Journal of Water Process Engineering
·
2025
·
IF 6.7
Mengqiao Luo,Lei Tang,Lei Fang,Yongchao Zhou,Yiping Zhang
Recently, Antimony (Sb) pollution in wastewater is a global environmental issue. The bio-electrochemical system (BES) converts Sb(V) to less toxic Sb(III) via microbial electrochemical processes. In this study, the effect factors of Sb(V) removal by BES are explored and the removal mechanism by BES is clarified. Results show that under acidic conditions, the removal rate of Sb(V) was 100 %, which is far more than its removal efficiency under a neutral condition. Sulfide concentration critically regulates efficiency: levels >8.5 mg L −1 inhibit removal, while <6 mg L −1 promote it via H₂SbS₄ − formation, linked to sulfate-reducing bacteria (SRB) metabolizing S 2− . Furthermore, the mechanism of bio-electrochemical system (BES) reactor was further clarified by 16 s rRNA high-throughput sequencing. There are three types of bacteria play an important role in the removal of Sb from BES. ARB can reduce directly Sb(V) to sediment (i.e. Sb 2 O 3 , Sb(OH) 3 ) in BES, respectively. Electrochemically active bacteria (EAB) can transfer electrons to Sb(V) in solution by graphite electrodes and promote the reduction in BES. And SRB can use organic matter as electron donor to reduce SO 4 2− to S 2− in respiratory metabolism process. Electric fields can stimulate parts of microbial activities, so that it can improve the removal efficiency of Sb(V). Sb of the wastewater are removed by antimony-reducing bacteria, sulfide reduction, and electrochemistry combined with microbial reduction. Therefore, BES have a good performance in the removal of Sb(V) in acidic wastewater. This study presents a novel method for treating Sb(V), which is more sustainable compared to traditional chemical approaches.
研究领域:
环境生物学
·
微生物学
·
废水处理工程
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DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 20
·4067
·
IF 4.6
Yaping Cheng,Haimin Liao,Huimei Shan,Yunquan Liu,Huinan Mo
Antimony (Sb), as a toxic heavy metal, has drawn worldwide attention, and its efficient removal from water has become increasingly urgent. In this study, an iron-modified alkaline lignin chitosan (Fe-ALCS) gel bead is prepared by the freeze-drying method to remove Sb(III) from the aqueous solution. The static adsorption experiment discusses the various environmental influences on the adsorption performance of Fe-ALCS for Sb(III) removal. The adsorption mechanism is explored by combining adsorption kinetics, isothermal adsorption, and characterization methods (such as FTIR, XRD, XPS, etc). The results show that the equilibrium adsorption capacity of Sb(III) decreases with the increase in pH and mass–volume ratio. With the increase in the initial Sb(III) concentration,Qeshowed a rapid increasing trend in the range of 50–100 mg/L and continued to rise with the extension of contact time (t), reaching the maximum value at 3540 min. Under the optimal conditions of pH = 3,m/v= 1.0 g/L, andC0= 20 mg/L, the removal efficiency (Re) value is 95.07%, which is still approximately 86.8% after five adsorption–desorption cycles. The maximum adsorption capacity is 266.58 mg/g fitted by the Langmuir model. The adsorption mechanism is mainly related to the iron-based active site of Fe–O(OH), where the O–H on its surface undergoes ligand exchange with Sb(OH)3to form a stable Fe–O–Sb coordination structure. Additionally, C–OH, C–O, and other functional groups in ALCS also contribute to Sb adsorption. Fe-ALCS is an environmentally friendly, renewable, and convenient biomass adsorbent with good potential for wastewater treatment.
