Journal of Cleaner Production
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2022
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IF 11.072
Zhenzhen Jiang,Chi Ma,Yanqing He,Mingli Li,Gaoling Liu,Yafei Guo,Duo Ji,Tianlong Deng
To develop a green and efficient cesium adsorbent with high adsorption capacity , rapid kinetics, and good regeneration performance is a tremendous challenge. In this work, potassium iron antimony thiostannate (PIATS) synthesized by the hydrothermal method was utilized for green recovery cesium from geothermal water for the first time. PIATS showed a high adsorption capacity of 401.23 mg/g, which was much higher than other types of adsorbents at present. Meanwhile, PIATS showed rapid ion exchange kinetics (within 3 min) and broad pH resistance (4–12). More importantly, PIATS still showed excellent selectivity to cesium even in geothermal water containing many other coexisted ions ( K d = 1.96 × 10 4 mL/g), and the separation factors between Cs + and the coexisted competing ions were ranged from 462.77 to 963.76. Subsequently, the cesium-laden PIATS could be easily eluted with 0.50 mol/L NaNO 3 to achieve rapid desorption (within 10 min). The concentration of Cs + in the elution was enriched more than 11 times higher than that in the original solution. Furthermore, no organic solvents or other toxic reagents were involved during the whole process. Therefore, the adsorption advantages, excellent enrichment ability, and structural stability of PIATS make it a potential recyclable candidate for green cesium recovery from geothermal water.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Shaoping Chen,Yachao Wang,Yaning Wang,Wenhao Fan,Jingyun Guo,Jie Chen,Yu Jiang,Rasha Abdullah Ahmed Al-Yusufi,Zuhair A. Munir
In addition to the thermal and electrical characteristics of the thermoelectric material , the energy conversion efficiency of TE devices is influenced by other factors including the interface resistance, which in turn is affected by chemical changes or mechanical failure. We have investigated the use of FeTe as an electrode for iodine-doped PbTe. The telluride of iron has CTE and work function values that match well with those of PbTe. The FeTe/PbTe contact was determined as ohmic in nature with low resistance. Contact resistance and shear strength values were determined over aging times of up to 400 h at 573 K and were found to be nearly unchanged. In contrast, samples in which Fe was used as electrode showed significant decrease in shear strength and a significant increase in joint resistivity over the same aging conditions. From the electrical and thermal characterization, the conversion efficiency of the FeTe/Pb 1.0004 Te 0.997 I 0.003 /FeTe single leg was determined as 4.678% for T h = 673 K and T c = 300 K.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 29
·期 25
·37266-37276
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IF 5.19
Zhang Li,Lan Shuang,Dou Quanhao,Hao Shiwei,Wang Yueping,Peng Yongzhen
The zero-valent iron-anaerobic ammonium oxidation (ZVI-anammox) system has received widespread attention due to its excellent nitrogen removal performance and user-friendly operation. However, its disadvantages include a short service life, high ZVI consumption, and poor system stability. The use of ultrasound as a physical method is increasing in various water treatment processes. In this study, a series of batch tests were conducted to obtain the best ultrasonic parameter and explore the comprehensive effects of ultrasound on a ZVI-anammox system. The highest specific anammox activity of the ZVI-anammox system was found to be 2.88 mg total nitrogen/g of volatile suspended solids/h after ultrasonic treatment (0.2 w/mL, 5 min), which was 37.85% higher than a control group. Additionally, the service life of ZVI extended by 28.57% and the total nitrogen removal efficiency changed from 58.03–72.08 to 63.92–78.33% under ultrasonic irradiation. These phenomena were related to the mechanical force and cavitation of ultrasonic waves. Judging from the characteristics of sludge and ZVI, ultrasound can promote anammox sludge granulation, ease ZVI passivation, and enhance the stability of the entire system. This paper also briefly discusses the impact mechanisms of ultrasound on the ZVI-anammox system. In brief, ultrasound destroys the surface structure of ZVI and thus provides numerous attachment points for microorganisms that improve the performance of the entire system. The proposed ultrasound combined with ZVI is a novel method that has potential for use in large-scale engineering applications in actual sewage treatment after comprehensive analysis.
