Al 2 O 3 coating were enhanced. Thinner coatings (20 cycles) exhibited anodic passivation in corrosion, which was attributed to insufficient density. Nevertheless, an excessively thick coating (100 cycles) resulted in a decrease in effective permeability and an increase in hysteresis loss. The fabricated Fe–Ni–Mo SMCs (50 cycles) demonstrated a core loss of 603.1 mW/cm 3 at 100 kHz/100 mT, coupled with an effective permeability of 108.5 and a Q value of 97.8 at 100 kHz.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Jie Sun,Weiqi Gao,Honghan Fei,Guohua Zhao
Selective electrocatalytic conversion of NO 3 – to N 2 is an environmental-friendly strategy to close the anthropogenic nitrogen-based cycle. This work reported a metal-organic framework-derived electrocatalyst with earth-abundant bimetallic sites, showing quantitative (~97.9% conversion) and selective (~99.3%) nitrate-to-N 2 transformation. More importantly, both post-catalysis concentrations of NO 3 – and NO 2 – meet the drinking water limit requirements, set by World Health Organization. The reaction intermediates and mechanistic pathways in electrocatalytic reduction of NO 3 – to N 2 are elucidated by a variety of in-situ experimental studies and DFT calculations. The enhanced and selective electrocatalytic performances are ascribed to the relay catalytic effects of the neighboring Fe-Ni catalytic sites residing in the porous carbon electrocatalysts, which are structurally determined by X-ray absorption spectroscopy (XAS) as well as calculated structural model, with Fe sites decreasing the reaction barrier for NO 3 – conversion and Ni centers facilitating the adsorption and activation of reaction intermediates (NO 2 – , NO* and N 2 O*).
研究领域:
环境科学
·
材料科学
·
电化学
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产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2023
·Vol. 148
·期 13
·6013-6026
·
IF 4.4
Hu Yinghui,Wang Xuwen,Hao Jingwei,Jiang Shouhang,Zhang Jian,Yang Yulin,Lin Kaifeng,Zheng Jian,Shuai Yong
The excellent thermal decomposition efficiency of ammonium perchlorate (AP) is of great importance for obtaining propellant with fast specific impulse. In this study, four CuM x O y catalysts, including M = Fe, Ni, Co, and Zn, were synthesized and then used for catalyzing AP decomposition and hydroxyl-terminated polybutadiene (HTPB)-based solid propellant combustion. The existed synergistic effect in CuM x O y catalysts improved the catalytic activity and the most active CuZnO catalyst decreased the AP high-temperature decomposition temperature (HTD) from 412.5 to 289.4 °C. Kinetic studies indicated that CuM x O y catalysts inhibited the conversion of N 2 O to a fully oxidized product and decreased the activation energy ( E a ) in HTD to concentrate AP decomposition to significantly decrease the heat loss, thereby increasing their decomposition efficiency. When applying the CuM x O y catalysts in the HTPB (hydroxyl-terminated polybutadiene)-based solid propellant, a faster burning rate and stronger optical emission spectrum were obtained. The CuM x O y catalyst is a potential additive for the preparation of outstanding combustion solid propellants. Graphical abstract
研究领域:
材料科学
·
推进剂化学
·
催化化学
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产品关联
DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2021
·Vol. 16
·期 4
·498-510
·
IF 4.204
Bo Jinxiao,Li Mei,Zhu Xinli,Ge Qingfeng,Han Jinyu,Wang Hua
The electrochemical conversion of CO 2 -H 2 O into CO-H 2 using renewable energy is a promising technique for clean syngas production. Low-cost electrocatalysts to produce tunable syngas with a potential-independent CO/H 2 ratio are highly desired. Herein, a series of N -doped carbon nanotubes encapsulating binary alloy nanoparticles (M x Ni-NCNT, M= Fe, Co) were successfully fabricated through the co-pyrolysis of mela-mine and metal precursors. The M x Ni-NCNT samples exhibited bamboo-like nanotubular structures with a large specific surface area and high degree of graphitization. Their electrocatalytic performance for syngas production can be tuned by changing the alloy compositions and modifying the electronic structure of the carbon nanotube through the encapsulated metal nanoparticles. Consequently, syngas with a wide range of CO/H 2 ratios, from 0.5:1 to 3.4:1, can be produced on M x Ni-NCNT. More importantly, stable CO/H 2 ratios of 2:1 and 1.5:1, corresponding to the ratio to produce biofuels by syngas fermentation, could be realized on Co 1 Ni-NCNT and Co 2 Ni-NCNT, respectively, over a potential window of −0.8 to −1.2 V versus the reversible hydrogen electrode. Our work provides an approach to develop low-cost and potential-independent electrocatalysts to effectively produce syngas with an adjustable CO/H 2 ratio from electrochemical CO 2 reduction.
研究领域:
材料科学
·
电化学
·
可再生能源
·
催化
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DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 16
·2884
·
IF 5.1
Yiqiong Yang,Juan Han,Cui Wang,Pingchuan Yang,Panchen Li,Xiaodong Zhang
MOF-derived catalysts have considerable potential for aqueous contaminant control, but their practical application is often constrained by the aggregation and difficult recovery of powder catalysts. In this study, a self-supportingN-doped Fe/Ni-based monolithic catalyst, denoted N-101-NFF, was fabricated through the in situ growth of an Fe-based MOF precursor on nickel–iron foam followed by pyrolysis. Under the conditions of 50 mg/L chlortetracycline (CTC), 0.08 mmol/L peroxymonosulfate (PMS), and an effective catalyst area of 1 cm2, N-101-NFF degraded 90.3% of CTC within 60 min and maintained a degradation efficiency of 88.6% after five consecutive cycles. Quenching experiments and EPR analysis indicated the involvement of •OH, SO4•−, O2•−, and1O2in CTC degradation. Electrochemical measurements indicated improved interfacial charge-transfer characteristics, while post-reaction XPS analysis revealed changes in the Fe and Ni valence states and surface N- and O-containing groups, supporting the involvement of Fe and Ni redox cycling and these surface functionalities in PMS activation. In a fixed-bed reactor, the system maintained more than 86% CTC removal over 24 h of continuous-flow operation at a CTC feed rate of 200 mL/h. These results highlight the potential of N-101-NFF as a recoverable monolithic catalyst for PMS-based treatment of antibiotic-contaminated water.
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高影响因子
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