MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 5.2
Xiangqian Ren,Lianyan Zhu,Bin Guo,Wenting Liu,Shuang Yu,Xingfu Zhou
Ti/TiO 2 NTs/SnO 2 –Sb–Mo anode was prepared by adding intermediate layers and elemental doping and GF/Cu–C 3 N 4 cathode was prepared by impregnation method. The electrode was characterized by SEM, XRD, LSV, CV, and EIS, which show that a more uniform and finer-grained surface structure with higher electrocatalytic activity can be prepared by doping and the addition of TiO 2 -NTs interlayer. In addition, the cathode demonstrate the successful loading of Cu–C 3 N 4 on graphite felts (GFs) by SEM and EDS. The electrochemical test shows the high electrochemical activity. The high activity of the two-electrode system was verified according to the hydroxyl radical test, and then the two electrodes were applied to the degradation of 50 mg/L methylene blue wastewater at the same time, and the results showed that the degradation rate was 98.09% in 20 min, and the COD removal was as high as 80.11%, which is 1.33 times and 2.83 times of the single-anode and single-cathode systems, respectively. In addition, the system could show excellent degradation performance in a wide pH range. At the same time, the energy consumption of the two-electrode system is only 110.9 KWh/Kg. Finally, after ten consecutive decolorization experiments, the decolorization rate of methylene blue and the removal rate of COD could still reach 90.5% and 68.7% in 20 min, which indicated that the dual-electrode system had excellent reusability. The study opens a door to the practical application of electrochemical treatment of wastewater.
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高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 43
·23319-23329
·
IF 11.9
Bang-Zhou Tian,Yi-Yan Liao,Fang Xu,Xiao-Ling Qiu,Fu-Jie Zhang,Ran Ang
Interfacial modulation has been considered an effective strategy to enhance the thermoelectric (TE) performance by decoupling thermal and electrical parameters. However, inappropriate interfacial heterojunctions can significantly deteriorate electrical transport while enhancing phonon scattering, which causes no substantial improvement in TE performance. Herein, we introduce two-dimensional graphene or MXene into the Mg3.2Sb0.5Bi1.49Te0.01 matrix by ball mixing combined with rapid sintering to modify the composition and structure at the interface. The differences in morphology, size and distribution of interfacial graphene and MXene lead to distinct results which show that incorporated graphene flakes with larger size hinder the carrier transport, while the homogeneously dispersed tiny MXene provides improved carrier channels and boosts the mobility. On the other hand, such uniformly diffused heterogeneous MXene structures create stronger scattering on phonons compared to enriched graphene phases, resulting in a low lattice thermal conductivity of ∼0.66 W m−1 K−1 and enhanced zT of ∼1.0 at 513 K in Mg3.2Sb0.5Bi1.49Te0.01-0.6 wt% MXene with good component stability in air. This work highlights the importance of size, concentration, and distribution in the interfacial modulation strategy, demonstrating an effective method for developing high TE performance Mg3(Sb, Bi)2-based near-room-temperature materials.
研究领域:
材料科学
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凝聚态物理
·
纳米材料
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能源材料
·
固体化学
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Huiping Zeng,Jiongru Liang,Zhanguo Li,Jie Zhang,Dong Li
Antimony, a toxic metalloid posing ecological and human health risks, remains difficult to remove efficiently from aquatic environments, particularly under acidic conditions. In this study, fly ash-based geopolymers were employed as the matrix, and a series of iron sludge-modified composite adsorbents were prepared by incorporating different proportions of iron sludge. Their adsorption performance toward Sb(V) and applicability in acidic wastewater were systematically evaluated. With increasing iron sludge content, the Sb(V) removal efficiency improved from 67% to 94%. Among the composites, the material with a fly ash-to-iron sludge mass ratio of 4:1 exhibited the best overall performance in terms of adsorption capacity, kinetic response, and applicability under acidic conditions. Characterization results revealed that Sb adsorption was governed not only by coordination with surface Fe active sites but also by localized acid-induced corrosion and reconstruction of Si-O-Al bonds within the geopolymer framework, accompanied by the formation of a new Sb-doped sillimanite phase, indicating distinctive structural evolution during adsorption. The adsorption kinetics were well described by the Elovich model, suggesting heterogeneous surface energy distribution, while intraparticle diffusion analysis suggested that iron sludge incorporation facilitated Sb(V) mass transfer and improved access to internal adsorption sites. The isotherm data fitted the Sips model best, and the maximum