Polymers
·
2018
·Vol. 10
·期 10
·1101
·
IF 2.935
Qiancheng Xiong,Qiuhong Bai,Cong Li,Huan Lei,Chaoyun Liu,Yehua Shen,Hiroshi Uyama
Ecological and environmental damage caused by oil spillage has attracted great attention. Used cigarette filters (CF) have also caused negative environmental consequences. Converting CF to economical materials is a feasible way to address these problems. In this study, we demonstrate a simple method for production of a highly hydrophobic absorbent from CF. CF was modified by using different volume ratios of octadecyltrichlorosilane and methyltrimethoxysilane. When the volume ratio was 3:2, the modified CF had the high water contact angle of 155°. It could selectively and completely absorb silicone oil from an oil-water mixture and showed a good absorption capacity of 38.3g/g. The absorbed oil was readily and rapidly recovered by simple mechanical squeezing, and it could be reused immediately without any additional treatments. The as-obtained superhydrophobic modified CF retained an absorption capacity of 80% for pump oil and 82% for silicone oil after 10 cycles. The modified CF showed good elasticity in the test of repeated use. The present study provides novel design of a functional material for development of hydrophobic absorbents from used CF via a facile method toward oil spillage cleanup, as well as a new recycling method of CF to alleviate environmental impacts.Keywords:cigarette filter;superhydrophobic;highly selective;absorbent;oil spillage
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 149
·期 6
·1651-1659
·
IF 2.372
Bao Jingxian,Fan Yonghui,Zhang Shuyi,Zhong Liangshu,Wu Minghong,Sun Yuhan
Abstract An atomically economical green protocol for the hydrofunctionalization of olefins to higher aliphatic alcohols with 100% anti-Markovnikov regioselectivity was developed via visible-light photocatalytic coupling. This method employs cheap, readily available and abundant methanol as both the C1 feedstock and the hydrogen source under visible light irradiation over CdS photocatalyst. A wide scope of olefin substrates could be hydrofunctionalized successfully to the corresponding higher alcohols with high selectivity. Besides alcohol, acetone and acetonitrile can also couple with olefins to generate the corresponding hydrofunctionalization products, suggesting promising potential industrial application. Graphical Abstract Hydrofunctionalization of olefins to value-added chemicals with high selectivity was achieved via visible-light photocatalytic cross-coupling.
研究领域:
化学
·
绿色化学
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光催化
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DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 1
·390-395
·
IF 2.936
Xianwei Fu,Shilong Jiao,Ning Dong,Gang Lian,Tianyu Zhao,Song Lv,Qilong Wang,Deliang Cui
A room-temperature NO2 gas sensor with excellent performances is fabricated using an MAPbI3 (MA = CH3NH3+) thin film. It presents a high response even under extremely low NO2 concentrations. Its average response and recovery times are only ∼5 s and ∼25 s at room temperature, respectively, exhibiting its quick-responsive character. In addition, the MAPbI3-based NO2 sensor exhibits good selectivity. Interestingly, the sensitivity of the MAPbI3-based NO2 sensor is strikingly improved under high-pressure gas conditions. This phenomenon can be used for the online monitoring of chemical reaction processes and in situ detection of trace-level gas impurities under high-pressure conditions. Furthermore, based on theoretical calculations, a simple model is proposed to illustrate the corresponding gas-sensing mechanism.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Catalysts
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2022
·Vol. 12
·期 3
·325
·
IF 4.501
Qinglei Meng,Xiaolong Yang,Xian Wang,Meiling Xiao,Kui Li,Zhao Jin,Junjie Ge,Changpeng Liu,Wei Xing
Formic acid decomposition (FAD) is one of the most promising routes for rapid hydrogen (H2) production. Extensive efforts have been taken to develop efficient catalysts, which calls for the simultaneous regulation of the electronic structure and particle size of the catalyst. The former factor determines the intrinsic performance, while the latter corresponds to the active site utilization. Here, an effective preparation strategy, pre-nucleation coupled with in situ reduction, is developed to realize and well-tune both surface electronic states and particle size of the pallidum (Pd) catalyst. Benefiting from the structural merits, the as-prepared catalyst exhibits high mass-specific activity of 8.94 molH2/(gPd·h) with few carbon monoxide (CO) molecules, and the activation energy could reach a value as small as 33.1 kJ/mol. The work not only affords a highly competitive FAD catalyst but also paves a new avenue to the synthesis of ultra-fine metal nanoparticles with tailorable electronic structures.Keywords:hydrogen evolution;formic acid;heterogeneous catalysis;high selectivity;Pd-PdO interface
