Environmental Science-Nano
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2024
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IF 5.8
Qi Cheng,Qingrui Li,Xiaoqin Li,Weizhen Liu,Zhang Lin,Liyuan Chai
Nanoscale zero-valent iron (nZVI) and modified nZVI have shown great removal capacities towards various heavy metals. However, the aging process of nZVI during the reaction is crucial for the long-term affinity and stability of heavy metals in the environment. In this study, the aging and iron oxide evolution of amorphous nZVI (A-nZVI) and nZVI during the reaction with Sb(III) were investigated and compared. The results indicated that after reacting with Sb(III), iron oxides in A-nZVI were mainly composed of γ-Fe2O3 (33.9%) and γ-FeOOH (29.8%), whereas α-Fe2O3 (24.9%) and α-FeOOH (31.8%) were dominant in the aged nZVI. The removal capacities for Sb(III) of γ-Fe2O3 (69.8 mg g−1) and γ-FeOOH (42.3 mg g−1) were both much higher than those of α-Fe2O3 (4.3 mg g−1) and α-FeOOH (8.4 mg g−1). Sb(III) was partially oxidized during the reaction, and DFT calculation showed that the adsorption energies of both Sb(III) and Sb(V) on γ-Fe2O3 and γ-FeOOH were higher than those on α-Fe2O3 and α-FeOOH. Furthermore, EXAFS analysis revealed that Sb formed an inner-sphere complex with the iron oxides in A-nZVI through the bidentate mononuclear edge-sharing structure (2E). Therefore, A-nZVI showed higher affinity and long-term stability toward Sb(III) remediation.
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DOI
高影响因子
Inorganic and Nano-Metal Chemistry
·
2021
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IF 1.716
Jiahua Guo,Yuqi Zhang,Shouwen Jin,Xiaoyun Ye,Kaikai Hu,Weiqiang Xu,Daqi Wang
Eight organic-inorganic hybrid salts [(HL1)(SbCl4)] (1) (L1 = N,N-dimethylbenzylamine), [(HL2)2(ZnCl4)] (2) (L2 = 4-chlorobenzylamine), [(HL2)(L2)(CuCl3)(H2O)2] (3), [(HL3)2(Sb2OCl6)] (4) (L3 = quinoline), [(HL4)4(Bi2Cl10)] (5) (L4 = 2-methylquinoline), [(HL5)(SbCl4)] (6) (L5 = 5,7-dimethyl-1,8-naphthyridine-2-amine), [(H2L6)(SbCl5)] (7) (L6 = 3,6-bis(imidazol-1-yl)pyridazine) and [(H2L7)2(CuBr4)2] · 7H2O (8) (L7 = di(2-benzimidazol-1-ylethyl)ether) were prepared and characterized by IR, XRD, EA and TG analysis. XRD analysis told that all of the complexes were 3 D net built from non-covalent bonds from the cations and the halometallates. The aryl rings of the cations in all of the compounds are essentially planar. The H2O also had crucial role in structure extension in 3 and 8. Extensive intermolecular interactions have been used in the self-assembly of diverse motifs, ranging from strong N-H···X (X = Br, Cl), N-H···O, N-H···N, O-H···O, O-H···Br H-bonds to weak CH2···O, CH3-Cl/CH2-Cl/CH-Cl, Cl-Cl, O-Br, CH3-π, CH2-π, Cl-π and π-π associations. The arrangements of the anions and cations in the solid are ruled not only by the size and symmetry of the cations, but also by the non-covalent bonds in the crystal structures.
