JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Worku Lakew Kebede,Dong-Hau Kuo,Misganaw Alemu Zeleke,Kedir Ebrahim Ahmed
Environmentally toxic methylene blue organic pollutants are of more concerns due to their antagonistic effects on human health, animals, and plants, thus needs serious attention for their removal. For elimination purpose, the Sb-doped Mo(O,S) 3 oxy-sulfide nanoplate catalyst with different Sb contents was synthesized at low temperature of 95 °C via a facile method. The structural, morphological, chemical composition, optical properties , and electrical conductivity of the catalyst were characterized with different techniques. The photocatalytic performance of Sb-Mo(O,S) 3 at various Sb contents was investigated for the degradation of methylene blue dye under visible light irradiation using hydrogen peroxide as an effective electron scavenger to further accelerate the reaction. It was observed that the incorporation of Sb enhanced the catalytic activity. Sb-Mo(O,S) 3 -10 was the most efficient catalyst with excellent activity to degrade 99.7% of the dye within 60 min irradiation time. The degradation kinetics follows a pseudo-first-order reaction with a rate constant 8.78 × 10 −2 min −1 , which is 3-fold higher than that for Sb- Mo(O,S) 3 -0 catalyst. Sb-Mo(O,S) 3 -10 showed slower recombination of photogenerated charge carriers and lower charge transfer resistance which proved to be capable for the removal of toxic methylene blue organic pollutant.
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RSC Advances
·
2018
·Vol. 8
·期 25
·13933-13944
·
IF 2.936
Kui Yang,Hui Lin,Shangtao Liang,Ruzhen Xie,Sihao Lv,Junfeng Niu,Jie Chen,Yongyou Hu
Tubular porous Ti/SnO2–Sb filters with excellent penetration flux (∼61.94 m3 m−2 h−1 bar−1) and electrochemical activity were prepared by a sol–gel method using low-cost porous titanium filters as the substrates. The porous Ti/SnO2–Sb filters were used as anodic reactive electrochemical membranes to develop reactive electrochemical filter systems, by combining membrane filtration technology with the electrooxidation process, for water treatment. A convection-enhanced rate constant of 4.35 × 10−4 m s−1 was achieved for Fe(CN)64− oxidation, which approached the kinetic limit and is the highest reported in an electrochemical system. The electrooxidative performance of the reactive electrochemical filter system was evaluated with 50 mg L−1 rhodamine B (RhB). The results showed that the reactive electrochemical filter system in flow-through mode resulted in an 8.6-fold enhancement in RhB oxidation as compared to those in flow-by mode under the same experimental conditions. A normalized rate constant of 5.76 × 10−4 m s−1 for RhB oxidation was observed at an anode potential of 3.04 V vs. SCE, which is much higher than that observed in a reactive electrochemical filter system with carbon nanotubes and/or Ti4O7 (1.7 × 10−5–1.4 × 10−4 m s−1). The electrical energy per order degradation (EE/O) for RhB was as low as 0.28 kW h m−3 in flow-through mode, with a relatively short residence time of 9.8 min. The overall mineralization current efficiency (MCE) was calculated to be 83.6% with ∼99% RhB removal and ∼51% TOC removal. These results illustrate that this reactive electrochemical filter system is expected to be a promising method for water treatment.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Xiezhen Zhou,Siqi Liu,Hongxia Yu,Anlin Xu,Jiansheng Li,Xiuyun Sun,Jinyou Shen,Weqing Han,Lianjun Wang
A highly ordered three-dimensional macro-porous PbO 2 (3D porous PbO 2 ) electrode has been prepared for electrochemical oxidation of nitrogen-heterocyclic compounds. The 3D porous PbO 2 electrode was fabricated by templated electrochemical deposition method with TiO 2 nanotube arrays as substrate and SnO 2 -Sb as intermediate layer. The morphology and composition characterization of the 3D porous PbO 2 electrode was performed by field emission scanning electron microscopy and X-ray diffraction, which revealed a uniform distribution of highly ordered macro-porous β-PbO 2 structure. The Brunner−Emmet−Teller analysis suggested the electrode possessed large specific surface area of 37.39 m 2 ·g −1 . Electrochemical measurements indicated the electrode had a favourable oxygen evolution potential of 1.89 V and inner voltammetric charge of 14.48 mC·cm −2 , which were higher than that of conventional PbO 2 electrode. Furthermore, the electrochemical oxidation and TOC removal percentage of pyrrole , pyrazole and tetrazole obtained by 3D porous PbO 2 electrode were 93.4%, 72.7%, 61.2% and 66.7%, 57.3%, 38.6% respectively, which were also superior to conventional PbO 2 electrode. The intermediates were detected and analyzed by high-performance liquid chromatography, gas chromatography-mass spectrometer, and ion chromatography to propose a degradation pathway of pyrrole, pyrazole and tetrazole. Finally, quantum chemical calculation was introduced in this study by density function theory method, which is consistent with the experimental detection.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Qiaolin Ren,Wei Zhang,Wenjun Yan,Zhongde Wang
