INORGANIC CHEMISTRY
·
2014
·
IF 4.794
Chao Huang,Jian-Han Zhang,Chun-Li Hu,Xiang Xu,Fang Kong,Jiang-Gao Mao
Two new boroantimonates, namely, KSbB2O6 and BaSb2B4O12, have been successfully synthesized through high-temperature solid state reactions. Their structures feature two types of novel anionic 3D frameworks composed of 1D chains of corner-sharing SbO6 octahedra that are interconnected by B2O5 groups. The 1D chains of corner-sharing SbO6 octahedra in polar KSbB2O6 (space group Cc) are extended along the c-axis, whereas those in the centrosymmetric BaSb2B4O12 (space group C2/c) are propagated along the [101] direction. The K+ ions are located at the 1D tunnels of the anionic frameworks along both b- and c-axis, whereas Ba2+ ions are located at the 1D tunnels of the anionic frameworks along both the a- and c-axis. KSbB2O6 is a polar material that displays weak SHG response, whereas BaSb2B4O12 is centrosymmetric and not SHG active. Studies on their optical properties, thermal stability, and band structure calculations based on DFT methods have been also performed.
研究领域:
材料科学
·
晶体学
✓ 已验证
DOI
高影响因子
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
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Yonghui Tu,Long-Fei Ren,Yuanxin Lin,H. Susan Zhou,Jiahui Shao,Yiliang He
The traditional adsorbents for antimonate (Sb(V)) in industrial effluent suffered from poor adsorption capacity due to the lack of pores or adsorption sites. Three-dimensional (3D) amidoxime-polyacrylonitrile sphere (APANS) with hierarchical pores and abundant amidoxime groups was fabricated via nanoscale thermally induced phase separation (TIPS). The effects of fabrication parameters including diluent type, PAN concentration and amidoximation time on pore structure were studied with scanning electron microscopy (SEM), mercury intrusion instrument (MIP), fourier transform infrared spectrophotometer (FT-IR) and X-ray photoelectron spectroscopy (XPS). Results showed that APANS fabricated from 2% PAN/DMSO solution and amidoximated for 20 min had coarse surface, numerous mesopores , high porosity (88.5%) and large pore volume (20.5 mL/g). The pore formation mechanism revealed that the hierarchical pores were derived from multiscale DMSO crystals shaped by TIPS. Adsorption kinetics results showed that kinetics data were well fitted by pseudo-second-order model ( R 2 > 0.99) and the mesopores accelerated the adsorption (equilibrium time of 4 h) due to enormous surface excess and group exposure. Adsorption isotherm could be modeled by Freundlich ( R 2 > 0.99) and maximum adsorption capacity was 683.6 mg/g. The adsorption thermodynamics was also investigated, indicating the spontaneous and exothermic adsorption process . APANS exhibited excellent selectivity towards common anions (Cl − , SO 4 2− , NO 3 − and PO 4 3− ) and reliable reusability (preserving 80% capacity after five cycles). This adsorbent provided a clean and sustainable strategy for Sb(V) removal from aqueous environment by superhigh capacity, fast rate and reliable reusability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Zichen Zheng,Kewei Liu,Yiwen Zhou,Kaichun Xu,Marc Debliquy,Chao Zhang
Creating high-performance gas sensors for heptanal detection at room temperature demands the development of sensing materials that incorporate distinct spatial configurations, functional components, and active surfaces. In this study, we employed a straightforward method combining hydrothermal strategy with ultrasonic processing to produce mesoporous graphene quantum dots/bismuth antimonate (GQDs/BiSbO4) with nanorod cluster forms. The BiSbO4 was incorporated with appropriate contents of GQDs resulting in significantly improved attributes such as heightened sensitivity (59.6@30 ppm), a lower threshold for detection (356 ppb), and quicker period for response (40 s). A synergistic mechanism that leverages the inherent advantages of BiSbO4 was proposed, while its distinctive mesoporous hollow cubic structure, the presence of oxygen vacancies, and the catalytic enhancement provided by GQDs lead to a marked improvement in heptanal detection. This work introduces a straightforward and effective method for crafting sophisticated micro–nanostructures that optimize spatial design, functionality, and active mesoporous surfaces, showing great promise for heptanal sensing applications.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Chang Liu,Peipei Hou,Wenxiang Chai,Jiawei Tian,Xuerong Zheng,Yaying Shen,Mingjia Zhi,Chunmei Zhou,Yi Liu
Two isostructural quaternary chalcogenidoantimonates(III) BaCuSbQ 3 (Q = S, Se): BaCuSbS 3 ( 1 ) and BaCuSbSe 3 ( 2 ) have been successfully synthesized through a facile hydrazine-hydrothermal method. Both two compounds crystallize in the orthorhombic space group and feature a three-dimensional (3D) channeled [Cu 2 Sb 2 Q 6 ] 4- framework, which is constructed by the distorted tetrahedral CuQ 4 and pyramid SbQ 3 units via vertex sharing. Both optical properties and theoretical studies show 1 and 2 are semiconductors with narrow band gaps. In addition, their photoelectrochemical properties have been investigated.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 18
·4602-4607
·
IF 7.779
Meng Zhao,Shengqiang Liu,Hao Cai,Fangyi Zhao,Zhen Song,Quanlin Liu
Near-infrared (NIR) light devices have great potential in non-destructive testing and biomedicine fields. However, the lack of stable and efficient long wavelength NIR phosphors hinders their development. In this work, utilizing the compositional flexibility of antimonate double perovskites, we realized efficient and tunable broadband NIR emissions based on A2MSbO6:Cr3+ materials (A = Ca, Sr, and Ba; M = Ga, In, Sc, and Y). The NIR emission peaks ranged from 825 to 1010 nm by a composition modulation. In particular, Ca2ScSbO6:Cr3+ exhibits an 850 nm-centering broadband NIR emission with an internal quantum efficiency of 84.5% and a high thermal quenching temperature, retaining ∼71% at 410 K of the initial intensity at 80 K. Comparatively, Sr2InSbO6:Cr3+ with a 920 nm-centering broadband emission has 63.2% internal quantum efficiency. This work could help in discovering novel NIR phosphors with long-wavelength emissions and high efficiency.