研究领域:
催化
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材料科学
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化学工程
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DOI
高影响因子
SENSORS
·
2022
·Vol. 23
·期 1
·148
·
IF 3.847
Ji Zhang,Xu Li,Qinhe Pan,Tong Liu,Qingji Wang
Hydrogen (H2) has gradually become a substitute for traditional energy, but its potential danger cannot be ignored. In this study, litchi-like g-C3N4/In2O3composites were synthesized by a hydrothermal method and used to develop H2sensors. The morphology characteristics and chemical composition of the samples were characterized to analyze the gas-sensing properties. Meanwhile, a series of sensors were tested to evaluate the gas-sensing performance. Among these sensors, the sensor based on the 3 wt% g-C3N4/In2O3(the mass ratio of g-C3N4to In2O3is 3:100) showeds good response properties to H2, exhibiting fast response/recovery time and excellent selectivity to H2. The improvement in the gas-sensing performance may be related to the special morphology, the oxygen state and the g-C3N4/In2O3heterojunction. To sum up, a sensor based on 3 wt% g-C3N4/In2O3exhibits preeminent performance for H2with high sensitivity, fast response, and excellent selectivity.Keywords:g-C3N4/In2O3;litchi-like;H2sensor;fast response;high selectivity
研究领域:
材料科学
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传感器技术
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DOI
PubMed
高影响因子
Nanomaterials
·
2018
·Vol. 9
·期 1
·32
·
IF 3.504
Zhezhe Wang,Xuechun Xiao,Tong Zou,Yue Yang,Xinxin Xing,Rongjun Zhao,Zidong Wang,Yude Wang
Citric acid capped CdS quantum dots (CA-CdS QDs), a new assembled fluorescent probe for copper ions (Cu2+), was synthesized successfully by a simple hydrothermal method. In this work, the fluorescence sensor for the detection of heavy and transition metal (HTM) ions has been extensively studied in aqueous solution. The results of the present study indicate that the obtained CA-CdS QDs could detect Cu2+with high sensitivity and selectivity. It found that the existence of Cu2+has a significant fluorescence quenching with a large red shifted (from greenish-yellow to yellowish-orange), but not in the presence of 17 other HTM ions. As a result, Cu2S, the energy level below the CdS conduction band, could be formed at the surface of the CA-CdS QDs and leads to the quenching of fluorescence of CA-CdS QDs. Under optimal conditions, the copper ions detection range using the synthesized fluorescence sensor was 1.0 × 10‒8M to 5.0 × 10‒5M and the limit of detection (LOD) is 9.2 × 10‒9M. Besides, the as-synthesized CA-CdS QDs sensor exhibited good selectivity toward Cu2+relative to other common metal ions. Thus, the CA-CdS QDs has potential applications for detecting Cu2+in real water samples.Keywords:fluorescence sensor;citric acid;CdS quantum dots;copper ions;high selectivity
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2018
·
IF 4.244
Yong Zhang,Hongyu Jing,Tao Wen,Yao Wang,Yang Zhao,Xiangke Wang,Xiaohong Qian,Wantao Ying
It is challenging to capture N-glycopeptides with high recovery and high specificity from complicated biosystems. Herein, we present a facile and economical procedure to generate a novel self-assembling 4-Mercaptobenzene boronic acid functionalized and Au-doped Straticulate C 3 N 4 (MASC), with enhanced affinity capability towards glycopeptides . The materials possess low pH value adaptation, high hydrophilicity and stability, good repeatability and recyclability, and provided high selectivity (1:100), low limit of detection (0.33 fmol/μL), high enrichment efficiency (~ 80%) and high recovery rate (~ 90%) towards glycopeptides. The materials can capture glycopeptides unbiasedly, as demonstrated by the identification of 37 glycopeptides from IgG and 21 glycopeptides from horseradish peroxidase (HRP). The performance of MASC on human urine and serum glycoproteome analysis was also tested. An average of 1465 glycopeptides from 839 glycoproteins and 1553 glycopeptides from 884 glycoproteins were identified from female and male urine samples in a single mass spectrometry analysis. O -glycopeptides from human urine were also significantly enriched. Additionally, 463 glycopeptides assigned to 209 glycoproteins were identified from 5 μL of human serum. All of these results indicate that MASC presents a good performance and applicability in the field of glycoproteomic research.