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Ning Zhang,Xiaojing Chen,Jiaojiao Zhao,Pengfei He,Xuli Ding
Despite the great potential of nano-alloying anodes to prominently increase the electrochemical performance in sodium ions batteries , the low-cost and mass-produced methods, as well as the optimization design of alloy-based composites are still needed. Herein, a simple but effective electrospinning method is used to fabricate Sb/P@C composite nanospheres with adjustable P, Sb ratio and uniform morphology. It is found that the amount of Sb inside the Sb/P@C composite and the porous structure can be readily modulated. It is worth noting that the improved electrochemical performance of the Sb/P@C anodes can be attributed to the synergistic effect of Na + ions storage and superior charge transfer in the fabricated composite with reciprocally inlaid Sb/P and C that inhibiting the aggregation of nanospheres . Particularly, the mosaic distribution of Sb/P nanospheres in the carbon matrix not only accelerate the ions and electrons transfer but also serve as the buffer for alleviating the volumetric variation. Importantly, a high capacity of 350 mAh g −1 can be achieved even rising current density to 500 mA g −1 , indicating great potential for high rate sodium ions anodes. The tactics of this work should be general to other alloy-type systems, such as Sn, Bi et al., which also suffer from severe volume expansion causing electrode performance degradation.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2019
·
IF 7.149
Yanbiao Liu,Peng Wu,Fuqiang Liu,Fang Li,Xiaoqiang An,Jianshe Liu,Zhiwei Wang,Chensi Shen,Wolfgang Sand
Herein, we rationally designed a dual-functional electroactive filter system for simultaneous detoxification and sequestration of Sb(III). Binder-free and nanoscale TiO2-modified carbon nanotube (CNT) filters were fabricated. Upon application of an external electrical field, in situ transformation of Sb(III) to less toxic Sb(V) can be achieved, which is further sequestered by TiO2. Sb(III) removal kinetics and capacity increase with applied voltage and flow rate. This can be explained by the synergistic effects of the filter’s flow-through design, electrochemical reactivity, small pore size, and increased number of exposed sorption sites. STEM characterization confirms that Sb were mainly sequestered by TiO2. XPS, AFS, and XAFS results verify that the Sb(III) conversion process was accelerated by the electrical field. The proposed electroactive filter technology works effectively across a wide pH range. The presence of sulfate, chloride, and carbonate ions negligibly inhibited Sb(III) removal. Exhausted TiO2–CNT filters can be effectively regenerated using NaOH solution. At 2 V, 100 μg/L Sb(III)-spiked tap water generated ∼1600 bed volumes of effluent with >90% efficiency. Density functional theory calculations suggest that the adsorption energy of Sb(III) onto TiO2 increases (from −3.81 eV to −4.18 eV) and Sb(III) becomes more positively charged upon application of an electrical field.
研究领域:
环境科学
·
材料科学
·
化学工程
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DOI
高影响因子
APPLIED CLAY SCIENCE
·
2026
·
IF 5.8
Xiaoyu Li,Wenqing Zhang,Kang Peng,Zheng Zhou,Yewei Dou,Jianguo Feng
Molybdenum disulfide (MoS 2 ) is promising for aqueous-phase catalytic hydrogenation due to its two-dimensional morphology and abundant catalytic active sites, but limited by poor conductivity and hydrophobicity. Herein, a ternary FK/ATO/MoS 2 composite was fabricated by growing MoS 2 nanosheets on an antimony-doped tin oxide (ATO)-modified hydrophilic kaolinite nanoflakes (FK) via simple coprecipitation-hydrothermal method. Evaluated by the aqueous hydrogenation of 4-nitrophenol (4-NP), the optimal composite with 25% Sb doping in ATO and 50% MoS 2 loading (FK/ATO/MoS 2 –50%) exhibits remarkably enhanced hydrogenation activities as compared to other catalysts, and the reaction rate constant is 0.0809 min −1 , 10 times higher than that of pure MoS 2 (0.0081 min −1 ). The improved performances are due to the synergistic contributions from the exposed active sites of MoS 2 , the conductivity of ATO, the hydrophilicity and dispersion of kaolinite. This work presents an efficient aqueous-phase hydrogenation catalyst and a general design strategy for synergistic “support–mediator–active component” catalytic systems.
