JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Min Li,Weiqi Wang,Mengxiaojun Wu,Jingwen Lei,Xiaolu Lu,Hongmei Wang
In this study Paraccocus versutus XT0.6 was employed to address the mechanism of microbial dissolution and oxidation of stibnite. Results showed that with the growth of XT0.6, pH increased to 9.0 in both microbe-mineral contact (MM) and microbe-mineral non-contact groups (M[M]). Dissolved Sb(III) was released from stibnite, which was subsequently quickly oxidized to Sb(V) completely in MM and partially in M[M] groups. On the contrast, the final pH decreased to 6.5 and 4.9, respectviely, in system amended with extracellular secretion (EM) of XT0.6 and abiotic groups. Dissolution of stibnite and oxidation of Sb(III) were also observed in EM group, suggesting a potential contribution of extracellular enzyme in Sb(III) oxidation. The dissolution and oxidation rates were the highest in MM group, followed by those in M[M], EM and abiotic groups. To be noted, Sb(V) concentration decreased in MM group on the fifth day, which might indicate the formation of Sb(V)-bearing secondary mineral. Genome of XT0.6 consisted of two chromosomes and one plasmid, and most genes responsible for antimony oxidation and antimony resistance were located on the chromosomes. Proteomics analysis of the extracellular secretions indicated the up-regulated proteins were mainly related to electron-transfer, suggesting their potential role in Sb(III) oxidation.
研究领域:
微生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Wei Chen,Ze Lin,Zhenxian Chen,Xiulan Weng,Gary Owens,Zuliang Chen
Antimony (Sb) contamination is a significant environmental issue in mining impacted areas, where the use of nanomaterials to remove such metalloid species has attracted much research attention. In this study, the simultaneous removal of Sb(III) and Sb(V) was investigated using a reduced graphene oxide/Fe/Ni (rGO-Fe/Ni NPs) composite. Compared to rGO alone the composite exhibited enhanced removal efficiency. For rGO-Fe/Ni NPs the maximum Sb(III) and Sb(V) adsorption capacities were 2.00 and 1.41 mg·g −1 , respectively, compared to 1.70 and 1.02 mg·g −1 for Sb(III) and Sb(V), respectively, when using rGO only. This indicated that Fe/Ni enhanced the simultaneous removal of Sb(III) and Sb(V). Advanced characterization via SEM and XPS before and after exposure to Sb indicated that both Sb(III) and Sb(V) were adsorbed on to the surface of rGO-Fe/Ni NPs, followed by oxidation of Sb(III) to Sb(V). Adsorption and oxidation kinetics both conformed to pseudo-second order models, where the mechanism for the simultaneous removal of Sb(III) and Sb(V) by rGO-Fe/Ni NPs involved a combination of both adsorption and oxidation. Moreover, the practical adsorption capacity of rGO-Fe/Ni was not limited to Sb, since in a real mining wastewater; containing a mixture of metal(loid)s, while rGO-Fe/Ni exhibited a Sb adsorption capacity of 1.59 mg·g −1 , it also exhibited similar adsorption capacities for As (2.61 mg·g −1 ), Pb (2.41 mg·g −1 ), and Cd (1.25 mg·g −1 ). The composite was also highly reusable with a removal efficiency for Sb(III) as high as 72.7% after 4 cycles of use. Thus, rGO-Fe/Ni NPs has significant potential for the practical removal of Sb species and other heavy metal(loid)s in mining impacted wastewaters.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Rong-Rong Su,Yu-Xiang Yu,Yong-Hao Xiao,XianFeng Yang,Wei-De Zhang
CuSbS 2 is regarded as a promising photo-absorber for solar energy conversion due to its proper bandgap, high absorptivity and earth abundance. Herein, novel low-cost ZnO/CdS/CuSbS 2 core-shell nanowire arrays were constructed as photoanode for hydrogen evolution through non-aqueous electrodeposition and cation exchange. The nanowire demonstrates even and compact multilayer structure. The optimal ZnO/CdS/CuSbS 2 photoanode achieves a photocurrent of 6.48 mA/cm 2 at 0 V versus Ag/AgCl and the remarkable IPCE value with approximately 52% at 480 nm in an electrolyte solution containing 0.35 mol/L Na 2 SO 3 and 0.25 mol/L Na 2 S. It also exhibited a good stability, maintained 87.9% of the initial current after 1 h measurement. The high performance benefits from well-crystalline and compact multilayer structure, high absorptivity of CuSbS 2 and CdS, p-n junction formed between CdS and CuSbS 2 which promotes the electron-hole separation and ZnO nanowire array as three dimensional scaffolds for electron percolation pathway. This work suggests the potential applications of low-cost p-n junction core-shell nanowire arrays as a highly efficient photoanode for hydrogen evolution in oil-field waste water with reductive sulfide.