研究领域:
蛋白质组学
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分析化学
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生物医学
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DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2018
·
IF 3.794
Weiya Zhu,Yang Liu,Kang Guan,Cheng Peng,Wanqi Qiu,Jianqing Wu
A dual-layer alumina microfiltration membrane with super permeability and high selectivity was prepared by co-sintering the membrane and the support. Silica sol as sintering aid for the supports can also promote adhesion between supports and membranes. Tape-casting technique was introduced here to form the pre-membranes which were directly transfer-coated on the green support bodies. The optimum co-sintering conditions and the effects of organic agent content and membrane thickness on the membrane performance were comprehensively investigated. The optimized ceramic membrane had an average pore size of 249 nm and a water permeance of 5040 Lm −2 h -1 bar -1 after co-sintering at 1300 °C for 2 h, which also exhibited a rejection rate of 96.2% for the carbon ink with an average particle size of 237 nm. This work provides a new method for efficient and low-cost preparation of high-performance ceramic membranes.
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
Chemosensors
·
2023
·Vol. 11
·期 3
·192
·
IF 4.2
Zhanpeng Ren,Jianying Wang,Chenglong Xue,Minghua Deng,Ziqin Li,Huibin Zhang,Chen Cai,Bing Xu,Xianbao Wang,Jinhua Li
A carbon dot-functionalized solution-gated graphene transistor (CD-SGGT) was designed and prepared via the modification of CDs on the gate of SGGT. The above CDs were hydrothermally synthesized using DL-thioctic acid and triethylenetramine as C, N and S sources. The average size of CDs was ~6.2 nm, and there were many amino and carboxyl groups on the CDs’ surfaces. The CDs was then used as a probe for preparation of CD-SGGT sensor for the cobalt(II) (Co2+) ions detection. The CD-SGGT sensor showed excellent sensitivity and high selectivity. Remarkably, the limit of detection (LOD) reached 10−19M. The linear detection range was obtained from 10−19to 10−15M. Additionally, the CD-SGGT also showed fast response and good stability.Keywords:carbon dots;graphene;transistor;cobalt(II) ions;high selectivity;high sensitivity
研究领域:
材料科学
·
分析化学
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产品关联
DOI
高影响因子
Chemosensors
·
2023
·Vol. 11
·期 5
·289
·
IF 4.2
Ji Zhang,Fangfang Zhang,Xu Li,Qingji Wang
With increasingly serious environmental problems caused by the improvement in people’s living standards, the number of cars has increased sharply in recent years, which directly leads to the continuous increase in the concentration of NO2in the air. NO2is a common toxic and irritant gas, which is harmful to both the human body and the environment. Therefore, this research focuses on NO2detection and is committed to developing high-performance, low detection limit NO2sensors. In this study, flower-like Au-loaded In2O3was successfully fabricated using the hydrothermal method and the wet impregnation method. The morphological features and chemical compositions of the as-prepared samples were characterized using SEM, TEM, XRD and XPS. A variety of sensors were fabricated and the gas-sensing properties of sensors were investigated. The results indicate that the sensor based on 0.5 mol% Au/In2O3shows a response value of 1624 to 1 ppm NO2at 100 °C, which is 14 times that based on pure In2O3. Meanwhile, the detection limit of the sensor based on 0.5 mol% Au/In2O3for NO2is 10 ppb, and the response value is 10.4. In