Electrochemical oxidation (ECO) technology has proven to be efficient for organic wastewater treatment. Given the strong demand for the development of anodes with superior stability, high activity, and low cost that can be applied industrially, herein, a stable Sb-doped Ti/RuO 2 -IrO 2 -SnO 2 electrode (SSE) is fabricated and served as an anode for the degradation of aniline using diverse power supply modes. The SSE shows better performance than the Ti/RuO 2 -IrO 2 -SnO 2 electrode (SE) in facilitating electron transport, enlarging the electrochemical active surface area, enhancing stability, and increasing electrocatalytic activity. Theoretical calculations reveal the stability and electronic properties of the synthesized electrodes. Furthermore, by degrading complex molecules and real wastewater, the practical industrial application of SSE is explored. Subsequently, the active species and possible degradation pathways are systematically elucidated. Therefore, this work provides a promising and superior-performance electrode with attractive application prospects for the high-efficient degradation of refractory organic wastewater.
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JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Shaopeng Zhang,Jie Ding,Dayong Tian,Jing Wang,Jiale Zhang,Minghua Lu
China faces severe antimony pollution due to long-term, high-intensity mining and smelting operations. Long-term exposure to Sb(III) can lead to chronic respiratory problems. Adsorption method is used to remove Sb(III) because of its simplicity, economy and high efficiency. Therefore, a novel MIL-101(Fe)-Cl/SA hydrogel with oxidation-sorption bifunctionality was developed. 1602 cm −1 and 1025 cm −1 correspond to N H and S = O indicate N-chlorosulfonamide is bonded to MIL-101(Fe)-Cl/SA. MIL-101(Fe)-Cl/SA exhibited rough and wrinkled surfaces with numerous irregular particles by SEM. The presence of O (22 %) and Cl (2 %) confirmed the incorporation of N-chlorosulfonamide and SA into MIL-101(Fe)-Cl/SA by EDS and mappings. The adsorption capacities of MIL-101(Fe)-Cl/SA were 86 mg/g at 298 K and 123.21 mg/g at 328 K by Langmuir model. Kinetic and equilibrium correspond to pseudo-second-order and Langmuir model, respectively. Adsorption was spontaneous and endothermic by thermodynamic analysis. MIL-101(Fe)-Cl/SA exhibited enhanced selectivity in solution containing various ions. Moreover, MIL-101(Fe)-Cl/SA demonstrated potential for regeneration and reuse. The removal process primarily involved oxidation, electrostatic interaction, and complexation. In summary, the capability of MIL-101(Fe)-Cl/SA to adsorb and oxidize Sb(III) underscores its promising potential in mitigating the hazards associated with Sb(III).
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Fanhua Yu,Shaojie Hong,Bin Guo,Xiangqian Ren,Xingfu Zhou
Ozone water is widely used in disinfection area and wastewater treatment due to its strong oxidation. Recent studies have found that Ti/SnO 2 -Sb-Ni (NATO) anode has higher O 3 generation efficiency due to its higher oxygen evolution potential. In this paper, TiO 2 nanotubes (TiO 2 -NTs) were prepared by anodic oxidation method as the basic substrate material for the Ti/SnO 2 -Sb-Ni electrode, and SnO 2 -Sb-Bi was introduced as the intermediate layer to investigate the electro-synthesis of ozonated water. Studies show that the modification of the TiO 2 -NTs substrate provides a larger specific surface area for the reaction and accelerates the transfer of electrons from the oxide layer to the substrate. The introduction of the SnO 2 -Sb-Bi intermediate layer effectively delays the electrode deactivation and also enhances the electron transport. When the Ti/TiO 2 NTs/SnO 2 -Sb-Bi/NATO electrode was used and electrolyzed for 15 min, the ozone water concentration reached 13.15 mg L −1 , about twice as much as the unmodified electrode. The effects of current density and the coating numbers of active layers on the electrosynthesis of the ozonated water were also investigated. Finally, the application of ozonated water in the decolorization of organic dye wastewater was investigated based on its strong oxidation property, the degradation rate of 40 ppm methylene blue reached 94.5 % and the COD removal rate reached 72.9 % in 30 min. In addition, the cell voltage remained constant during decoloration, indicating the good stability of the electrode. This study also opens a door to the rapid electrochemically decoloration of wastewater and sterilization area by using electrochemically obtainable ozone water.