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高影响因子
Matter
·
2019
·
IF 0
Wen Tao Jing,Ying Zhang,Yan Gu,Yong Fu Zhu,Chun Cheng Yang,Qing Jiang
The sodium-ion battery has shown great potential to replace the lithium-ion battery, especially for large-scale energy-storage systems. In this work, a hybrid material of ultra-small Sb nanoparticles encapsulated in unique N-doped carbon nanonecklace (Sb/N-CNN) has been synthesized for the first time via electrospinning and in situ substitution. As an anode material in sodium-ion batteries, the as-fabricated Sb/N-CNN exhibits superior rate property (314 mAh g −1 at 20 A g −1 ) and cycling stability (401 mAh g −1 after 6,000 cycles at 1 A g −1 ), outperforming other Sb-based materials. Such excellent performances originate from the ingenious necklace-like structure of Sb/N-CNN, which supplies efficient electrolyte diffusion paths and more active sites for Na + insertion/extraction, disperses the stress caused by the large volume change of Sb nanoparticles during the cycling process, and also reduces the electrode resistance. This study provides a facile strategy for construction of a well-designed structure for advanced energy-storage technologies.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
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DOI
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Li Lv,Pengfei Cheng,Yinglin Wang,Luping Xu,Bao Zhang,Chao Lv,Jian Ma,Yue Zhang
In this paper, the preparation process and gas sensing performance of Sb-doped three-dimensional spinel ferrite (3D ZnFe 2 O 4 ) with well-assembled macroporous spherical structure have been investigated. Sb-doped 3D ZnFe 2 O 4 macroporous spheres (MPs) were prepared through a one-step ultrasonic spray pyrolysis (USP) method by sacrificing self-assembly sulfonated polystyrene spheres (S-PSs). The interconnected macropores (an average pore size about 200 nm) can be observed in the as-prepared materials by SEM and TEM characterization, which provided the dual functions of accelerating the diffusion of gas molecules and providing more reactive sites. The XPS analysis showed that the element Sb existed as Sb 5+ in doped samples. Compared with the pure 3D ZnFe 2 O 4 MPs (response = 18), 0.5 % Sb-doped sample presented the response of 35.5–100 ppm n-butanol at 250 °C, and also revealed excellent selectivity and long-term stability to n-butanol. The greatly enhanced sensing performance of Sb-doped simples can be attributed to the construction of 3D spheres with interconnected macroporous structures and the modification of Sb doping. The formation of p-n junctions at interface through Sb doping also improved the sensing performance for n-butanol. In addition, the relative sensing mechanism of Sb-doped 3D ZnFe 2 O 4 MPs for n-butanol sensing has been discussed in detail.
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jue Wang,Xiaochi Lu,Yaoyao Li,Lixi Wang,Haikui Zhu,Zhenxiao Fu,Faqiang Yan,Xiang Wang,Qitu Zhang
Co 0.5 Ti 0.5 Nb 1- x Sb x O 4 ( x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) ceramics with low dielectric losses were fabricated by the conventional solid-state reaction method. A single-phase tetragonal rutile structure with a superlattice diffraction peak was observed. The temperature coefficient of resonant frequency ( τ f ) decreased with an increase in oxygen octahedron distortion. The quality factor ( Q × f ) was increased owing to the enhanced cation ordering, which reduced the lattice energy and internal stress of the oxygen octahedron. Sb 3+ was transformed into Sb 5+ , while the transformation of Co 2+ to Co 3+ was inhibited. The as-prepared Co 0.5 Ti 0.5 Nb 0.5 Sb 0.5 O 4 ceramic exhibited ε r of 38, Q × f of 32,047 GHz, and τ f of 32.6 parts-per-million/°C.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Catalysts
·
2015
·Vol. 5
·期 3
·1388-1398
·
IF 2
Long-Long Wang,Xiao-Lu Cao,Ya-Jun Wang,Qiao-Xia Li
The newly proposed mimetic underpotential deposition (MUPD) technique was extended to modify Pd surfaces with Sb through immersing a Pd film electrode or dispersing Pd/C powder in a Sb(III)-containing solution blended with ascorbic acid (AA). The introduction of AA shifts down the open circuit potential of Pd substrate available to achieve suitable Sb modification. The electrocatalytic activity and long-term stability towards HCOOH electrooxidation of the Sb modified Pd surfaces (film electrode or powder catalyst) by MUPD is superior than that of unmodified Pd and Sb modified Pd surfaces by conventional UPD method. The enhancement of electrocatalytic performance is due to the third body effect and electronic effect, as well as bi-functional mechanism induced by Sb modification which result in increased resistance against CO poisoning.Keywords:formic acid oxidation;palladium;Sb modification;mimetic underpotential deposition
研究领域:
电化学
·
催化材料
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Yaosheng Liu,Hanmeng Liu,Zhixia Yao,Yongxing Diao,Guangxing Hu,Qifang Zhang,Yujing Sun,Zhuang Li
pH electrodes exhibited wide applications in the fields of food science, environmental science, and bioanalytical analysis. In this work, we demonstrate the facile fabrication of silver-antimony (Ag–Sb) binary alloy electrodes through a one-step melt casting method. XRD, SEM and EDS were used to characterize the alloy electrodes. The response mechanism of the pH electrode was studied by Tafel plots, which clarified the role of metal (Sb) and metal oxide (SbO ads ) in the pH response process. The corrosion resistance of the alloy electrode was researched by electrochemical impedance spectroscopy (EIS), which proved the advantages of the Ag–Sb alloy electrodes. In addition, our Ag–Sb pH electrodes exhibited promising sensing performance with the near-Nernstian response sensitivity is 54.6 mV/pH. The other performances including response time, stability, reversibility, hysteresis, and temperature coefficient, also demonstrated that the Ag–Sb binary alloy electrodes have good pH speciality, and it will potential applications for environmental monitoring in situ. These research results can complement and perfect the theoretical basis of metal/metal oxide pH electrodes, thus guiding the preparation of metal/metal oxide pH electrodes and promoting the exact and extensive application of metal/metal electrodes in more aspects.
