POLYMER
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2019
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IF 3.771
Liping Jiang,Ruixia Kong,Yuliang Yi,Siqi Yang,Yu Mei,Xiaofei Feng,Zhanhai Yao,Jianfu Zhang
The present work proposes a facile but effective method for the design and synthesis of optical polymers with both high refractive index (RI) and Abbe number (AN) by the direct introduction and dispersal of elemental sulfur in polystyrene (PS). The excellent dispersal of the reaction products of elemental sulfur with styrene (St-S) in the PS result in the highest RI of 1.6220 and AN of 27.3. The acceptable uniform dispersal of elemental sulfur in the PS is verified by photographic analysis, optical transmission spectra, scanning electron microscopy, and energy dispersive spectroscopy analyses. The thermal properties of polymeric materials were investigated using thermogravimetric analysis and differential scanning calorimeter. The proposed strategy not only provides a new high RI material for optical applications, but also offers new opportunities for the dispersal of substances into polymeric materials.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Peng Yu,Yuanming Zhai,Rui-Ying Bao,Zheng-Ying Liu,Ming-Bo Yang,Wei Yang
In chemical industry, elemental sulfur (S) is widely used and always causes environmental and pollution concerns. Hence, the rapid and simple detection of S has become an important issue. In this work, we report an effective approach for visible determination of S. The color of the detection reagent, which was readily prepared by mixing N, N-Dimethylformamide and hydrazine hydrate in a certain ratio, changes from colorless to blue and gradually fades after getting in contact with trace S. The detection reagent can be used for repeated S detection because of the color fading behavior. By measuring the characteristic absorption intensity during detection or the fading time of the mixture, the content of S in the sample can be readily determined and the detection limit can be as low as 0.32 mg/L. An unstable chromogenic organic clathrate generated during detection was found to be responsible for the chromogenic reaction, as revealed by UV–vis, FTIR, NMR, high resolution mass spectrometry measurements and simulation. Thus, this work presents a simple, fast and device-independent approach that can realize semi-quantitative detection of trace S in water, alcohol, food and environmental samples.
研究领域:
化学工业
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2023
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IF 4.2
Yan Wang,Shuhang Ren,Yucui Hou,Yuanyuan Zhang,Yaling Li,Wanxiang Zhang,Weize Wu
In this work, a series of novel functionalized deep eutectic solvents (DESs) using 1,1,3,3-tetramethylguanidinium tetrazolate ([TMG][Tetz]) as a hydrogen-bond acceptor (HBA) and azole derivatives as hydrogen-bond donors (HBDs) were synthesized for the capture and catalytic reduction of SO2. [TMG][Tetz]:imidazole (Im) (1:2) DES with favorable stability and reversibility could effectively capture 2000 ppm of SO2. The absorption capacity of [TMG][Tetz]:Im (1:2) DES for 2000 ppm of SO2 was high up to 2.0 mol SO2/mol DES (0.40 g SO2/g DES) at 293.15 K. The results of the UV–vis and FTIR spectra revealed that two kinds of combination existed between SO2 and the DES: charge transfer interaction and chemical interaction. Surprisingly, the absorbed SO2, which was found to form charge transfer complexes with the DES, can be reduced by H2 to elemental sulfur under mild conditions without byproduct and additional catalysts. The yield of elemental sulfur could reach up to 37% at 373.15 K.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Engineering