研究领域:
材料科学
·
能源转换
·
光电化学
✓ 已验证
DOI
高影响因子
Cell Reports Physical Science
·
2020
·
IF 0
Yi Han,Wenwen Cai,Xueke Wu,Wenjing Qi,Bin Li,Hongdong Li,Dan Zhang,Yue Pan,Zuochao Wang,Jianping Lai,Lei Wang
To date, the development of the nitrogen reduction reaction (NRR) electrocatalysts to achieve high ammonia production at low overpotentials is insufficient. Here, Sb 2 Te 3 displays notable electrochemical NRR performance at 0 V (versus RHE), with an ammonia yield rate of 13.8 μg h −1 cm −2 and a faradic efficiency of 27.7% (the highest yield rate at low overpotentials reported, to the best of our knowledge). Sb 2 Te 3 is also stable over 50 h. Density functional theory (DFT) calculations disclose that there are multiple promoted-synergetic effects in telluride. Tellurium sites can modulate the electronic structure of catalysts to drive nitrogen adsorption on antimony sites. Tellurium sites also allow surface hydrogenation to suppress hydrogen evolution, facilitate the reduction of nitrogen into ∗NNH (the rate-determining step) in NRR, and accelerate the desorption of NH 3 . The other tellurides (CoTe 2 , CdTe, and Bi 3 Te 4 ) also show high NRR performance at low overpotentials, implying that such multiple promoted-synergism may be generalized.
研究领域:
材料科学
·
化学工程
·
理论计算
✓ 已验证
DOI
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 14
·16484-16495
·
IF 3.056
He Xingyu,Min Xiaobo,Peng Tianyu,Ke Yong,Zhao Feiping,Sillanpää Mika,Wang Yunyan
Ball-milling is considered as an economical and simple technology to produce novel engineered materials. The ball-milled microscale zero valent iron/pyrite composite (BM-ZVI/FeS 2 ) had been synthesized through ball-milling technology and applied for highly efficient sequestration of antimonate (Sb(V)) in aqueous solution. BM-ZVI/FeS 2 exhibited good Sb(V) removal efficiency (≥ 99.18%) at initial concentration less than 100 mg Sb(V)/L. Compared to ball-milled zero valent iron (ZVI) and pyrite (FeS 2 ), BM-ZVI/FeS 2 exhibited extremely higher removal efficiency due to the good synergistic adsorption effect. BM-ZVI/FeS 2 showed efficient removal performance at broad pH (2.6–10.6). Moreover, the coexisting anions had negligible inhibition influence on the Sb(V) removal. The antimony mine wastewater can be efficiently remediated by BM-ZVI/FeS 2 , and the residual Sb(V) concentrations (< 0.96 μg/L) can meet the mandatory discharge limit in drinking water (5 μg Sb/L). Experimental and model results demonstrated that endothermic reaction and chemisorption were involved in Sb(V) removal by BM-ZVI/FeS 2 . The XRD and XPS analyses confirmed that the complete corrosion of ZVI occurred on BM-ZVI/FeS 2 after Sb(V) adsorption, resulting in the enhanced Sb(V) sequestration. Mechanism analyses showed that the excellent removal performance of BM-ZVI/FeS 2 was ascribed to the high coverage of iron (hydr)oxide oxidized from ZVI. Because of the advantages of economical cost, high Sb(V) removal capacity and easy availability, BM-ZVI/FeS 2 offers a promising adsorbent for Sb(V) remediation.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 38
·14545-14550
·
IF 4.569
Alimujiang Yalikun,Kewang Zhang,Jian Han,Zhihua Yang
Enhancement of birefringence is significant since the birefringent materials can create and control polarized light and be used extensively in various advanced optical systems. By optimizing the arrangement of [SbS3] units with stereo-chemical active lone pair electrons, a new quaternary thioantimonate LiSrSbS3 with a large birefringence has been successfully synthesized by a high temperature solid-state reaction method. LiSrSbS3 crystallizes in the monoclinic space group of P21/c. In the structure, the isolated infinite [LiS4] chains and zigzag [SrS6] chains are alternately connected with each other to compose a three-dimensional (3D) framework, and the isolated pyramid [SbS3] units are located between them. To analyze the source of large birefringence, the electronic structure and optical properties of LiSrSbS3 were further investigated by the first-principles method, and the results show that the optimized arrangement [SbS3] trigonal pyramid induces a large birefringence.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 108
·期 4
·e20286
·
IF 3.5
Shu Li,Wenjie Wei,Guangyu Wang,Zemeng Weng,Boya Zhang,Zhanmin Cao