研究领域:
材料科学
·
分析化学
·
环境科学
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2020
·
IF 5.715
Si Xu,Zuqi Zhong,Weizhen Liu,Hong Deng,Zhang Lin
Pollution and remediation of antimony in aquatic ecosystems have been paid increasing attention. In the present work, environmentally friendly nano-MgO was used for the first time to remove Sb(III) from the water system. The batch experiments indicated that the nano-MgO calcined at 400 °C (named 400-MgO) exhibited superior adsorption capacity for Sb(III). The adsorption isotherm was fitted well with the Freundlich model, and especially when the initial concentration is 15 mg‧L −1 , the adsorption capacity is as high as 140.1 mg‧g −1 . Researches through X-ray diffraction (XRD), Transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) showed that the main removal mechanisms lie in the generation of Mg active sites, which is capable of coordinating Sb(III), during the hydration process of MgO, providing a nucleation center for the progressive production of MgSb 2 O 4 . As a whole, precipitation is the predominant mechanism for MgO to remove Sb(III). Over time, a part of MgO is hydrated to Mg(OH) 2 , and consequent chemisorption also helps to remove Sb(III). Our work has demonstrated that nano-MgO is a promising adsorbent for Sb(III) removal from contaminated water and provided new insights into the interaction mechanism between MgO and Sb(III).
研究领域:
环境科学
·
化学
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产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Jihai Gu,Geoffrey Sunahara,Robert Duran,Jun Yao,Yongqiang Cui,CengCeng Tang,Hongquan Li,Victor G. Mihucz
Understanding the mechanism(s) of microbial resistance to antimony (Sb) is critical in the bioremediation of Sb polluted environments. Here a novel bacterium ( Acinetobacter sp. JH7) isolated from mine tailings decreased the Microtox toxicity of a Sb(III)-containing medium. DNA sequencing and physiological testing were employed for the identification and characterization of strain JH7. Following a batch experiment, Fourier transform infrared spectroscopy (FTIR) and antimony speciation analyses determined the adsorption and oxidation of antimony. Analyses of Sb(III) distribution revealed that extracellular polymeric substances and cell walls inhibited Sb(III) entry into JH7 cells. FTIR studies indicated that key functional groups including –OH, C–N, and C–O likely participated in Sb(III) biosorption. Isothermal and kinetic studies revealed that Sb(III) sorption to viable JH7 cells fitted the Langmuir model ( R 2 = 0.99) and could be described by pseudo-second order kinetics ( R 2 = 0.99). Furthermore, the increase of anti-oxidative enzymatic activity of JH7 enhanced the intracellular detoxification of Sb(III), which would indirectly contribute to the Sb(III) resistance ability of strain JH7. Our results indicate that biosorption and ROS oxidation of Sb(III) were likely responsible for the decreased toxicity of Sb. The greater understanding how Acinetobacter sp. JH7 lowers the environmental Sb(III) toxicity could provide a basis for future research and subsequent development of technologies for the remediation of Sb contaminated sites.
研究领域:
环境微生物学
·
生物修复
·
毒理学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）