·
2025
·
IF 6.7
Zulv Huang,Xipeng Wei,Lijuan Zhang,Tao Chen,Yi Huang,Zhangwei Yang,Wanqing Zeng,Hongxing Chen,Lingtian Xie,Bo Yan
Microbial reduction of pentavalent vanadium [V(V)] to less toxic tetravalent vanadium [V(IV)] is associated with the biogeochemical cycling of sulfur. However, the capability of elemental sulfur-reducing bacteria (S0RB) to reduce V(V) in the presence of elemental sulfur (S0) remains largely unexplored. Herein, we systematically investigated the V(V) reduction capabilities and underlying mechanisms of Bacillus megaterium R01, a S0RB strain isolated from the stone coal mining region. Under sulfur-depleted conditions, B. megaterium R01 demonstrated limited reduction capacity (<54.3% removal efficiency for 200 mg/L V(V)). In contrast, S0 supplementation enabled near-complete V(V) reduction (97.6 ± 2.1%) even at elevated concentrations (400 mg/L), achieving a relatively low carbon consumption rate (TOC/V(V) of ∼0.6). Sulfhydryl (SH) compounds, reaching 424.2 ± 9.9 μmol/L within 5 days, were likely crucial for reducing V(V) to V(IV). This mechanism differs from that of other V-reducing bacteria. The transcriptome analysis revealed that the up-regulation of genes associated with sulfur metabolism, cysteine, and methionine metabolism in B. megaterium R01 is likely to contribute to its enhanced resistance toward V(V). Additionally, the biosynthesis of intracellular BSH in B. megaterium R01, and the extracellular SH groups (e.g., Trx and TrxR encode enzymes) play an irreplaceable role in reducing V(V) by B. megaterium R01. This study enhances our understanding of V(V) reduction in sulfur-rich environments and suggests a promising approach for remediating V(V)-contaminated groundwater, sediments, and soils.
研究领域:
环境微生物学
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污染修复
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生物地球化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2018
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IF 6.653
Jin-ting Wang,Liang Zhang,Yuan Kang,Guanghao Chen,Feng Jiang
This study reported a novel observation that the long-term cultivation of sulfur-reducing bacteria (S0RB) from a sulfate-reducing bacteria (SRB)-abundant seeding sludge with elemental sulfur feeding significantly shaped the microbial community structure and eliminated the mercury methylation potential in the S0RB-enriched sludge. In this study, the enrichments of SRB and S0RB from activated sludge were obtained through long-term cultivations. Subsequently, the batch tests showed that approximately 5000 μg/L Hg (II) was completely removed from the solution by both the SRB-enriched and S0RB-enriched sludge. Extremely low or no MeHg production was observed in the S0RB-enriched sludge (less than the limit of detection, 0.01 μg/L), while 1.49 μg/L MeHg accumulated in the SRB-enriched sludge. Other batch tests using the sludge samples from a replication of the cultivation showed that the methylation capability of the S0RB-enriching sludge gradually diminished to a negligible level over a 6 month cultivation time. However, some mercury-methylation-related bacteria were present in the enrichment of S0RB such as Geobacter. The absence of MeHg in the S0RB-enriched sludge may be attributed to the dissolved organic matter (DOM) instead of the sulfur- and sulfate-reduction pathway or MeHg demethylation when exposed to Hg (II). The cultivated S0RB could be used for mercury-contaminated wastewater treatment without MeHg concern.