adsorption capacity of IS-FAGF 4:1 reached 74 mg/g, representing a 23.3% increase compared with the pristine geopolymer. Lower pH favored Sb removal, and iron sludge modification broadened the effective working pH range. The increase in final pH observed after adsorption suggests a pH adjustment effect under acidic conditions, which is likely related to the release of alkaline species from the geopolymer matrix. Although phosphate exerted competitive effects, the composite still maintained relatively stable Sb(V) removal, indicating favorable anti-interference performance under acidic conditions. Regeneration experiments further confirmed the good cyclic stability of the composite. Overall, this study elucidates the synergistic multi-mechanism adsorption behavior of Sb(V) on iron sludge-fly ash geopolymers, providing theoretical support for the design of geopolymer-based composite adsorbents and the treatment of acidic Sb-containing wastewater.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Xiangjuan Ma,Yan Yan,Qizhou Dai,Jianxian Gao,Shengjue Liu,Yijing Xia
This study focused on the electrochemical oxidation of Acid Blue 9 (AB 9) under direct and pulse current modes using a Ti/SnO 2 -Sb/α,β-Polytetrafluoroethylene-Fe-PbO 2 (PTFE-Fe-PbO 2 ) anode. The results showed that 99.0% of AB 9 and 68.9% of COD could be eliminated at initial pH of 5, initial AB 9 concentration of 100 mg L -1 , pulse frequency of 4000 Hz, current density of 20 mA cm −2 and pulse duty cycle of 50% after 120 min of electrolysis. The pulse electrochemical oxidation of AB 9 at the investigated conditions followed pseudo-first-order kinetics. Compared with the direct current mode, 76.0% of energy consumption could be saved at pulse current mode. The effect of mass transfer and electrode distance on the pulse electrochemical oxidation of AB 9 was also investigated in terms of mass transfer coefficient and effectiveness factor, the results showed that the reduced electrode distance was beneficial to improve the mass transfer and oxidation efficiency, as well as the energy efficiency. LC-MS analysis revealed that benzenesulfonate group, C-N and C-S bonds in AB 9 molecule were initially cleaved under the attack of ⋅OH, then some carboxylic acids were formed and eventually mineralized to CO 2 and H 2 O. Therefore, pulse electrochemical oxidation with a PTFE-Fe-PbO 2 electrode might be a promising alternative to enhance the practicability of electrochemical treatment for dye wastewater.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Muge Shele,Fei-Yan Qi,Xin-Yu Tian,Yong-Sheng Bao,Menghe Baiyin
Three organic-decorated quaternary TM-Cd-Sb-Se (TM = Zn, Mn, Fe) compounds were prepared under tris (2-aminoethyl) amine conditions by solvent method, namely, [Zn(tren)] 2 CdSb 2 Se 6 ( 1 ), [Mn(tren)]CdSb 2 Se 5 ( 2 ) and [Fe(tren)]Cd 2 SbSe 5 ( 3 ) [tren = tris (2-aminoethyl) amine)]. The single-crystal X-ray diffraction analyses showed that the three compounds structures were 0-D {[Zn(tren)] 2 CdSb 2 Se 6 } ( 1 ) cluster, 1-D {[Mn(tren)]CdSb 2 Se 5 } ( 2 ) ribbon and 2-D {[Fe(tren)]Cd 2 SbSe 5 } ( 3 ) layered. A series of characterizations of these compounds were performed, as estimated from the adsorption spectra, the band gaps of 1 , 2 and 3 are 2.09, 1.78 and 1.91eV, respectively. Photoluminescence experiments show that compounds 2 and 3 exhibit luminescent properties. And the thermal stability of these compounds was tested by thermogravimetric and differential scanning calorimetry .
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Solar RRL
·
2023
·
IF 7.9
Zihao Wang,Chengwu Shi,Rui Cao,Kai Lv,Changsheng Ye,Wangchao Chen,Guiju Hu,Fuling Guo,Yanqing Wang
Herein, Na 2 SSeO 3 solutions are prepared by hydrothermal method at 140 °C for 8 h using Se powder and Na 2 SO 3 solution (the molar ratios of Se:Na 2 SO 3 = 1:4, 1:5, 1:6) and the chemical composition of Na 2 SSeO 3 solutions is analyzed by X-ray photoelectron spectroscopy. Sb 2 S y Se 3− y thin films are prepared by chemical bath deposition (CBD) at 90 °C for 5 h and subsequently annealed at 375 °C for 10 min and etched by N -butyldithiocarbamic acid solution in DMF. The effect of the Na 2 SSeO 3 solution, growth solution volume, etching on the thickness and chemical composition of Sb 2 S y Se 3− y thin films, and the power conversion efficiency (PCE) of the corresponding solar cells is systematically investigated. The result reveals that the Na 2 SSeO 3 solutions may be the mixing solutions containing Na 2 SSeO 3 , Na 2 S 2 SeO 6 , Na 2 S 2 Se 2 O 6 , Na 2 Se. When the molar ratio of Se:Na 2 SO 3 and growth solution volume is 1:5 and 56 mL and the Sb 2 S y Se 3− y thin films with annealing are etched, the PCE of Sb 2 S y Se 3− y solar cells is 8.00% with spiro-OMeTAD and 8.43% with spiro-OMeTAD:TMT-TTF. The PCE of 8.43% is the highest value for Sb 2 S y Se 3− y solar cells using CBD and demonstrates that the composition engineering is an important strategy for improving the PCE of Sb 2 S y Se 3− y solar cells using CBD.
