RESEARCH ON CHEMICAL INTERMEDIATES
·
2013
·Vol. 41
·期 5
·3079-3087
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IF 0.88
You Yujing,Jiang Zhiqiang,Zhang Yingxin,Ge Changhua,Li Rongrong
A novel photocatalyst with three-dimensional axis-shell spiny nanostructures was developed by coating titanium dioxide onto the surface of carbon nanotubes (CNTs) via a facile hydrothermal method. Scanning electron microscopy results demonstrated the formation of nanosheet structures and uniform flowerlike morphologies on the CNTs. The nitrogen adsorption experiment confirmed mesoporous structures in this catalyst. The photocatalytic degradation of Rhodamine B dye under visible-light irradiation was investigated in this unique photocatalyst.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Zonglin Liu,Baoqiang Li,Yujie Feng,Dechang Jia,Caicai Li,Qingfeng Sun,Yu Zhou
Reasonable design and facile synthesis of high-efficiency non-noble electrocatalysts for hydrogen evolution reaction (HER) in water splitting are crucial for renewable and clean energy technologies. Increasing the number of active sites via nanostructuring is a fundamental method to promote the HER activity of the catalysts. However, the balance between the exposed active sites and the stability cannot be well maintained due to the aggregation of nanoscale catalysts. Therefore, it is imperative to combine effective active compounds with suitable carbon materials to stabilize nanomaterials. Hence, a hybrid architecture with Ni(PO 3 ) 2 nanoparticles ladened on the carbon nanotubes (Ni(PO 3 ) 2 /CNTs) was elaborately designed and synthesized by pyrolyzing the nickel phthalocyanine (NiPc)/CNTs assemblies and subsequent phosphidation. The π-π interaction between NiPc and CNTs is conductive to the tight attachment of the active species to the substrate, while the inlaid structure effectively prevents the corrosion/aggregation of Ni(PO 3 ) 2 nanoparticles and ensures the stability of the catalyst. Accordingly, Ni(PO 3 ) 2 /CNTs displayed excellent HER performances with remarkable stability both in 1.0 M KOH and 0.5 M H 2 SO 4 with overpotentials of 71 mV and 87 mV at 10 mA cm −2 , respectively. The Tafel slopes of Ni(PO 3 ) 2 /CNTs in alkaline and acid medium were 65 mV dec -1 and 46 mV dec -1 , respectively, both exposed a Volmer-Heyrovsky mechanism during the HER. The present work will shed new light on the exploitation of non-noble metal high-efficiency HER electrocatalysts.
研究领域:
材料科学
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能源技术
·
电化学
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 5
·1636-1647
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IF 2.43
Jin Yuning,Wu Danping,Ma Na,Dai Wei
MOFs (metal-organic frameworks) significantly suffer from water- and heat instable issues, restricting their practical application, such as the capture of hazardous anionic dyes (e.g. Congo red, CR) from water. In the present contribution, a series of novel composites (UiO-67@CNTs) composed of microporous UiO-67 (Zr6O4(OH)4(CO2)12) and mesoporous CNTs (carbon nanotubes) have been innovatively synthesized by an in-situ hydrothermal reaction strategy. This UiO-67@CNT impressively retains structural integrity whether contacted with strong acid, distilled water, and strong alkali conditions even for 20 days. Due to the existence of CNT, its heat stability can reach up to 480 °C, which is superior to that of UiO-67. Open Zr(IV) sites, mesoporous, and high surface area in the structure of UiO-67@CNTs play associative effects for CR capture ability. CR uptakes over (5.0)UiO-67@CNTs can reach 1024 mg/g, exceeding some other previous adsorbents in literature. Importantly, UiO-67@CNTs could retain a remarkable CR capture ability even after the fifth cycle. This work expands views for water-heat resistant MOF-based composite with excellent ability of CR capture. UiO-67@CNTs exhibited outstanding hydrolytic stability, retaining intactness for 20 days even in strong acid and alkali. UiO-67@CNTs performed more excellent thermal stability until 480 °C. Novel UiO-67@CNTs have potential applications for CR capture.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yong Liu,Ni Tan,Jinrui Guo,Jianlong Wang
In this study, a novel Al°-CNTs-Cu 2 O composite, capable of activating O 2 to generate H 2 O 2 and further to reactive oxygen species (ROSs) at a wide pH range, was synthetized, characterized and applied for the degradation of sulfamerazine. In the activation of O 2 by Al°-CNTs-Cu 2 O composite, H 2 O 2 was generated from the reaction of O 2 with Al°-CNTs, which could be catalytically decomposed into O 2 − and OH by Cu 2 O, the formed Cu(II) could be rapidly reduced to Cu 2 O by Al°-CNTs in composite, which made Al°-CNTs-Cu 2 O composite reusable and decreased the leaching of copper ions into solution. The removal efficiency of SMR and TOC was 73.91 % and 56.80 %, respectively at initial pH = 5.8, T = 20 °C, O 2 flow rate = 100 mL/min, Al°-CNTs-Cu 2 O dosage = 2 g/L, SMR = 50 mg/L, and reaction time = 60 min. The removal efficiency of SMR kept almost unchanged and the concentration of copper ions in solution was below 0.5 mg/L. The Al°-CNTs-Cu 2 O/O 2 process could be used as a novel catalyst for the degradation of refractory organic contaminants in water and wastewater by Fenton-like process at a wide pH range through the in situ generation of H 2 O 2 .