The phase equilibria information of the CaO–SbO x system in the range of 700–1580°C in air was obtained for the first time using quenching method and thermal analysis. The equilibrium phase compositions were determined using x-ray diffraction and Scanning Electron Microscopy-Energy Dispersion Spectrum. The invariant reaction temperatures were determined using thermogravimetry-differential scanning calorimetry. A perovskite solid solution between Ca 2 Sb 2 O 7 and CaO, designated as (Ca 6 Sb 2 O 11 ) s.s , was observed. Within this solid solution, three polymorphic forms were identified: orthorhombic, tetragonal, and cubic. The transition temperatures between these polymorphic forms vary with compositional changes. Additionally, the crystal structure of cubic Ca 6 Sb 2 O 11 was analyzed. CaSb 2 O 6 was observed to decompose into Ca 2 Sb 2 O 7 , Sb 4 O 6 , and O 2 above 1336 ± 5°C. The eutectic temperature of α-Sb 2 O 4 and CaSb 2 O 6 was found to be 1220 ± 5°C.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Yingjie Mao,Zhichao Zhang,Guojun Zhou,Chen Fang,Yihan Liu,Denghui Xu,Jia Zhao,Aicong Geng,Jun Zhou
Zero-dimensional (0D) Mn(II)-based hybrids with the typical d–d transitions have been rapidly developed benefitting from the environmental friendliness, blue light excitation and the high thermal stability. Herein, we first designed two novel green-emitting 0D Mn(II)-based hybrids (C 16 H 28 N) 2 MnCl 4 and (C 21 H 46 N) 2 MnCl 4 , where the organic cations cocrystallize with four-coordinated [MnCl 4 ] 2- tetrahedrons. Upon blue-light excitation, these two crystals exhibited narrow-band green emission with distinct emission intensity and FWHM as well as thermal quenching behavior, which is analyzed by the influence of the crystal structure of different organic cations on the luminescence performance. Furthermore, multiple emission color can be observed from green to orange-red in (C 16 H 28 N) 2 MnCl 4 :Sb 3+ by regulating the [SbCl 5 ] 2- /[MnCl 4 ] 2- molar ratio or excitation wavelength. Our study not only enriches the influence of organic cations on crystal structure and luminescence performance, but also provides a new direction towards realizing the multi-color emission by Sb 3+ ions doping strategy.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Peiran Xie,Pan Wang,Jiaqian Zhou,Zhu Guo,Lingling Mao
0D organic–inorganic antimony halides have attracted increasing attention due to the non-toxicity, high stability, and superior photoluminescence quantum yield (PLQY). Here, a series of hybrid antimony chlorides with the same organic cation ethyltriphenylphosphonium (Ph 3 EtP + ), including non-emissive (Ph 3 EtP) 2 Sb 2 Cl 8 and nine (Ph 3 EtP) 2 SbCl 5 -based emissive compounds, are synthesized and characterized. These emissive compounds are namely, the guest-free (Ph 3 EtP) 2 SbCl 5 and (Ph 3 EtP) 2 SbCl 5 ·guest (guest = glycol, acetic acid, methanol, ethanol, n-propanol, i-propanol, acetone, and acetonitrile). The solvent used can alter the coordination mode of Sb because the solvation effect affects the reactivity of the anions ([SbCl 4 ] − and Cl − ), leading to the formation of either A 2 Sb 2 Cl 8 or A 2 SbCl 5 . The solvents can be even incorporated into the crystal structure, where stronger interaction with [SbCl 5 ] 2− leads to higher temperature of the escape of the solvent. The guest molecules could increase the structural rigidity of [SbCl 5 ] 2− via hydrogen bonding and dipole–dipole interactions, which tends to reduce the room-temperature photoluminescence (PL) Stokes shift and temperature-dependent PL shift by decreasing the [SbCl 5 ] 2− deformability, along with enhanced PLQY from 81% in guest-free to near-unity in (Ph 3 EtP) 2 SbCl 5 ·glycol. This work shows that targeted synthesis and diversified choices of solvents provide an efficient tool to generate steady variations in hybrid emissive materials for optoelectronics.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yaxiong Zeng,Wenxiang Liu,Xueni Huang,Xiaotian Yang,Beimeng Qi,Jie Yu,Hailu Fu
