NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 19
·15974-15984
·
IF 3.201
Wenqian Fan,Zhi Zhu,Yang Yu,Zhi Liu,Chunxiang Li,Pengwei Huo,Yue Qiu,Yongsheng Yan
In the present work, the ternary hybrid photocatalyst Fe3O4@g-C3N4/RGO is developed by a facile hydrothermal method, which shows a satisfactory degradation rate (90%) and stability in degrading tetracycline. The improvement in the photocatalytic activity of the ternary hybrid photocatalyst is attributed to the Fe3O4 nanobelt and RGO. As a center of oxidation–reduction, the Fe3O4 nanobelt can utilize electrons effectively. RGO with good conductivity is an outstanding electron transporter, which inhibits the recombination of electron–hole pairs. Moreover, the results of the ESR and the radical capture experiment prove that h+ and ˙O2− are the major active species in the tetracycline removal process. At the same time, the degradation intermediates of tetracycline and the photocatalytic mechanism is discussed in this paper in depth. The novel design concept is expected to be used in practical applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hanwen Zhang,Liuxue Shen,Xiaodong Geng,Jianxin Zhang,Yue Jiang,Hongting Ma,Quanli Liu,Kai Yang,Junlin Ma,Nan Zhu
Sodium superionic conductor (NASICON) structured polyanionic materials have recently attracted great attention for robust crystal structures. However, inherent properties of NASICON presents poor electrical conductivity and low energy density. Herein, non-stoichiometric synthesized strategy is used for acquiring N 3.5 MTP, effectively suppressing voltage hysteresis. Besides, as-fabricated N 3.5 MTP grains in-situ grow on MXene-rGO aerogels by sol–gel synthesis approach obtaining N 3.5 MTP@MXene-rGO. MXene-rGO aerogel as an excellent conductive matrix can effectively avoid agglomeration of Na 3.5 MnTi(PO 4 ) 3 particles and alleviate volume change of the lattice during sodium ion intercalation/deintercalation. Moreover, cross-linked network of N 3.5 MTP@MXene-rGO provides fast electron transfer and ion transport rates. The above synergistic effect and contribution of pseudocapacitance make it an excellent discharge capacity of 189 mA h g −1 at 50 mA g −1 for N 3.5 MTP@MXene-rGO, long cycles of 5000 cycles, as well as 98 mA g −1 at −30 °C (50 mA g −1 ). Prospectively, this study provides an effective strategy for improving electrochemical performance of NASICON-type cathode for sodium batteries.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2019
·
IF 3.517
Yiwen Hu,Yongxin Wang,Zhixiang Zeng,Haichao Zhao,Jinlong Li,Xuewu Ge,Liping Wang,Qunji Xue,Chunlong Mao,Shanjun Chen
Attractive tribological performance made graphene(G)-based material great potential to be used as an effective nanoadditive in water-based lubricant. Herein, this paper put forward a facile, simple and environment-friendly method to modify the reduced graphene oxide (RGO) by β-lactoglobulin (BLG) noncovalently, accompanied with an in-depth investigation on the lubricating properties of BLG-RGO in water solution. The results indicated that the RGO decorated with BLG could stably disperse in water for a long time (>8 months) and exhibit excellent friction-reducing (∼37%) and anti-wear (∼45%) property. The outcome of this research implying that the BLG-RGO as potential green nanoadditives in water-based lubricant and thus may help in practical application by industry.