研究领域:
环境科学
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微生物学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Zewen Yang,Dandan Jia,Qing Zhao,Depeng Song,Yuan Zhang,Jing Gao,Xiaolin Sun,Takeo Ohsaka,Futoshi Matsumoto,Qiang Shen,Jianfei Wu
Lithium–sulfur (Li–S) batteries and lithium–selenium (Li–Se) batteries that contain only one single active element have unique advantages and disadvantages. Inspired by ternary lithium batteries, multielement chalcogenide compounds with integrated advantages may improve upon the performance of lithium-chalcogenide batteries at the source. In this work, activated carbon (AC) with an Al2O3@SiO2 heterojunction is used as the carrier, and the performances and mechanisms of elemental substances (X/AC, X = S, Se, and Te) are studied in ether and ester electrolytes as the basis for preparing multielement chalcogenide composites (SST/AC, SST: S–Se–Te compound). In the ester electrolyte system, SST811/AC (where S/Se/Te = 8:1:1, molar ratio) exhibited the best cycling performance, and the capacity remained at 1024.9 mA h g–1 after 300 cycles. The characterization results revealed the mechanisms and sequences of the gradual liquid-phase reactions of SST/AC in ether electrolytes and the direct solid-phase reactions in ester electrolytes. The active elements in SST/AC fully demonstrated their own functions, enabling the effective construction of new lithium-chalcogenide battery systems. This work provides inspiration for the subsequent research of multielement lithium-chalcogenide batteries and paves the way for their application.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Fanyun Chen,Chen Tian,Xuelin Pan,Qingshan Gao,Qingwei Wang,Liyuan Chai,Zhang Lin
Metallurgical sulfur-containing wastes (MSCWs) is an important secondary resource for recovering element sulfur in chemical and metallurgical industries. However, it is challenging to simultaneously achieve high recovery rate and sulfur purity, due to the multiple impurities combining with sulfur in these wastes. In this paper, we developed a novel method of pressure induced melting-crystallization to efficiently recover sulfur from MSCWs. The effects of condition parameters on the sulfur recovery rate and purity were optimized through response surface methodology. The single objective optimization results showed that the interaction between melting temperature and slurry concentration had a great influence on sulfur purity. The slurry concentration and pressure had great influence on sulfur recovery rate. The results of multi-objective optimization showed that under the conditions of pressure 1.2 MPa, slurry concentration 14.9% and melting temperature 140.9℃, the highest sulfur purity and recovery rate could reach 93.0% and 89.1% respectively. Mechanism investigation revealed that the high efficiency of sulfur recovery was ascribed to recrystallization of molten sulfur under the combined action of pressure and water, forming dense sulfur blocks and separating hydrophilic impurities. This work provides a new way to recover sulfur resources from MSCWs with sulfur content higher than 50%.
研究领域:
冶金工程
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2017
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IF 3.151
Shuhui Zhang,Lili Pan,Lieyin Xia,Yanbin Sun,Xikui Liu
In this study, we demonstrate the synthesis of dynamic polysulfide networks through the solution polycondensation of pentaerythritol tetra(3-mercaptopropionate) (PTMP) with elemental sulfur by a reverse vulcanization process. Elemental sulfur content as high as 51% can be incorporated into the dynamic polysulfide networks. An important feature of the resulted polysulfide networks is their catalytic-free malleability, which implies that they have both thermo- and photo-induced solid-state plasticities to obtain a complex permanent shape due to the exchange of dynamic S S bonds. These dynamic polysulfide networks have great potentials in fabricating complex three-dimensional shape memory devices for biological and mechanical applications.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Engineering
·
2024
·
IF 7.4
Yong Li,Bohan Chen,Xiaolei Zhang,Zhizhan Luo,Mengen Lei,Tao Song,Youcheng Wei,Ji Li,Zhiyun Long,Jun Ma
Elemental sulfur autotrophic partial denitrification (S0-PDN) can supply nitrite for anaerobic ammonium oxidation without an organic carbon requirement. This study aimed to evaluate the impact of high salinity on S0-PDN and investigate the feasibility of an enhanced strategy involving the addition of glycine betaine (GB). The results showed that high salinity inhibited S0-PDN by over 60% as salinity increased from low (0 and 5 g/L) to high (10 and 15 g/L) levels, even though Thiobacillus (65.9%–84.0%) was always the dominant genus. The reason might be the suppression of high salinity on the bioactivity. Surprisingly, the addition of GB (1 mmol/L) effectively enhanced the performance of S0-PDN under high salinity conditions (10 g/L), resulting in a 5.1-fold increase in the NO3–-N conversion efficiency and a 3.1-fold increase in the effluent NO2–-N concentration. Metagenomics analysis revealed that high salinity did not alter the dominant microbial composition. GB facilitated the recovery of the nitrate conversion capacity of sulfur autotrophic denitrifying bacteria with the up-regulation of nitrate reductase genes (by 18.1%) and Sox genes (by 21.4%). However, GB also stimulated the growth of heterotrophic denitrifying bacteria. Part of the nitrite produced in S0-PDN was reduced through heterotrophic denitrification with GB as an electron donor. Overall, the addition of GB was demonstrated as an effective approach to mitigate the inhibitory effects of high salinity on S0-PDN, which offers valuable theoretical support for its application in high-salinity wastewater treatment.