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
·
2019
·
IF 4.474
Dingding Duan,Xiaojing Si,Yaping Ding,Li Li,Guohong Ma,Lu Zhang,Bingyu Jian
In this paper, we constructed MIL-53 (AlOHbdc, bdc = benzene-1,4-dicarboxylate) /CNTs and Prussian blue (PB) as the double sensitization material of the sensing platform, in which the MIL-53/CNTs hybrid can not only increase the specific surface area but also increase the conductivity of the sensor and PB can play a role in amplifying electrical signals and accelerating electron transmission. Pyrrole was used as monomer and E2 was used as template for electropolymerization to form conductive film. Moreover, the overoxidation/dedoping elution method were used to simplify the experimental process. Under optimal conditions, the MIECS exhibited an excellent sensitivity and high selectivity with a wide linear response range between 10 −14 to 10 −9 mol L −1 and an estimated detection limit of 6.19 × 10 −15 mol L −1 .
研究领域:
分析化学
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环境科学
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医学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Dianbo Zhang,Rui Yin,Yanjun Zheng,Qianming Li,Hu Liu,Chuntai Liu,Changyu Shen
High-performance electronic textile with outstanding strain sensing, electromagnetic interference (EMI) shielding, and Joule heating performances are highly desirable for modern integrated smart wearable electronic devices. Herein, multifunctional electronic textile based on hybrid Ti 3 C 2 T x MXene and carbon nanotubes (CNTs) conductive nanomaterials coated thermoplastic polyurethane (TPU) non-woven fabric (MCT-fabric) is fabricated via a facile dip-coating approach. Based on the synergistic MXene/CNTs conductive coating and pre-stretching induced ultrasensitive microcrack structure, tunable conductive MCT-fabric strain sensor with high sensitivity (GF is as high as 9022), wide sensing range (∼210 %), rapid response/recovery time (140/160 ms), excellent long-term stability and reliability (∼1000 cycles) is successfully constructed. Besides, benefiting from the perfect synergistic conductive network and porous fibrous network structure, the MCT-fabric displays superior EMI shielding effectiveness (∼43 dB for the MCT-fabric with a thickness of 600 μm) and excellent thermal management performance including high Joule heating temperature at relatively low applied voltages, rapid Joule heating response, sufficient heating stability and reliability. This work indicates that the high-performance multifunctional electronic textile has attractive potential for strain sensing, EMI shielding and thermal management applications in artificial intelligence and emerging wearable electronics.