研究领域:
材料科学
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化学工程
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纳米技术
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摩擦学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2024
·
IF 1.3
Ganwen Zhang,Junjie You,Qi Chen,Zhijin Xiong,Yourong Wang,Siqing Cheng
It is of unprecedented significance to surmount the daunting challenges of lithium-sulfur battery due to its low cost and exceptionally high energy density. Herein, the mesoporous NiCo 2 S 4 @rGO nanocomposites were fabricated solvothermally with mesoporous NiCo 2 S 4 nanoparticles dispersed on rGO and investigated as highly-efficient carriers for sulfur cathode in lithium-sulfur battery. The as-obtained NiCo 2 S 4 @rGO nanocomposites are featured with abundant mesopore, good electronic and ionic conductivity, excellent catalytic effect on the redox of lithium polysulfides conversion and strong adsorption, thus observably accelerating the redox kinetics of lithium polysulfides and suppressing the shuttle effect. Therefore, the NiCo 2 S 4 @rGO@S electrode delivers a high reversible specific discharge density of 785 mAh g −1 at 0.1 C after 100 cycles and exhibits good rate capability and cycling stability, verifying its great promising for the commercial application of lithium-sulfur battery.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Kang Wei,Jun Li,Xiao Sun,Meng Shao,Jianguo Tang,Soowohn Lee
rGO/Ni(OH) 2 /Ni 3 S 2 composite electrode materials were successfully synthesized on Ni foam (NF) by a two-step hydrothermal process and subsequent alkalization treatment. To investigate the influence of reaction time in the secondary hydrothermal process, three different hydrothermal times (4 h, 6 h, 8 h) were set. The results showed that the electrode had the highest specific capacitance of 2260 F·g −1 at 1 A·g −1 at the hydrothermal reaction time of 6 h, (4 h: 1807.8 F·g −1 , 8 h: 1358.3 F·g −1 ). In addition, it exhibited prominent rating capability and cycling stability, with 41.7% retention at 10 A·g −1 and 137.9% retention after 5000 cycles at 50 mV⋅s −1 . Finally, the assembled hybrid supercapacitor (HSC) with rGO/Ni(OH) 2 /Ni 3 S 2 /NF (6 h) and active carbon displayed outstanding electrochemical performance. When the power density was 400.5 W⋅kg −1 , it showed the energy density (25.2 Wh⋅kg −1 ), proving its potential as electrode materials for HSC devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 4
·707
·
IF 5.3
Lazhen Shen,Jinlong Dong,Bin Wen,Xiangping Wen,Jianhui Li
Acetaminophen (AC) is one of the most popular pharmacologically active substances used as an analgesic and antipyretic drug. Herein, a new type of hollow Fe3O4-rGO/GCE electrode was prepared for electrochemical detection of AC through a three-step approach involving a solvothermal method for the synthesis of hollow Fe3O4and the chemical reduction of graphene oxide (GO) for reduced graphene oxide (rGO) and Fe3O4-rGO nanocomposites modified on the glassy carbon electrode (GCE) surface. The as-prepared Fe3O4-rGO nanocomposites were characterized using a transmission electron microscope (TEM), X-ray diffraction (XRD), and a magnetic measurement system (SQUID-VSM). The magnetic Fe3O4-rGO/GCE electrodes were employed for the electrochemical detection of AC using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave voltammetry (SWV) and exhibited an ultra-high selectivity and accuracy, a low detection limit of 0.11 µmol/L with a wider linear range from 5 × 10−7to 10−4mol/L, and high recovery between 100.52% and 101.43%. The obtained Fe3O4-rGO-modified GCE displays great practical significance for the detection of AC in drug analysis.Keywords:acetaminophen;electrochemical detection;hollow Fe3O4nanoparticles;magnetic Fe3O4-rGO/GCE electrode
研究领域:
分析化学
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纳米材料
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电化学
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药物分析
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
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2024
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IF 3.7
Qiaomei Sun,Pengjun Duan,Wenqing Zhang,Yuxuan Xie,Xiang Ni,Jianzhong Zheng
Photocatalytic technology is an attractive option for environmental remediation because of its green and sustainable nature. However, the inefficient utilization of solar energy and powder morphology currently impede its practical application. Here, we designed a floatable photocatalyst by anchoring 0D Cu2(OH)PO4 (CHP) nanoparticles on 2D graphene to construct 0D/2D CHP/reduced graphene oxide (rGO) aerogels. The CHP/rGO aerogels have interconnected mesopores that provide a large surface area, promoting particle dispersion and increasing the number of active sites. Moreover, the optical response of the CHP/rGO aerogel has been significantly expanded to cover the full spectrum of the solar light. Notably, the 20%CHP/rGO aerogel displayed a high degradation rate (k = 0.178 min–1) taking methylene blue (MB) as a model pollutant under light irradiation (λ > 420 nm). The enhanced photocatalytic activity is ascribed to the rapid electron transfer in the CHP/rGO heterostructures, as supported by the DFT theoretical calculations. Our research highlights the utilization of full spectrum responsive photocatalysts for the elimination of organic pollutants from wastewater under solar light irradiation, as well as the potential for catalyst recovery using floatable aerogels to meet industrial requirements.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yongkang Li,Feitong Ren,Jiayin Li,Yao Chen,Jun Liu,Chun Yang