Heavy metal–organic compound complexes are commonly found in textile dye wastewater, seriously threatening human health. This work proposes a unique integrated electrocoagulation and electro-Fenton (EC-EF) system combining an Fe anode and a carbon-felt-loaded hydroxylated carbon nanotubes (CNTs-OH/CF) cathode for the simultaneous removal of aniline and Sb(V) from wastewater. Under optimal conditions of initial pH of 3.0, NaCl concentration of 0.15 mol/L, and current density of 30 A m −2 , the EC-EF system removed almost 100 % of aniline in 40 min and of Sb(V) in 10 min, with an energy consumption equal to 2.01 KWh kg −1 . The excellent performance derived from the usage of the CNTs-OH/CF cathode increased the number of active sites, hydrophobicity, and electrical conductivity, facilitating the oxygen reduction reaction and electron transfer, thus enhancing the in situ-produced hydrogen peroxide (H 2 O 2 ) with a concentration of 644.53 mg L −1 , exceeding most reported values. Furthermore, hydroxyl radicals (•OH), the dominant active species generated through the reactions of Fe 2+ with electro generated H 2 O 2 , promoted the degradation of aniline. Meanwhile, Sb(V) was adsorbed by the ferric hydroxide formed at the anode and finally co-precipitated. The excellent reusability after five cycles and outstanding catalytic activity towards real wastewater demonstrate the superiority of the developed system for treating wastewater in practical applications. This study presents a unique integrated technology and a theoretical foundation for the simultaneous removal of heavy metal–organic compound complexes from wastewater.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Zhe Wang,Zhengpeng Zhu,Kai Xue,Xingmei Guo,Yuanjun Liu,Xiangjun Zheng,Qianqian Fan,Zhongyao Duan,Qinghong Kong,Junhao Zhang
To solve the serious volume expansion problem of Sb-based anode materials in the alloying/dealloying process, a strategy combining electrospinning and hydrogen reduction is proposed to prepare a series of Sb-based alloys/carbon nanofiber composites (SbM/CNFs, M=Co, Zn, Ni). Inactive elements are innovatively introduced to form Sb based alloys with enhanced stability. The results show that the content of SbCo nanoparticles is high to 69.12% (mass), which are uniformly dispersed in carbon fibers. When evaluated as anode material for SIBs, SbCo/CNFs anode exhibits excellent sodium storage capacity, the initial discharge capacity is 580.0 mA·h·g −1 at 0.1 A·g −1 , which can hold 483.5 mA·h·g −1 after 100 cycles. Even the current density increases to 1.0 A·g −1 , the specific capacity still maintains at 344.5 mA·h·g −1 after 150 cycles. The improved sodium storage capacity is attributed to the synergistic effect of conductive carbon fibers and SbCo nanoparticles with uniform dispersion, which not only provide excellent electronic conductivity, but also enhance structural stability to reduce volume change.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-13
·
IF 3.8
Bu Daolu,Yang Hu,Zhang Haibo,Wang Liang,Wang Jiao,Liao Jie
The present study investigates the efficacy of newly developed Zr-based metal–organic frameworks, specifically MIP-206, and its amine-modified counterpart, MIP-206-NH 2 , for the re-covery of antimony (Sb) from both synthetic and actual mining wastewater. Batch method studies were employed to examine the effect of waste media pH, Sb concentration, process kinetics, and the performance of the regeneration solution. MIP-206-NH 2 exhibited impressive separation capabilities, achieving 102.18 mg/g and 63.23 mg/g for Sb (V) and Sb (III), respectively. In contrast, the pristine MIP-206 reached maximum values of 26.26 mg/g for Sb (V) and 16.95 mg/g for Sb (III). The separation process was well-described by the Langmuir equation, and the kinetics followed the pseudo-second-order model. Although the amine modification resulted in a decrease in the surface area of MIP-206 from 1345.21 to 1169.86 m 2 /g, SEM and XRD analyses confirmed that the structural integrity of MIP-206-NH 2 remained unchanged. In terms of reusability, MIP-206-NH 2 maintained up to 90% of its separation performance over 9 cycles, while MIP-206 demonstrated effectiveness for 7 cycles. The regeneration solution exhibited a capacity of approximately 0.63 mol/L for Sb (V) and 0.71 mol/L for Sb (III). Furthermore, MIP-206 and MIP-206-NH 2 demonstrated successful application in selectively separating Sb from real mining wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）