研究领域:
材料科学
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柔性电子
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智能可穿戴设备
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 21
·25952-25962
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IF 2.478
Wang Yafei,Liang Luyang,Du Ziran,Wang Yaming,Liu Chuntai,Shen Changyu
Environment friendly electromagnetic interference (EMI) shielding materials with excellent EMI-shielding efficiency (SE) are urgently required to deal with the increasing electromagnetic wave and environmental pollution. In this work, biodegradable poly(lactic acid) (PLA)/carbon nanotubes (CNTs)/Ti 3 C 2 T x MXene nanocomposites are prepared via co-coagulation and compression molding techniques. The distribution state of Ti 3 C 2 T x MXene or CNTs, the excellent conductivity and EMI-shielding properties of the nanocomposites are confirmed by scanning electron microscopy (SEM), four-probe conductivity tester and vector network analyzer, respectively. The PLA/CNTs/Ti 3 C 2 T x nanocomposites show efficient EMI SE of 24.4 dB for 7 wt% CNTs/8 wt% Ti 3 C 2 T x at the thickness of 0.5 mm. By increasing the thickness of the film, the EMI SE of PLA/CNTs/Ti 3 C 2 T x nanocomposites can be increased to 39.6 dB at 1.9 mm, nearly 99.989% of electromagnetic wave is shielded. The EM wave reflection is the main shielding mechanism of the PLA/CNTs/Ti 3 C 2 T x nanocomposites. Considering future environmental issues, this work provides a novel way for fabricating MXene-based biodegradable EMI shielding materials.
研究领域:
材料科学
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环境科学
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电磁工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Shuai Liu,Ke Zhang,Lu Tan,Shaopeng Qi,Guoning Liu,Jinxi Chen,Yongbing Lou
All-inorganic halide perovskites have recently made remarkable achievements in the field of photo-electrochemistry, but rarely been applied in energy storage devices, especially, in lithium-ion batteries (LIBs). In this article, the specific composite composed of carbon nanotubes (CNTs) tightly wrapped perovskite-CsPbBr 3 (CsPbBr 3 @CNTs) was synthesized by a simplified co-precipitation method. Attributed to the specific morphology, the CsPbBr 3 @CNTs composite supplied short pathways for the transport of both electrons and lithium ions, along with the interface for pseudocapacitive behavior. The synergistic effects of CsPbBr 3 and CNTs enhanced the pseudocapacitive effect, thus, CsPbBr 3 @CNTs exhibited high cycling stability and rate capability. The prominent lithium storage capabilities were exhibited then, with first reversible capacity of 644.6 mA h g −1 /100 mA g −1 and maintained at 470.2 mA h g −1 after 200 cycles. Moreover, under the large current density of 600 mA g −1 , it kept a stable capacity of 203.8 mA h g −1 . This study, for the very first time, proved the great application potential of all-inorganic perovskite composite materials with surface dominating pseudocapacitive contribution in LIBs.
研究领域:
材料科学
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能源存储
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hui Lu,Hongbo Wang,Changfei Gao,Lifen Liu,Tingting Yu,Yihua Li,Shaoying Lin
Lanthanum and cerium are widely used as important raw materials for energy storage batteries due to excellent natural electrical, magnetic, and optical properties. However, with the explosive growth of new energy generation and the environmental degradation-resistant of lanthanum and cerium, it is difficult to balance environmental sustainability and resource scarcity to achieve lanthanum-cerium removal by conventional chelate salt precipitation. Herein, a laboratory-scale self-powered electro-membrane bioreactor (SPEMBR), integrating high-active nitrogen-doped carbon nanotube-loaded iron and molybdenum bimetallic conductive composite electrode membrane (M−N−CNTs@Fe/Mo) by hydrothermal and phase inversion processes was successfully constructed and evaluated for removing lanthanum cerium from industrial wastewater. The prepared bi-functional M−N−CNTs@Fe/Mo5% electrode membrane exhibited a uniform morphology and excellent hydrophilicity, with nano pore lattice spacing only 0.2637 nm. Electrochemical test results demonstrated that the novel electrode indicated excellent redox properties (i 0 = 8.35 × 10 −3 A cm −2 , C dl = 1.13 mF cm −2 ) and efficient electron transfer efficiency (R ct = 4.69 Ω, n = 3.9). Based on optimized conditions (5)% doping ratio, pH = 10, C = 20 mg/L), the SPEMBR assisted by M−N−CNTs@Fe/Mo catalytic electrode membrane achieved approximately complete removal efficiency of lanthanum and cerium (>99.2 %), superior to most publicly available related studies (86.3 %-99.0 %), but with a calculation cost of only $8.54. Identification of membrane interface products and system precipitates demonstrated that the outstanding removal efficiency was attributed to the combined reaction mechanism of electroreduction, electrocoagulation and electromembrane filtration. This work provides a bright application prospect for low-cost and effective removal of lanthanum cerium metal based on electrode membranes.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Ziyu Jia,Yuming Yang,Chunwei Yang,Dong Wang