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INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Nan Yu,Yingqiu Zhu,Tingting Wang,Ruihan Lin,Longhua Li,Guowei Yang,Xianglong Liu,Jianghua Li,Junli Wang
Currently, there is not much success in solving the molecular and crystal structures of long-chain metal alkanethiolate complexes [M(SCnH2n+1)m] at the atomic level. Taking Sb(SC16H33)3 (1) as an example, we herein disclose the structural characteristics of long-chain trivalent antimony(III) alkanethiolates Sb(SCnH2n+1)3 (n ≥ 12) by single-crystal X-ray crystallography. Specifically, the Sb atom is three-coordinated by alkanethiolate ligands and a slightly distorted triangular pyramid SbS3 core is formed owing to the unique intramolecular stereochemistry of three alkyl chains, namely, two of them almost parallel aligning and the third chain extending alone around the SbS3 core. We further determine the conformation, spatial orientation and packing density of alkyl chains in 1 along with a comparison to those in other long-chain crystalline systems, and reveal the roles of intermolecular van der Waals and Sb···S secondary interactions in molecular self-assembly, which enables 1 to be a layer-structured molecular crystal with a monoclinic P21/c unit cell. The band structures and the atomic orbital contributions to the valence band maximum and conduction band minimum for 1 have also been evaluated by DFT calculations and rationally correlated with its optical absorption property. This study will help understand and discover new structures and structure−property relations of long-chain chemical systems.
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Zheng Yi,Qigang Han,Yong Cheng,Fangxue Wang,Yaoming Wu,Limin Wang
A simple and inexpensive route is developed to synthesis the Sb thin film sandwiched between the reduced graphene oxide and the Ni foam (RGO-Sb TF -Ni) by a galvanic replacement reaction along with a pulse electrophoretic deposition route. As a binder-free anode material for lithium ion batteries , the RGO-Sb TF -Ni exhibits a high initial discharge capacity of 872.9 mA h g −1 and an enhanced coulombic efficiency of 66.0% at a current density of 100 mA g −1 in the first cycle. In addition, a substantial discharge capacity of 424.1 mA h g −1 can be retained even after 50 repeated cycles. The enhanced performances of the designed binder-free anode material can be attributed to the novel hierarchical sandwich laminated structure with an excellent electrical contact, and the synergistic effect between the Sb thin film with high specific capacity and flexible RGO with good buffer effect to alleviate the strain caused by the large volume change.
研究领域:
材料科学
·
能源存储
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高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Anqi Li,Xuening Bai,Yuting Xie,Pengyang Xia,Hebin Bao,Miao He,Xuzhong Zeng,Wenjing Yang,Xueming Li
To overcome the limitations imposed by Sn–Sb electrodes, the titanium foam (PMT)-TiO 2 -NTs@NiO–C/Sn–Sb composite electrodes with cubic crystal structure are synthesized by introducing NiO@C nanosheet arrays interlayer on the TiO 2 -NTs/PMT matrix through hydrothermal and carbonization process. Then a two-step pulsed electrodeposition method is used to prepare the Sn–Sb coating. Benefiting from the advantages of stacked 2D layer-sheet structure, the obtained electrodes exhibit enhanced stability and conductivity. Synergy of inner and outer layers fabricated by different pulse times strongly influence the electrochemical catalytic properties of the PMT-TiO 2 -NTs@NiO–C/Sn–Sb (Sn–Sb) electrode. Hence, the Sn–Sb (b0.5 h + w1 h) electrode is the optimal electrode to degrade the Crystalline Violet (CV). Next, the effect of the four experimental parameters (initial CV concentration, current density, pH value and supporting electrolyte concentration) on the degradation of CV by the electrode are investigated. The degradation of the CV is more sensitive to alkaline pH, and the rapid decolorization of CV when the pH is 10. Moreover, the possible electrocatalytic degradation pathway of CV is performed using HPLC-MS. Results from the tests show that the PMT-TiO 2 -NTs/NiO@C/Sn–Sb (b0.5 h + w1 h) electrode is an interesting alternative material in industrial wastewater applications.