研究领域:
生物医学工程
·
材料科学
·
光学成像
·
无损检测
·
分子探针开发
✓ 已验证
DOI
高影响因子
SOLID STATE SCIENCES
·
2015
·
IF 1.839
Xiao Zhao,Dajiang Mei,Jingli Xu,Yuandong Wu
The reactions of A 2 SO 4 ( A = K, Cs) and Sb 2 O 3 with H 2 SO 4 (98%) yielded single crystals of A Sb(SO 4 ) 2 ( A = K, Cs). The crystal structures were investigated by single crystal X-ray diffraction. KSb(SO 4 ) 2 crystallizes in the monoclinic space group P 2 1 / c (No. 14) with lattice parameters a = 10.6745(18), b = 7.1579(12), c = 8.7597(15) Å, β = 91.466(3) ° , V = 669.1(2) Å 3 , Z = 4. CsSb(SO 4 ) 2 crystallizes in the orthorhombic space group P 2 1 2 1 2 1 (No.19) with lattice parameters of a = 5.2429(8), b = 9.5942(16), c = 14.850(2) Å, V = 746.98(20) Å 3 , Z = 4. Both compounds show the Sb 3+ cations in same seesaw-type coordination of oxygen atoms from different SO 4 2 − anions, but exhibit complex two-dimensionally and one-dimensionally linked anionic structures. The alkali cations are located between the layers or chains. The compounds were characterized with FT-IR spectra and solid state UV–vis–NIR diffuse reflectance spectroscopy . The band gaps were estimated at 4.64 eV for KSb(SO 4 ) 2 and 4.68 eV for CsSb(SO 4 ) 2 .
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2025
·Vol. 15
·期 7
·815
·
IF 2.5
Feng Jiang,Pengyuan Wang,Jiaxing Qi,Wei Sun,Yulin Zhou,Weishang Zhao,Shuai He,Yuanjia Luo,Honghu Tang
The efficient separation of antimonate minerals from quartz remains a significant challenge in mineral processing due to their similar surface properties and strong hydrophilicity. This study explored the application of sodium dodecyl sulfonate (SDS) as a selective collector for antimonate–quartz flotation separation. Micro-flotation tests demonstrated that SDS achieved optimal recovery of antimonate minerals (90.25%) at pH 8 with a dosage of 70 mg/L, while quartz recovery remained below 10%. Contact angle measurements revealed a significant increase in the hydrophobicity of antimonate minerals after SDS treatment, whereas quartz remained highly hydrophilic. FTIR and XPS analyses confirmed the selective chemisorption of SDS on antimonate mineral surfaces through Sb-O-S bond formation, while negligible adsorption occurred on quartz. Adsorption isotherms further showed the higher SDS uptake on antimonate minerals compared to quartz. These findings collectively demonstrate the effectiveness of SDS as a selective collector for the flotation of antimonate minerals, providing a promising approach to enhancing the recovery of fine antimonate particles.