Aniline is highly toxic and difficult to degrade by conventional biological treatment processes. Thus, more efficient processing technology needs to be developed. Photocatalysis coupling catalytic ozonation (PCO) could be a solution. In this study, a green precipitation method was used to synthesize a γ-Fe 2 O 3 /ZnO@CNT catalyst, which exhibits high activity for aniline PCO degradation and strong magnetic properties for rapid separation. Under the optimal conditions, the aniline removal rate reached 93.5%. After 5 reaction cycles, the γ-Fe 2 O 3 /ZnO@CNT catalysts can be separated easily with a magnet, and a 91% aniline removal rate can be maintained. Furthermore, there are at least 4 kinds of advanced oxidation processes (AOPs) in this system, i.e., (1) photocatalytic oxidation; (2) catalytic ozonation; (3) photocatalytic ozone; and (4) Fenton oxidation. Thus, a novel stable and magnetically separable catalyst was developed, and new insight were provided for the role of PCO processes in the treatment of aniline.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yaru Diao,Li Li,Yaoxiang Xu,Yanshan Liu,Ruxi Sun,Liqiang Chen,Yupeng Wu,Xiaohan Gao,Wenhao Cheng,Chen Chen,Zexian Xu,Jian Sun
In bone tissue reconstruction, infection is a critical limiting factor affecting treatment efficacy. So it is necessary to introduce antibacterial agents onto scaffold surfaces for functional modification while balancing osteoblast activity. Carbon nanotubes (CNTs), with their exceptional osteogenic properties and drug-loading capacity, emerge as ideal materials. Digital 3D printing technology was employed to composite CNTs loaded with the antibacterial agent chlorhexidine gluconate (CG) with polylactic acid-nano hydroxyapatite (PLA/nHA), and a novel composite scaffold with a controllable porous structure (PLA/nHA/CNTs-CG) was successfully constructed. TEM observations revealed the hollow structure of CNTs, while XPS, XRD, N2 adsorption–desorption tests, and TGA confirmed successful CG loading. SEM analysis demonstrated the porous network-like structure of PLA/nHA/CNTs-CG scaffolds, exhibiting compressive strength of (8.44 ± 0.24) MPa. Initial biosafety validation through CCK-8 assay, live/dead cell staining, and hemocompatibility tests confirmed good biocompatibility. Cell adhesion experiments demonstrated enhanced cellular attachment on PLA/nHA/CNTs-CG scaffolds. Osteogenic performance tests revealed that CNTs incorporation improved MC3T3-E1 cell osteogenic differentiation, with CG presence not compromising scaffold osteogenic activity. Antibacterial experiments demonstrated potent antibacterial effects against both Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The PLA/nHA/CNTs-CG composite scaffold demonstrates dual functionality in infectious bone defect repair by simultaneously promoting bone regeneration and exerting antibacterial effects, providing novel insights for designing bone repair materials for infected defects.
研究领域:
生物材料学
·
再生医学
·
骨科
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 31
·15175-15184
·
IF 3.925
Hai Wang,Jinxia Huang,Xiaobo Wang,Zhiguang Guo,Weimin Liu
Transition metal nitrides have good metallic conductivity and high pseudocapacitance, which have drawn extensive attention in the research of Zn-ion energy storage systems. In this paper, we present a novel fabrication of carbon cloth-supported TiN-coated carbon nanotube composites (TiN/CNTs@CC and TWC) via a CVD–ALD method using ethanol, TiCl4 and H2O as precursors. The prepared TWC composites can be used as self-supported electrodes with good flexibility and conductivity. Electrochemical performance tests show that the TiN/CNTs@CC electrode has a high specific capacitance of 363.5 F g−1 at 0.5 A g−1, good rate capability and excellent cycling stability with 92.9% capacity retention over 10 000 charge/discharge cycles. Impressively, the assembled zinc ion hybrid capacitor can achieve a high energy density of up to 81.8 W h kg−1 at a power density of 137.7 W kg−1. Even at a power density of 3013.7 W kg−1, a high energy density of 26.4 W h kg−1 is still achieved. This study provides a new insight into the application of nitride-derived carbon materials in zinc-ion hybrid capacitors.
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
危险品化学品经营许可证（带存储）