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PubMed
高影响因子
FUEL
·
2022
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IF 8.035
Xiayi Hu,Juntao Huang,Xinwei He,Qi Luo,Chao'en Li,Changbo Zhou,Rui Zhang
The challenge for the carbon dioxide (CO 2 ) capture by using amine solution is the huge energy cost in solvent regeneration process, this work combined the advantages of three conventional amines, monoethanolamine (MEA), 1-Dimethylamino-2-propanol (1DMA2P), and piperazine (PZ) to formulate an effective trio-amine blend to capture CO 2 , and the results demonstrate that the blends could reduce the energy consumption by 29.4–55.4%, increase the average desorption rate by 60–140%, and increase the cyclic capacity by 40–120%, relative to 5 M MEA solution. Through analysis the regeneration mechanism in detail, it is found that more proton provider in the trio-amine blends could help to reduce the energy consumption by lower the reaction activation energy in the deprotonation process of the protonated amines. Finally compared to the reported amine systems in considering of the energy cost, it is found that the MEA-1DMA2P-PZ could be a potential candidate for capturing CO 2 in industrial.
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APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Yi Peng,Ying Yan,Jing Wang,Ziyang Xiang,Yanmei Li,Junhui Yang,Jinglin Yin,Wenlei Wang,Hongbo Xiao
In this study, CdSe cluster-modified biogenic α − FeOOH based on macroporous biochar was constructed from rhizosphere iron plaque via pyrolysis. An ultrahigh H 2 O 2 production rate of 655.75 μmol/L was achieved by the photocatalysis-self-Fenton system within 30 min under visible light irradiation. α-FeOOH, with abundant iron ions, can directly activate H 2 O 2 to produce abundant ⋅OH radicals. It was found that As(III) (10 mg/L) could be completely degraded within 20 min. Electron spin resonance spectroscopy (ESR) and density functional theory (DFT) revealed that a suitable energy band structure was achieved by the introduction of CdSe clusters; thus, O 2 was mainly reduced to H 2 O 2 through a two-electron reduction route in the reaction system. The photogenerated electrons promoted the conversion of Fe(III)/Fe(II) by reacting with Fe(III) in α-FeOOH. The presence of H 2 O 2 and Fe 2+ in this system accelerates the oxidation of As(III) by a Fenton-like reaction.
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Nanomaterials
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2022
·Vol. 12
·期 4
·640
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IF 5.719
Lin Bo,Fujin Li,Yangbo Hou,Min Zuo,Degang Zhao
Forming co-alloying solid solutions has long been considered as an effective strategy for improving thermoelectric performance. Herein, the dense Cu2−x(MnFeNi)xSe (x= 0–0.09) with intrinsically low thermal conductivity was prepared by a melting-ball milling-hot pressing process. The influences of nanostructure and compositional gradient on the microstructure and thermoelectric properties of Cu2Se were evaluated. It was found that the thermal conductivity decreased from 1.54 Wm−1K−1to 0.64 Wm−1K−1at 300 K via the phonon scattering mechanisms caused by atomic disorder and nano defects. The maximumzTvalue for the Cu1.91(MnFeNi)0.09Se sample was 1.08 at 750 K, which was about 27% higher than that of a pristine sample.Keywords:thermoelectric material;nanostructured;interfacial engineering;multi-scale scattering centers
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-13
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IF 9.429
Tong Ting,Deng Shuangfei,Zhang Xiaotong,Fang Liurong,Liang Jiangong,Xiao Shaobo
Background The infection and spread of porcine reproductive and respiratory syndrome virus (PRRSV) pose a serious threat to the global pig industry, and inhibiting the viral infection process is a promising treatment strategy. Nanomaterials can interact with viruses and have attracted much attention due to their large specific surface area and unique physicochemical properties. Ferrous sulfide nanoparticles (FeS NPs) with the characteristics of high reactivity, large specific surface area, and low cost are widely applied to environmental remediation, catalysis, energy storage and medicine. However, there is no report on the application of FeS NPs in the antiviral field. In this study, gelatin stabilized FeS nanoparticles (Gel-FeS NPs) were large-scale synthesized rapidly by the one-pot method of co-precipitation of Fe 2+ and S 2‒ . Results The prepared Gel-FeS NPs exhibited good stability and dispersibility with an