研究领域:
无机化学
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材料科学
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
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IF 6.901
Songjian Deng,Yi Dai,Yue Situ,Defei Liu,Hong Huang
Electrocatalytic oxidation technology and dimensionally stable anodes are widely used in the field of organic dye wastewater treatment . Rational manipulation of microscopic morphology, surface chemistry, and electrode configuration on DSA is of prime importance to enhance its electrochemical performance in the electrocatalytic degradation of organic pollutants . Herein, a novel Ti/SnO 2 -Sb anode with a microsphere structure composed of nanosheet was prepared by the in-situ hydrothermal method . And this electrode was compared with a control sample prepared by the traditional thermal decomposition method in terms of microscopic morphology, chemical structure , and electrochemical performance in the degradation of methylene blue. Benefiting from the nanosheet structure, small grain size, and higher Sb 2 O 5 content, the electrode prepared by the hydrothermal method had a higher Oxygen Evolution Potential (2.09V), a smaller impedance (8.61Ω), and a larger Electrochemical Active Surface Area. And its removal rate of methylene blue reached 100% while the total organic carbon content reduced by 39.20% within 60 min, which is significantly superior to that of traditional thermal decomposition electrodes. This study highlights that the electrode prepared by single-step hydrothermal process shows more excellent catalytic performance than that by the traditional thermal decomposition process and the hydrothermal method has bright application prospects in DSA for electrocatalytic oxidation.
研究领域:
环境科学
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电化学
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DOI
高影响因子
INORGANIC CHEMISTRY
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2021
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IF 5.165
Xiao-Bao Li,Chun-Li Hu,Fang Kong,Jiang-Gao Mao
Two new antimonous phosphates, namely Ba3Sb2(PO4)4 and Cd3Sb2(PO4)4(H2O)2, have been successfully prepared through mild hydrothermal reactions. Ba3Sb2(PO4)4 features a 1D [Sb(PO4)2]3– chain structure separated by Ba2+ cations while Cd3Sb2(PO4)4(H2O)2 presents a 2D [Sb(PO4)2]3– layered structure with Cd2+ located at the interlayer space. The [Sb(PO4)2]3– chain in Ba3Sb2(PO4)4 is the first example of 1D antimonous phosphate structure, and Cd3Sb2(PO4)4(H2O)2 represents the first d10 transition metal antimonous phosphate. Based on UV–vis–NIR spectra, both Ba3Sb2(PO4)4 and Cd3Sb2(PO4)4(H2O)2 can display large optical band gaps (4.30 and 4.36 eV, respectively). But their transparent ranges are quite different because of the coordination water of Cd3Sb2(PO4)4(H2O)2 (500–2000 and 500–1300 nm for Ba and Cd compounds). The anhydrous Ba3Sb2(PO4)4 shows high thermal stability in the nitrogen atmosphere (900 °C). Because of the incorporation of the lone pair cation of Sb(III), the birefringence of Ba3Sb2(PO4)4 and Cd3Sb2(PO4)4(H2O)2 has been enhanced to 0.086 and 0.053 at 532 nm, respectively.
研究领域:
无机化学
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材料科学
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光学材料
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晶体学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2017
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IF 6.216
Zheng Yi,Qigang Han,Xiang Li,Yaoming Wu,Yong Cheng,Limin Wang