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高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2020
·
IF 3.448
Haikun Zhang,Jingyi Xie,Yanyu Sun,Ailing Zheng,Xiaoke Hu
Antimony trisulfide (Sb 2 S 3 ) is industrially important for processes ranging from a semiconductor dopant through batteries to a flame retardant. Approaches for fabricating Sb 2 S 3 nanostructures or thin films are by chemical or physicochemical methods, while there have been no report focused on the biological synthesis of nano Sb 2 S 3 . In the present study, we fabricated nano-broccoli-like Sb 2 S 3 using Sb(V) reducing bacteria. Thirty four marine and terrestrial strains are capable of fabricating Sb 2 S 3 after 1–5 days of incubation in different selective media. The nano-broccoli-like bio-Sb 2 S 3 was light sensitive between 400–550 nm, acting as a photo-catalyst with the bandgap energy of 1.84 eV. Moreover, kinetic and mechanism studies demonstrated that a k value of ∼0.27 h −1 with an R 2 = 0.99. The bio-Sb 2 S 3 supplemented system exhibited approximately 18.4 times higher photocatalytic activity for degrading methyl orange (MO) to SO 4 2- , CO 2 and H 2 O compared with that of control system, which had a k value of ∼0.015 h −1 (R 2 = 0.99) under visible light. Bacterial community shift analyses showed that the addition of S or Fe species to the media significantly changed the bacterial communities driven by antimony stress. From this work it appears Clostridia, Bacilli and Gammaproteobacteria from marine sediment are potentially ideal candidates for fabricating bio-Sb 2 S 3 due to their excellent electron transfer capability. Based on the above results, we propose a potential visible light bacterially catalyzed self-purification of both heavy metal and persistent organic contamination polluted coastal waters.
研究领域:
材料科学
·
环境科学
·
生物技术
·
化学
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PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Jiantao Yuan,Nan Zhang,Jian Zhang,Xian-Ming Zhang
Single-crystal-to-single-crystal (SCSC) transformation materials are of great research interest because of their promising applications, among which multifunctional switching as next-generation intelligent materials in photoelectric devices is rare, and the corresponding mechanism remains unclear. Herein, we present two organic–inorganic hybrid antimony halides, namely (H2dach)2Sb2Br10·4H2O (1) and (H2dach)SbBr5 (2) (dach = 1,2-diaminocyclohexane) and their reversible mutual SCSC transformation. 1 and 2 adopt zero-dimensional discrete butterfly-like [Sb2Br10]4– dimers and one-dimensional infinite [SbBr5]n2n– chains, respectively, possessing abundant Sb···Br secondary bonds due to the strong stereochemical activity of 5s2 lone-pair electrons in Sb(III). Detailed structural analyses reveal that the reversible SCSC transformation is triggered by the rearrangement of Sb···Br secondary bonds, which enables the 25-time modulation of electron self-trapped photoluminescence with broadband orange emission. Humidity-dependent photoluminescence behavior of dehydrated 2 was also observed, which can be used to sense trace amounts of water. Furthermore, SCSC transformation via dehydration–rehydration could tailor hydrogen-bonding networks, resulting in switchable proton conductivity. The simulated kinetic mechanism of SCSC transformation by DFT is in agreement with the experimentally observed rearrangement of Sb···Br secondary bonds. This work demonstrates that the rearrangement of Sb···Br in hybrid halide systems is beneficial for elucidating dynamic transformation processes and promoting the development of multifunctional materials.
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高影响因子
JOM
·
2022
·Vol. 75
·期 5
·1515-1529
·
IF 2.597
Ge Yang,Liu Zhihong,Yu Zhiqian,Wang Huanwen,Lu Xingwu,Zhang Leru,Xia Longgong
The present study focused on the Cu-Pb system and investigating the distribution behaviors of various minor elements through the equilibration-quenching-EPMA analysis experimental technique. Obtained results showed that: (1) An intermetallic compound consisting mainly of Cu-Pb-Se-Te formed below 956°C. (2) As, Sb and Sn had similar distribution behaviors, which mainly entered the solid Cu phase at the temperature range of 500–900°C, but became concentrated in the liquid alloy phase at temperature range of 900–1060°C, and their distribution ratios increased along with increasing temperature. (3) Bi was mainly found in the liquid alloy phase, and its distribution ratio ranged from 6.8 to 836.5 at the experimental conditions. (4) Se and Te formed an intermetallic alloy phase under 900°C, and they enriched in the liquid alloy phase between 960°C and 1060°C. (5) Au was mainly found in the solid Cu phase at the temperature range of 500–900°C, and its distribution ratio was about 1.5 at 900–1060°C. The distribution ratio of Ag decreased from 8.7 to 2.3 when increasing the temperature from 500°C to 1060°C. Distribution behavior of As, Sb, Bi and Sn is consistent with their interfacial enthalpies with Cu and Pb.
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