研究领域:
矿物加工
·
表面化学
·
浮选化学
·
资源回收
·
胶体与界面科学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 51
·期 2
·608-617
·
IF 4.39
Tingting Deng,Shuai Zhang,Rongfu Zhou,Ting Yu,Ming Wu,Xueliang Zhang,Konglan Chen,Yayun Zhou
Non-equivalent or non-octahedral substitution is a crucial strategy to gain Mn4+-doped fluoride red phosphors with a short fluorescence lifetime, whereas the impact of their structural defects on the photoluminescence (PL) properties remains unrevealed. Here, a non-equivalently doped RbSbF6:Mn4+ (RSFM) with a high quantum efficiency of 88% and a thermal stability of 121% at 425 K is newly reported to probe the defect-related PL behavior. Formation energy calculations imply that an interstitial defect was formed to balance the charge and stabilize the crystal structure. Concentration-dependent decay studies reveal that Mn4+ emission is quenched mainly by energy transfer to a neighboring defect . The large ionic radius of Sb5+ and defect leading to a premature optimal doping (0.11 mol%) is demonstrated by the refined contrast of the crystal structure and substitution mode among various Mn4+-doped prototypes. A couple of medium 4T2 state energies and the energy difference between the Mn4+ level with the valence band maximum enable its superior thermal stability. A higher defect concentration slightly aggravates this thermal quenching. Using the RSFM red phosphor in a white light-emitting diode offers a wide-color-gamut of 121% NTSC for backlight displays. This work would provide a new perspective to understand the defect effect on the PL behavior of special Mn4+ asymmetrically doped fluorides.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2016
·Vol. 18
·期 9
·1655-1664
·
IF 3.849
Dong Yan,Chun-Li Hu,Jiang-Gao Mao
Four new alkali metal boroantimonates, namely, A2SbB3O8 (A = Na, K, Rb) and β-RbSbB2O6, have been synthesized by high-temperature solid-state reactions. Isostructural A2SbB3O8 (A = Na, K, Rb) crystallizes in the monoclinic space group P21/c, with structures featuring a novel 3D anionic framework composed of SbO6 octahedra and linear B3O8 groups with 1D tunnels of Sb4B4 8-membered-rings (MRs) along the a-axis, which are filled by alkali metal ions. β-RbSbB2O6 crystallizes in the polar space group Cc, revealing novel 3D anionic networks composed of SbO6 octahedra chains and B2O5 groups with 1D tunnels of Sb4B2 6-MRs along the b-axis and 1D tunnels of Sb3B4 7-MRs along the c-axis. Studies on their optical properties and thermal stability, band structure calculations based on DFT methods and linear optical calculations have also been performed.
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 17
·6908-6917
·
IF 4.569
Xuexia Chen,Ran Pang,Shangwei Wang,Jiangyue Su,Weihong Yuan,Shengjian Jiao,Haiyan Wu,Da Li,Chengyu Li,Hongjie Zhang
Bi3+ has gained increasing attention due to its abundant reserves, adjustable luminous colour and high chemical stability, therefore, Bi3+-activated luminescent materials have already been extensively applied in various fields. Herein, a novel blue-emitting CaNaSb2O6F:Bi3+ (CNSOF:Bi3+) phosphor with a pyrochlore-type structure with the space group Fdm (277) was successfully synthesized. It exhibits a broad absorption band in the n-UV region (290–390 nm) and an ideal blue emission band centered at 441 nm. Interestingly, the wide emission peak of CNSOF:Bi3+ shows strongly temperature-dependent fluorescence properties and good thermal degradation resistance in the cycle temperature range from 298 K to 473 K, and the relative sensitivity is calculated to reach the maximum value of 2.34% K−1 at 423 K. Besides, the phosphor is different from a traditional optical temperature sensing material which shows the emission peak of trivalent rare earth ions. The wide emission peak makes the instrument insensitive to the peak shift, which dramatically reduces the requirement of the instrument, and the emission peak does not shift with the temperature to enhance the measurement stability, thus saving the cost. These results indicate that the CNSOF:Bi3+ blue emitting phosphor has potential applications in temperature sensing.
研究领域:
材料科学
·
无机化学
·
光电子学
·
功能材料
·
传感器技术
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Fangfang Liu,Mengnan Lu,Xiao Yang,Yuedi Wang,Chunmei Wang,Xiaomin Dou
This work proposed introducing nanoscale Fe-Zr oxides onto the layered-surfaces of MXene carriers to maintain well dispersion and anchoring stabilization. The results indicated that Fe-Zr oxide/MXene has a superior adsorption capacity of 209.1 mg/g at pH 7.0. The mass transfer of antimonite onto Fe-Zr oxide/MXene was investigated by numerical solving the homogeneous surface diffusion model. The external mass transfer coefficient ( k f ) and surface diffusion coefficient ( D S ) were determined to be 6.48 × 10 −4 and 1.86 × 10 −8 cm/min, respectively, and the latter was rate-limited. The 2-D profiles of Sb(III) diffusion within the adsorbents were visualized. Data mining and knowledge discovery using machine learning models indicated that the gradient boosting regression (GBR) model successfully predicted the test datasets. The operational conditions outweigh adsorbent properties in capacity prediction, and equilibrium concentration and adsorbent dose, are the most two important features. Using the trained GBR model, the Sb(III) adsorption capacities of MXene (Ti 3 C 2 ) and Fe-Zr/MXene were well predicted. This work provides insights on understanding the mass transfer mechanisms of Sb(III) in functionalized-MXene adsorbents and employing machine learning models for tuning the treatments for better achievements.
研究领域:
环境科学
·
材料科学
·
化学工程
·
数据科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）