Alloying-type Sb material has been considered as an excellent anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). However, the limitation of capacity is still a challenge urging to be solved. Thus, it will be extremely meaningful to exploit novel antimony oxides (Sb 2 O 4 ) as high-capacity anode material for both LIBs and SIBs . In this work, one-dimensional tube-like Sb 2 O 4 submicron-structures are fabricated by a two-step oxidation route, and their lithium and sodium storage behaviors are investigated to be conversion-alloying-type. When evaluated as an anode material with lithium as the counter electrode, the Sb 2 O 4 submicron-structures deliver a discharge capacity of 700 mAh g −1 after 50 cycles at a current density of 100 mA g −1 , which is higher than the alloying-type Sb anode materials with a theoretical capacity of 660 mAh g −1 . Even at a high current density of 1000 mA g −1 , the substantial discharge capacity can still reach 415 mAh g −1 after 100 repeated cycles. In addition, as for SIBs , the tube-like Sb 2 O 4 submicron-structures can maintain a discharge capacity of 381.9 mAh g −1 after 100 cycles at 100 mA g −1 , higher than the reported results at this field. Such excellent cycling stability and rate capability of the designed Sb 2 O 4 submicron-structure can be attributed to the morphology and structure.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
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IF 4.326
Fei Wu,Zheng-Qing Yang,Wen Sun,Xu Chen,Hui Qi,Li-Da Wang
Ti/SnO2-Sb-Ir electrodes doped with a low Ir content were prepared, and they were used in acidic water electrolysis for the oxygen evolution reaction (OER). The results showed that an IrO2–SnO2 solid solution was formed, and the electrode surface was relatively compact. The doping of IrO2 could significantly improve the electrocatalytic activity and stability of Ti/SnO2-Sb electrode for OER. The electrode modified with only 5 mol % Ir met the needs of acidic water electrolysis. Meanwhile, the performances of the electrode approached that of Ti/IrO2 when Ir content was only 8 mol %, which resulted from the fact that IrO2 doping improved the chemical stability as well as the electrocatalytic activity of the electrode. Moreover, the deactivation behavior of the electrode was investigated as well. It was mainly ascribed to the chemical composition and morphology change induced by continuous dissolution of the metal oxides, which eventually led to the passivation of the Ti substrate.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Miao Lu,Siyuan Zhang,Zhongmei Song,Liang Ma,Haining Liu,Ming Fang,Huifang Zhang,Xiushen Ye,Zhijian Wu
Increased levels of octadecylamine (ODA) and 4-dodecylmorpholine (DMP) in the aqueous, primarily utilized as flotation agents in the worldwide production of potash fertilizer, imperil the stability of ecosystems and the downstream production of high-end chemicals. Nevertheless, there is a dearth of exhaustive studies pertaining to the elimination of ODA and DMP. Herein, the Ti/SnO 2 -Sb/β-PbO 2 anode was fabricated by a thermal decomposition-electrodeposition technique for the electrocatalytic degradation of ODA and DMP. The degradation efficiency of ODA and DMP can achieve complete degradation, reaching 100%, after treatment periods of 10 min and 120 min, respectively. Meanwhile, the TOC removal efficiency of ODA and DMP is up to 85% and 61% at 30 min and 120 min, respectively. In particular, sulphate exhibits inhibitory degradation activity of ODA and DMP in comparison to chloride salt. The recycling and accelerated lifetime tests indicate excellent stability and recyclability of the Ti/SnO 2 -Sb/β-PbO 2 electrode. The mechanism of electrocatalytic degradation involves indirect electrochemical oxidation mediated by free radicals. The primary reactive species responsible for the degradation of DMP and ODA, as determined through scavenger quenching experiments and ESR, are ·OH and Cl·. The degradation of the ODA and DMP commences with the elimination of N element, leading to the formation of the N O 3 - . The carbon chain subsequently undergoes the breakdown. The degradation pathways of ODA and DMP were also proposed based on the GC–MS and H-NMR analyses, respectively. Moreover, the Ti/SnO 2 -Sb/β-PbO 2 anode performed excellently in the removal of ODA and DMP in real samples, TOC removal from ODA and DMP in natural samples was 56% and 52%, respectively, within 180 min. This study provides the first exploration of electrocatalytic degradation mechanisms and pathways of ODA and DMP based on the Ti/SnO 2 -Sb/β-PbO 2 anode.