研究领域:
环境工程
·
微生物学
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
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2025
·
IF 7
Zhuo Zhao,Chaodan Pu
The reaction between elemental sulfur and metal oleate in hydrocarbon for synthesizing metal sulfide colloidal quantum dots (CQDs) was investigated. By utilization of refined signals obtained from Fourier transform infrared (FTIR) spectroscopy, accurate concentrations of oleate and oleic acid were quantified. Two distinct reaction processes with different kinetics and asynchronous changes in the concentrations of oleate and oleic acid were observed. The study of sulfur treatment on CQDs identified the first reaction process as a reaction between Cd(Ol)2 and the in situ-formed preliminary reactive products (CxHySn) of elemental sulfur. These species had high reactivity toward metal carboxylate, producing metal sulfide units, oleic acid, and lower reactive species (CxHy–2Sn–1). The second process referred to the reaction between CxHy–2Sn–1 and metal carboxylate to produce a metal sulfide unit and oleic acid. Owing to the fewer hydrogen and sulfur atoms, this process was much slower and had more asynchronous changes in the concentrations of oleate and oleic acid. Reactions employing different metal ions demonstrated the reaction between reactive sulfur species and metal carboxylate was a metal ion-assisted hydrogen transfer process. These dramatically different reaction processes not only influenced the growth but also affected the photoluminescence properties of metal sulfide nanocrystals.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
POWDER TECHNOLOGY
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2019
·
IF 3.413
Wei Zhang,Fengzhen Zhang,Liping Ma,Jie Yang,Jing Yang,Huaping Xiang
Barium sulfide has been widely accepted as a useful barium compound in many fields. To reduce the emission of CO 2 through tail gas during the current industrial production of barium sulfide by the black ash method, a new clean process for barium sulfide preparation by barite reduction using elemental sulfur is proposed. Herein, we report a study on the kinetics and thermodynamics of the thermal decomposition of barium sulfate by elemental sulfur . The mechanism of this complicated gas–solid reaction was investigated under non-isothermal conditions, at different heating rates. Four isoconversional methods were used to determine the activation energy . The mechanism model of the barium sulfate decomposition was confirmed using the double equal–double step method. The results suggested that the barium sulfate decomposition followed the Jander D3 spherical symmetry model; the order of the reaction ( n = 1.06) was determined using the Carne equation.
研究领域:
化学工程
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2022
·
IF 4.855
Congcong Miao,Xingwei Xun,Liam J. Dodd,Shiquan Niu,Haoran Wang,Peiyao Yan,Xi-Cun Wang,Jian Li,Xiaofeng Wu,Tom Hasell,Zheng-Jun Quan
Sulfur-rich polymers generated from the inverse vulcanization of elemental sulfur with unsaturated monomers have emerged as a family of organic polymers with unique functionalities and broad potential applications. First described in 2013, inverse vulcanization is still in its infancy regarding its fundamental development, property exploration of the resultant polymers, and practical utilizations. Herein, the robust properties of sulfur-rich composites generated by inverse vulcanization with SiO2-embedded elemental sulfur are revealed, furnishing superhydrophobicity with static water contact angles of up to 154.7 ± 1.8°, a high anticorrosive effect of 98.9% protection efficiency for Mg alloy in 3.5 wt % NaCl solution, and a good antibacterial performance against Escherichia coli (81%) and Staphylococcus aureus (75%). The resulted composite also shows excellent self-cleaning functionalities. This has not only expanded the properties/functionalities and applications of the sulfur-rich polymers resulting from inverse vulcanization but also provided low-cost alternatives to superhydrophobic coating materials for practical applications.
研究领域:
材料科学
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聚合物化学
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表面科学
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腐蚀科学
·
生物材料
✓ 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）