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PLANT AND SOIL
·
2025
·
IF 4.1
Xiong Zicong,Ling Caiyuan,Zhang Qian,Tang Junwei,Gu Jingying,Su Yuan,Yang Weiwei,Zhang Chaolan
Background and aims The oxidation of antimony (Sb) by rhizosphere microorganisms is regarded as a strategy to mitigate the phytotoxicity of Sb(III). This study aims to isolate a highly efficient Sb-oxidizing bacterium (named HC02) from Sb-contaminated soil and to investigate the bacterium's impact on the growth of Brassica napus under practical soil conditions. Methods The oxidative properties of HC02 were assessed in LB liquid medium at a concentration of 0.05 mM. The Brassica napus pot experiment involved inoculating HC02 using two methods: root irrigation treatment (IR02) and root dipping treatment (DR02). The growth of Brassica napus , its Sb content, the chemical properties of the rhizosphere soil, and the chemical forms of Sb present were analyzed. Results The oxidation rate of 0.05 mM Sb(III) by HC02 exceeds 90% within 48 h. HC02 possesses the ability to secrete 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase and indole acetic acid (IAA). The addition of HC02 significantly promoted the growth of Brassica napus . Furthermore, both IR02 and DR02 treatments resulted in a significant reduction of total Sb content in roots, with decreases of 38.7% and 41.6%, respectively. Additionally, these treatments also led to a reduction in Sb(III) content in leaves, with reductions of 7.9% and 20.2%. Conclusions HC02 exhibits a strong oxidizing ability towards Sb(III). The incorporation of HC02 promotes the growth of Brassica napus while effectively preventing the absorption and accumulation of Sb. This research offers a theoretical foundation for the safe utilization of Sb-contaminated soil and the secure production of vegetables. Graphical • Lysinibacillus HC02 is a new highly efficient antimony-oxidizing bacterium. • Antimony toxicity of Brassica napus can be mitigate by Lysinibacillus HC02. • The mechanisms of HC02 regulating absorption and accumulation of Sb in Brassica napus was revealed.
研究领域:
环境微生物学
·
植物生理学
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Materials Today Physics
·
2022
·
IF 11.021
Lu Yu,Wenhao Li,Zipei Zhang,Sitong Wei,Juan Li,Zhen Ji,Jingxuan Zhuo,Guiwu Lu,Weiyu Song,Shuqi Zheng
N-type Mg 3 Sb 2 thermoelectric material has a complex crystal structure and electronic structure, which is a new thermoelectric material with excellent application prospects. The state density and band structure of Mg 24 Sb 16 and Bi/Se/Pr–Se/Nd–Se doped Mg 24 Sb 16 are first-principles calculated. Se/Pr–Se/Nd–Se doped increases the density of states around the Fermi level. Bi-doped does not impact the band structure because the electronic structure between Sb and Bi are similar. The band gap of Pr–Se/Nd–Se doped becomes narrower, which is more conducive to carrier transport and increases carrier concentration than that of single-doped Se. The experimental results show that Pr and Nd replace Mg to provide more electrons for the system. The carrier concentration of the co-doped sample increases significantly, thus improving the power factor and optimizing the samples' electrical properties. The highest ZT value of the Mg 3.2 Sb 1.5 Bi 0.49 Se 0.01 sample is 1.21. Pr–Se/Nd–Se co-doped ZT values are 1.67 and 1.74, respectively, 38% and 43% higher than the Mg 3.2 Sb 1.5 Bi 0.49 Se 0.01 sample. Multi-element doped is an effective strategy to improve the thermoelectric properties of materials .