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CHEMOSPHERE
·
2019
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IF 5.108
Kunlun Yang,Yuanli Liu,Yizhou Li,Zhen Cao,Chuchen Zhou,Zheni Wang,Xurui Zhou,Shams Ali Baig,Xinhua Xu
In this study, the selective adsorption performance of different Fe-Mn binary oxides (FMBOs) towards Sb(V) in the textile wastewater under different concentrations of coexisting anions, surfactants and dyes were investigated. Results showed that the influences of different anions on the Sb(V) removal followed an order of phosphate > carbonate > sulfate > nitrate > chloride. The frequently-used organic acid of acetate was found to have insignificant effect. The coexisting surfactant with sulfonic groups could have adverse effect on the removal due to sulfonic groups could compete the adsorptive sites on Fe oxides with Sb(V). While the quaternary ammonium surfactant might have minor effect. The influences of the three widely used dyes on the Sb(V) adsorption decreased in the following order: reactive black-5 >acid orange-7> disperse blue-60, which confirmed that the dyes with sulfonic groups would have relatively higher effect. The selective adsorption capacities of Sb(V) by FMBOs followed an order of FMBO 3 > FMBO 5 >FMBO 10 > FMBO 20 >PFO. Fixed-bed column adsorption supplied useful parameters and evidently indicated that the cyclic utilization of FMBO 3 was cost-efficient for practical dynamic Sb(V) removal. The Sb(V) removal by FMBO 3 from real textile wastewater can simultaneously improve the removal efficiency, stabilize pH and prevent the increase of iron concentration as compared to the traditional coagulation, further demonstrating the high practical applicability of FMBO 3 .
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Weishan Qin,Ting Su,Guodong Chai,Xinhong Wang,Weichao Qin,Hongbin Yu
Photoelectrocatalysis is a promising method for removing biorefractory organic pollutants. However, the inefficient utilization of light and electricity by photoanodes and the failure to effectively execute cathode functions typically lead to poor degradation performance. Therefore, in this study, a photoelectrocatalytic (PEC) system coupled with electro-activated persulfate (E-PS) was constructed using a 3D nanostructured PbO 2 /Sb-SnO 2 //blue-TiO 2 //WO 3 bifacial anode and a Mo-CuFeO 2 -modified carbon felt cathode. The results indicate that the bifacial anode could effectively implement electro-assisted photocatalysis on the irradiating side and electrocatalysis on the back side. This significantly accelerated acetaminophen degradation with a synergy index of 48.98 %. Additionally, the PEC/E-PS system was established by combining a bifacial anode with a persulfate-activated cathode, which promoted the efficient utilization of photogenerated electrons and increased the number of active species in the coupled system. Density functional theory calculations confirmed that Mo tended to dope the Fe sites and promote the adsorption of PS on Mo-CuFeO 2 , facilitating the continuous activation of persulfate. In the coupled system, the contribution order of different active species to acetaminophen degradation was h + > OH > SO 4 − > 1 O 2 > O 2 − . Their mutual conversion enabled the PEC/E-PS system to efficiently remove acetaminophen with a relatively high current efficiency (22.69 %) and low energy consumption (0.06 kWh⋅gCOD −1 ). The proposed PEC/E-PS system is an efficient and sustainable method for treating organic contaminants in wastewater.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xin Li,Jun-Hao Wang,Chen-Yue Yuan,Qi-Wen Sun,Jiang Shao,Xing-Chi Li,Zhao-Lu Feng,Hao Dong,Chen Li,Ya-Wen Zhang