average diameter of 47.3 nm. Additionally, they were characterized with good biocompatibility and high antiviral activity against PRRSV proliferation in the stages of adsorption, invasion, and replication. Conclusions We reported for the first time the virucidal and antiviral activity of Gel-FeS NPs. The synthesized Gel-FeS NPs exhibited good dispersibility and biocompatibility as well as effective inhibition on PRRSV proliferation. Moreover, the Fe 2+ released from degraded Gel-FeS NPs still displayed an antiviral effect, demonstrating the advantage of Gel-FeS NPs as an antiviral nanomaterial compared to other nanomaterials. This work highlighted the antiviral effect of Gel-FeS NPs and provided a new strategy for ferrous-based nanoparticles against PRRSV. Graphical Abstract
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Advanced Materials Interfaces
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2022
·Vol. 9
·期 6
·2101510
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IF 6.389
Jun Li,Tongtong Xu,Han Bai,Zhenyu Shen,Yanyan Huang,Wenwen Xing,Zhongxiang Zhou
Microwave absorption enhancements through atomic doping in traditional materials remain a significant challenge. Herein, the MAX phase materials of Fe-doped Ti 3 AlC 2 ( x Fe-Ti 3 AlC 2 , abbreviated as TFAC- x , x = 0, 0.2, 0.3, 0.4) are synthesized via solid-phase reaction method. The X-ray diffraction, Raman, and scanning electron microscopy confirm that the TFAC- x samples are of high quality with multiphase coexistence structure and abundant interfaces. Relying on the improved impedance matching originating from structural modulation, the synergistic effects of dielectric loss and magnetic loss, as well as the enhanced interfacial polarization and defect dipole polarization, both the microwave absorption intensity and bandwidth are greatly strengthened. Accordingly, the minimum reflection loss of TFAC-3 sample can achieve -33.3 dB and the absorption bandwidth could reach 3.9 GHz with the thickness of only 1.5 mm. Moreover, the investigated frequency can cover 86% through regulating their thickness from 1.5 to 5 mm, showing the excellent frequency modulation effect. The revealed improvements in both the microwave absorption performance and properties of TFAC- x may enlighten the designing of microwave absorption materials and have potentials for widespread applications.
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POWDER METALLURGY
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2022
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IF 2.228
Ying Zhang,Meng Xiao,Yi-min Zhou,Yi-fu Shen
The eutectic FeNiCoCrTi0.6Nb0.4 high-entropy alloy coating (HEAC) is annealed in Argon at 450°C, 850°C and 1050°C to investigate the thermal stability. The results show that annealed coatings are all composed of BCC solid solution and Laves phase with no production of new phases. The fine eutectic cells can be maintained at a higher temperature in that continuous intracellular coarsening does not occur until annealing at 1050°C. With the increase of annealing temperature, the microhardness and wear resistance of FeNiCoCrTi0.6Nb0.4 coating increase first and then decrease slightly. Especially, the microhardness of FeNiCoCrTi0.6Nb0.4 annealed at 1050°C is only 6.03% lower than that of unannealed one, and the wear rate is only 10.70% higher than that of unannealed one, which strongly indicates that eutectic FeNiCoCrTi0.6Nb0.4 HEAC has excellent thermal stability and can be well applied in high-temperature environments.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Hongwei Pang,Lijie Liu,Ziang Bai,Ruixing Chen,Hao Tang,Yawen Cai,Shujun Yu,Baowei Hu,Xiangke Wang
Surface sulfidation has become a desirable technique to enhance the physicochemical properties of nanoscale zero-valent iron (NZVI) and improve the decontamination efficiency for organic pollutants. However, the macroscopic elimination performance and microscopic reaction mechanism of sulfide NZVI (SNZVI) towards organic matters remains uncovered. Herein, we fabricated SNZVI via one-step dithionite-method and applied it for heterogeneous Fenton-like elimination of 2,4-Dichlorophenol (DCP). The sulfidation technique greatly improved the stability, specific area, oxidized resistance, hydrophobicity, and functionality. The efficiency of degradation (86.3%) was approximately 7 times higher than adsorption (12.6%) under N 2 condition, indicating the promising potential of SNZVI in environmental governance. Moreover, Fenton-like reaction and reactive oxygen species (ROS) were confirmed to dominate the degradation process, and the generated radicals had priority to degrade DCP rather than corroded SNZVI. Furthermore, the result of gas chromatography-mass spectrometry (GC–MS) confirmed that DCP was mainly decomposed into harmless alkanes and inorganic matters, which significantly reduced the perniciousness of DCP. Overall, this research bridged the knowledge gap between organic pollutant removal and the advanced oxidation reaction of NZVI-based materials after surface sulfidation.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2023