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Weimin Chen,Renjian Deng,Yilin Chen,Chuang Wang,Baolin Hou,Saijun Zhou,Andrew Hursthouse
Arsenic and antimony removal technology have received significant attention due to their considerable danger to aquatic ecosystems. In this study, we designed HCO–(Fe 3 O 4 ) x adsorbents with substantial functional groups, ample pore spaces, and considerable surface area , specially tailored for the simultaneous adsorption of pentavalent arsenic (As( V )) and pentavalent antimony (Sb(V)). The adsorption performance of HCO–(Fe 3 O 4 ) x was subjected variably to the Ce/Fe molar ratio (CFMR), solution pH, and co-existing anions (SO 4 2− , PO 4 3− , SiO 3 2− ). The affinity order of As(V) and Sb(V) onto HCO–(Fe 3 O 4 ) x in binary systems was pH-dependent. At a pH of 2.0, Sb( V ) exhibited stronger adsorption than As(V), whereas the opposite trend occurred at pH levels above 4.0. Analysis of the kinetic data revealed the pseudo-second-order kinetic model was the most appropriate, indicating that chemical adsorption was the predominant mechanism. Notably, the formation of inner-sphere complexes led to a higher adsorption rate for As( V ) compared to Sb(V), attributed to a lower energy barrier of 0.863 eV, facilitating the breakdown of the Fe O bond in As(V)'s asymmetric tetrahedral structure. Various analyses (FTIR, XRD, and XPS) demonstrated that adsorption mechanisms involved multiple processes like hydrogen bonding , ligand exchange, electrostatic attraction, and complexation. The primary contributions for the adsorption of As( V ) and Sb(V) were the inner-sphere complex of cerium , oxygen and arsenic atoms (Ce O As) and the outer-sphere complex of iron, oxygen and antimony atoms (Fe O Sb), respectively, indicating significant differences in the mechanisms. These findings underscored the potential of HCO–(Fe 3 O 4 ) x in mitigating As( V ) and Sb(V) water pollution, emphasizing its considerable promise as an effective remediation agent.
研究领域:
环境化学
·
水污染治理
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吸附科学
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环境功能材料
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重金属去除
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Microbial Cell Factories
·
2025
·Vol. 24
·期 1
·241
·
IF 4.9
Ling Jingwen,Guo Yan,Liu Mingqi,Yun Jianpei,Li Boxin,Yang Xueqin,Wu Xuli,Hui Chang-ye
Background ArsR-based whole-cell biosensors offer sensitive colorimetric detection of arsenite [As(III)], yet their broad reactivity toward Group 15 metalloids—especially antimonite [Sb(III)]—limits field specificity. The recently identified ant operon from Comamonas testosteroni JL40 confers Sb(III)-selective resistance via the efflux ATPase AntA, the metallochaperone AntC, and the regulator AntR, providing genetic parts to suppress Sb(III) cross-talk.Results We systematically introduced antA, antC, and three antR homologs into an ArsR regulator coupled with a deoxyviolacein reporter chassis (pJ23119-K12). Co-expression of AntA and AntC under a moderate constitutive promoter (PceuR) shifted the Sb(III) limit of detection (LOD) from 0.073 µM to 0.586 µM, with a modest increase in the As(III) LOD to 0.018 µM. Subsequent integration of AntR1 not only maintained the As(III) LOD at 0.018 µM but also unexpectedly amplified the As(III) signal, extending the linear range to 36 nM–37.5 µM (R² = 0.991). It suggests that AntR1 may modulate the transcriptional circuitry via cross-regulation, warranting further mechanistic inquiry. The modified biosensor TOP10/pJ23119-antACR1 exhibited high selectivity for As(III) over divalent metals (Cd, Pb, Cu, Hg, Mn, Mg) and tolerated Sb(III) up to 1 µM. Performance was retained in 90% freshwater and 50% seawater matrices, enabling accurate quantification of 0–2.5 µM As(III) in deionized, tap, surface, and marine samples.Conclusion By coupling Sb(III)-specific ant efflux/sequestration components with an ArsR-based sensing module, we developed a portable, low-cost biosensor that overcomes longstanding As(III)/Sb(III) cross-reactivity and performs robustly in complex environmental waters.Graphic abstract