The CO 2 electroreduction reaction using sustainable electricity emerges as a viable strategy to produce high-value-added and profitable chemicals. The achievement of superior activity at a lower overpotential and higher selectivity in a wide potential window is vitally important for large-scale industrial applications. Herein, a carbon-composite amorphous porous BiSbO x nanotube with abundant unsaturated sites is reported to boost the conversion of CO 2 to formate, exhibiting a formate selectivity of >90% in an extremely broad range of potentials from −0.5 to −1.4 V versus reversible hydrogen electrode (RHE) and a maximal energy conversion efficiency of 77.1%. Importantly, pure formic acid solution is directly obtained in a solid-electrolyte cell for industrial-scale applications. The porous tubular structure can expose more catalytic active sites, accelerate the mass transfer, and show fast surface charge transfer. Moreover, the unique coordination-unsaturated Sb-stabilized BiO 8−x site can not only enhance the adsorption and activation of CO 2 but also reasonably balance the stabilization and hydrogenation of *OCHO intermediate, thus leading to its obviously higher catalytic performance. As a result, a novel amorphous porous BiSbO x nanotube is successfully designed for efficient CO 2 electroreduction, which may shed new light on developing many more amorphous composite metal oxide catalysts for conversion of inert small molecules.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Kangpeng Jin,Haonan Nie,Fengxian Gao,Jiang-Jiang Ma,Mingfang Shu,Xi Yan,Zhen-Hua Ge,Xiao Gao,Weiyun Zhao,Ming Liu,Yuan Yu,Jie Ma,Biao Xu,Liangwei Fu
Mg 3 (Sb,Bi) 2 alloys offer exceptional near-room temperature thermoelectric (TE) performance comparable to Bi 2 Te 3 . However, the low carrier mobility due to Mg vacancies and relatively high lattice thermal conductivity adversely affect overall TE performance. Herein, carrier mobility and thermal conductivity of Mg 3 (Sb,Bi) 2 are decoupled by modulating both the phase interface and grain boundaries through incorporating different sizes of iron (Fe). Ferromagnetic micrometer-sized Fe particles enhance the figure of merit ( ZT ) more than superparamagnetic nano-sized counterparts. Magnetic moments of Fe induce the charge density overlap near phase boundaries and ≈1 nm Fe interfacial layer lowers grain-boundary barriers, leading to sharply increased carrier mobility. Moreover, the additional magnon-phonon scattering reduces lattice thermal conductivity by over 40%. Consequently, Fe/Mg 3 (Sb,Bi) 2 composite achieves a high average ZT of 1.4 over room temperature to 573 K. The fabricated Mg 3 (Sb,Bi) 2 -CdSb module demonstrates a high conversion efficiency of 8.4% under a 275 K temperature gradient, among the best for Mg 3 (Sb,Bi) 2 -based modules. This work uncovers the role of thermo-electro-magnetic interactions in bolstering TE performance and inspires the development of low-cost, high-efficiency TE modules for low-grade heat recovery.
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DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Kunlun Yang,Cheng Li,Xiaomin Wang,Yuanli Liu,Yizhou Li,Chuchen Zhou,Zheni Wang,Jiasheng Zhou,Zhen Cao,Xinhua Xu
In this work, the surface properties, functional groups and stability of Fe–Mn bimetal composite (FMBC) was modified through sintering to improve the weaknesses of pristine FMBC, such as poor separation performance, high amount of dissolved Fe and Mn, and easy phase transformation. Characterization analysis indicated that 2-line ferrihydrite in sintered FMBC (SFMC) gradually transformed into hematite with the phase-transition temperature of 450 °C. With the increasing sintering temperature and time, the dehydroxylation reaction enhanced and gradually became irreversible, while the BET surface area and porosity of SFMC firstly increased and then decreased, resulting in the initial increase and then sharp decrease of the amount of exposed hydroxyl groups on SFMC. The sintering treatment greatly improved the separation performance and stability of SFMC. 350 °C and 2 h were determined as the optimal sintering conditions of SFMC in this study and the calculated maximum adsorption capacity of optimal SFMC reached up to 95 mg/g. Freundlich model and pseudo-second-order kinetics model can describe the Sb(V) adsorption data well. As compared to pristine FMBC, optimal SFMC presented larger BET surface area and porosity, better separation performance and stability, lower dissolved Fe and Mn amount, larger cyclic adsorption efficiency and enough ability for Sb(V) removal in real textile wastewater. Furthermore, the inner sphere complexation between Sb(OH) 6 - and exposed hydroxyl groups played a key role in adsorption. Additionally, the NaCl + NaOH elution exhibited greater Sb(V) desorption performance and effectively retarded the phase transformation of SFMC than NaOH solution.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）