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IF 8.7
Chengjie Xue,Yunqiang Yi,Long Zhou,Zhanqiang Fang
The problem of co-contaminated soil at e-waste dismantling sites is serious and constitutes a critical threat to human health and the ecological environment. Zero-valent iron (ZVI) has been proven to be effective in the stabilization of heavy metals and the removal of halogenated organic compounds (HOCs) from soils. However, for the remediation of co-contamination of heavy metals with HOCs, ZVI has disadvantages such as high remediation cost and inability to take into account both pollutants, which limits its large-scale application. In this paper, boric acid and commercial zero-valent iron (cZVI) were used as raw materials to prepare boric acid-modified zero-valent iron (B-ZVI bm ) through a high-energy ball milling strategy. B-ZVI bm coupled with persulfate (PS) to achieve simultaneous remediation of co-contaminated soil. The synergistic treatment of PS and B-ZVI bm resulted in the removal efficiency of 81.3% for decabromodiphenyl ether (BDE209) and the stabilization efficiencies of 96.5%, 99.8%, and 28.8% for Cu, Pb, and Cd respectively in the co-contaminated soil. A series of physical and chemical characterization methods showed that the oxide coat on the surface of B-ZVI bm could be replaced by borides during ball milling. The boride coat facilitated the exposure of the Fe 0 core, promoted the corrosion of ZVI and the orderly release of Fe 2+ . The analysis of the morphological transformation of heavy metals in soils revealed that most of the heavy metals in the exchangeable, carbonate-bound state were transformed into the residue state, which was the key mechanism for the remediation of heavy metal-contaminated soils with B-ZVI bm . The analysis of BDE209 degradation products showed that BDE209 was degraded to lower brominated products and further mineralized by ZVI reduction and free radical oxidation . In general, B-ZVI bm coupled with PS is a good recipe for synergistic remediation of co-contaminated soils with heavy metals and HOCs.
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Journal of Environmental Chemical Engineering
·
2021
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IF 5.909
Yanping Zhang,Peng Xiangshi,Jiayu Tian,Fen Li,Xuteng Fan,Liran Ma,Ruijun Zhang
Waste waterworks sludge and walnut shell were employed to synthesize a composite catalyst consisting of Fe 0 /Fe 3 O 4 /biochar using a one-step pyrolysis process . The synthesized catalyst was applied to active peroxymonosulfate (PMS) for studying the degradation of methylene blue (MB). Various characterization results confirmed that Fe 0 and Fe 3 O 4 were distributed on the surface of composite catalyst, which had a porous structure and large specific surface area of 109.87 m 2 /g. Owning to these structural properties, the composite catalyst presented desirable catalytic capability and reusability. When 0.4 g/L PMS and 0.3 g/L composite catalyst were added into the MB solution (pH 7), 99.9% MB could be degraded within 60 min at a high reaction rate of 0.1550 min −1 , which was much better than that of zero valent iron (ZVI)/PMS system. After the three cycles, the catalyst could still maintain an MB degradation of over 68.0%. The free radical quenching experiments and electron paramagnetic resonance experiments demonstrated that SO 4 − ∙ and HO ∙ were generated during the activation of PMS. The X-ray photoelectron spectrometer analysis revealed that Fe 3 O 4 and various functional groups, such as C O were formed on the composite catalyst, and the Fe 2+ was oxidized to Fe 3+ . Furthermore, the iron leaching experiments indicated that both the homogeneous and heterogeneous reactions occurred during the catalysis of PMS using the synthesized composite catalyst. Acidity and higher temperature were conducive to the catalytic reaction . This study offers a green and sustainable route for simultaneously degrading contaminants and reusing wastes.
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