addition, the sensor based on 0.5 mol% Au/In2O3also has high selectivity to NO2among CO, CO2, H2, CH4, NH3, SO2and H2S. Finally, the sensitization mechanism of Au/In2O3was discussed, and the reasons for improving the performance of the sensor were analyzed. The above results and analysis demonstrate that the gas-sensing attributes of the sensor based on 0.5 mol% Au/In2O3to NO2improved remarkably; at the same time, it has been proved that the composite material has extensive potential in practical applications.Keywords:NO2sensor;flower-like;Au-loaded In2O3;low detection limit;high selectivity
研究领域:
环境科学
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材料科学
·
化学工程
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2017
·Vol. 7
·期 21
·5055-5068
·
IF 5.773
Pengyu Niu,Hongjuan Xi,Jun Ren,Minggui Lin,Qiang Wang,Litao Jia,Bo Hou,Debao Li
Highly siliceous ZSM-22 was synthesized under hydrothermal conditions with ZSM-22 seeds. Characterization by FT-IR and 1H and 29Si NMR spectroscopy confirms that due to the existence of defective sites in the siliceous ZSM-22, acidic silanol groups including vicinal silanol and silanol nests are detected. Acidic silanol groups are considered as the acid sites of siliceous ZSM-22. As a result, siliceous ZSM-22 shows much lower acid site density and lower acid strength than silica–alumina ZSM-22 which contains hydroxyl groups bridging Si and Al as acid sites. In n-dodecane isomerization, Pt/siliceous ZSM-22 shows much higher isomer selectivity than Pt/silica–alumina ZSM-22. Furthermore, a lower loading amount of Pt on siliceous ZSM-22 (about 0.2 wt% Pt) can lead to high isomer selectivity. Owing to the acidic silanol groups and the low acid site density of siliceous ZSM-22, a good balance between metal and acid function in Pt/siliceous ZSM-22 is achieved, which results in a lower allowable Pt loading value and higher isomer selectivity.
研究领域:
催化化学
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材料科学
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石油炼制
·
表面化学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2025
·
IF 10.3
Yarui Li,Huangjie Lu,Yingzhe Du,Jie Qiu,Peng Lin,Jian Lin
Partitioning of actinides from lanthanides is pivotal for advancing nuclear waste management and sustaining nuclear energy development, yet it remains a formidable challenge due to the intricate chemical behaviors of these f-block elements. In this study, we introduce 3,6-di-2-pyridyl-1,2,4,5-tetrazine (L1), whose hydrolysis product of pyridine-2-carbox-aldehyde (pyridine-2-carbonyl)-hydrazone (L2) can fractionally crystallize U(VI) ions over Ln(III) cations with high selectivity and efficiency. Through hydrolysis-induced C–N bond cleavage, L2 acts as a tetradentate ligand, coordinating with two UO 2 2+ ions in a planar arrangement to form a zero-dimensional cluster, [(UO 2 ) 2 ( μ 3 -O)(L2)(CH 3 COO)]·DMF (U-L2), while lanthanide ions (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Yb, and Lu) remain in solution due to their inability to achieve similar coordination. This selective crystallization strategy yields exceptional separation factors (SFs) between U(VI) and Ln(III), with a value of 756276 between U(VI) and Sm(III), the highest reported to date. Furthermore, this fractional crystallization separation process can be achieved under mild ambient conditions with high SFs, enabling the development of a rapid, safe and energy-efficient strategy for once-through separation of high oxidation state actinides from lanthanides.
研究领域:
核化学与化工
·
放射化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）