研究领域:
环境生物技术
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合成生物学
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微生物传感器
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毒理学
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分子遗传学
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Yingqing Zhao,Min Li,Guochen Zhang,Ying Li
The extraction of metallic antimony directly from stibnite ore (Sb 2 O 3 and Sb 2 S 3 ) to prepare antimony-based anode for sodium-ion batteries (SIBs) represents a simple and cost-effective approach to advancing energy storage. The direct electrochemical deoxidation of solid Sb 2 O 3 /multiple-wall carbon nanotubes (MWCNTs) to Sb/MWCNTs as anodes for SIBs in deep eutectic solvent (DES) was reported for the first time. Cyclic voltammetry (CV) tests reveal that the electrochemical deoxidation of Sb 2 O 3 /MWCNTs is a single-step process. Using a solid Sb 2 O 3 /MWCNTs disc as cathode, constant voltage electrolysis measurements were carried out to investigate the sodium storage performance of the Sb/MWCNTs composites by varying experimental conditions, which included electrolysis voltage (2.2, 2.4, and 2.6 V), electrolysis duration (2, 4, and 6 h), and different Sb 2 O 3 /MWCNTs ratios (Sb 2 O 3 -1 MWCNTs, Sb 2 O 3 -2 MWCNTs, and Sb 2 O 3 -3 MWCNTs). X-ray diffraction (XRD) analysis confirms that the Sb 2 O 3 /MWCNTs composites can be fully reduced to Sb/MWCNTs, while scanning electron microscope (SEM) results reveal that the particle size decreases as the cell voltage increases. The electrolytic samples of Sb-1 MWCNTs obtained under 2.6 V at 363 K for 6 h deliver excellent sodium-storage performance. The capacity of the Sb-1 MWCNTs composites anode is measured as 574.9 mAh g −1 at a current density of 0.1 A g −1 and as 450.4 mAh g −1 at a current density of 0.5 A g −1 after 200 and 150 cycles, respectively. The direct electrochemical deoxidation method using DES provides a new approach from oxide ore for preparing other alloy-types anode materials for SIBs.
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Materials Today Physics
·
2025
·
IF 9.7
Jisheng Liang,Qi Zhou,Zhengniu Pan,Zhongwei Zhang,Fengting Mao,Shiyuan Zhao,Sijing Zhu,Jun-liang Chen,Jie Gao,Lei Miao
N-type Mg 3 (Sb,Bi) 2 Zintl compounds have emerged as promising candidates for high-temperature energy applications due to their exceptional thermoelectric performance, making them pivotal in the development of sustainable energy technologies. Despite recent advancements, these materials suffer from low carrier mobility caused by polar covalent bonds , which degrade electrical conductivity and overall thermoelectric efficiency. In this study, we introduce beryllium , a bivalent homologous group element, as a cationic dopant to substitute for Mg in Mg 3.2 Sb 1.5 Bi 0.49 Te 0.01 . This substitution weakens the polarity of the chemical bonds, significantly enhancing carrier mobility from ∼62 to ∼138 cm 2 V −1 s −1 . Theoretical analysis using the single parabolic band model confirms that the effective mass decreases with increasing Be doping content. First-principles calculations further reveal that Be doping leads to stronger charge localization due to their higher electronegativity and shifts the Fermi level into the conduction band and narrows the band gap, strengthening the n-type semiconducting properties. This optimization yields an impressive power factor of ∼2022 μW m −1 K −2 at 523 K in Mg 3.12 Be 0.08 Sb 1.5 Bi 0.49 Te 0.01 , owing to the improved carrier mobility . Furthermore, the Be atoms as point defects induces significant lattice distortions and strains, effectively suppressing lattice thermal conductivity to ∼0.38 W m −1 K −1 at 573 K. Consequently, we achieve a remarkable ZT of 1.54 at 673 K and a high average ZT of 1.17 in n-type Mg 3.14 Be 0.06 Sb 1.5 Bi 0.49 Te 0.01 . Our work offers new strategies to enhance the thermoelectric properties of n-type Mg 3 (Sb,Bi) 2 materials, advancing high-temperature sustainable energy technologies.
研究领域:
材料科学
·
热电材料
·
固态化学
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能源材料
·
半导体物理
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