Chloramphenicol (CAP) has demonstrated favorable therapeutic effects against various bacteria and is widely utilized in the aquaculture industry. However, CAP has recently been classified as a carcinogen, emphasizing the importance of developing effective methods to monitor its concentration. In this study, one-dimensional/two-dimensional (1D/2D) SnO 2 /reduced graphene oxide (rGO) composites were employed to modify a glassy carbon electrode (GCE) for the electrochemical detection of CAP. The SnO 2 /rGO composite materials were synthesized via a solution reaction and calcination method. Optimal electrochemical sensing conditions, including pH values, scan rates, and accumulation parameters, were systematically investigated to demonstrate feasibility. The resulting SnO 2 /rGO/GCE achieved a current density of 154.56 µA/cm², up to 75 times higher than other modified electrodes. Furthermore, the SnO 2 /rGO/GCE exhibited a strong linear relationship within a detection range of 0.001–100 μM and an excellent limit of detection of 0.315 nM for CAP. Finally, the electrodes with optimized modifications were successfully applied to determine CAP concentrations in real lake water and milk samples. These promising results suggest that the as-fabricated SnO 2 /rGO electrode presents a novel and highly effective approach for CAP detection.
研究领域:
分析化学
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环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2019
·
IF 2.87
Chen Fu,Dawei He,Yongsheng Wang,Xuan Zhao
In this study, Co nanoparticles coated with N-doped carbon films (Co@C) were fabricated using the facile one-pot method. Further, the microwave absorption performance of Co@C prepared at different calcination temperatures was evaluated. When calcinating at 700 °C, the reflection loss values of Co@C are lower than −20 dB with a thickness of 1.5–5.5 mm. The Co particles show enhanced resonation loss with the in situ growth of Co@C on the graphene oxide surface. The presence of reduced graphene oxide (RGO) can prevent agglomeration and reduce the loading content with excellent microwave absorption performance. As expected, the minimum reflection loss of Co@C/RGO reached −44.14 dB when the loading content was only 15% in a paraffin matrix. The considerable microwave absorption performance of this composite can be attributed to the enhanced impedance matching and large interface contact as well as dipolar polarization induced by RGO. This Co@C/RGO composite exhibiting enhanced microwave ability is considered to be an excellent candidate for developing lightweight microwave-absorbing materials.
研究领域:
材料科学
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纳米技术
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电磁材料
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2019
·Vol. 11
·期 1
·1-15
·
IF 9.043
Zhang Deqing,Liu Tingting,Cheng Junye,Cao Qi,Zheng Guangping,Liang Shuang,Wang Hao,Cao Mao-Sheng
Two-dimensional (2D) nanomaterials are categorized as a new class of microwave absorption (MA) materials owing to their high specific surface area and peculiar electronic properties. In this study, 2D WS 2 –reduced graphene oxide (WS 2 –rGO) heterostructure nanosheets were synthesized via a facile hydrothermal process; moreover, their dielectric and MA properties were reported for the first time. Remarkably, the maximum reflection loss (RL) of the sample–wax composites containing 40 wt% WS 2 –rGO was − 41.5 dB at a thickness of 2.7 mm; furthermore, the bandwidth where RL < − 10 dB can reach up to 13.62 GHz (4.38–18 GHz). Synergistic mechanisms derived from the interfacial dielectric coupling and multiple-interface scattering after hybridization of WS 2 with rGO were discussed to explain the drastically enhanced microwave absorption performance. The results indicate these lightweight WS 2 –rGO nanosheets to be potential materials for practical electromagnetic wave-absorbing applications.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2025
·
IF 14.1
Xinyu Xu,Hao Wang,Xiaohan Mei,Dapeng Zeng,Zehao Yu,Shibo Liu,Ruiyan Li,Yanguo Qin
Malignant bone tumor defects are difficult to treat because of the simultaneous need for tumor treatment and bone-repair promotion. This study presents a bioactive composite scaffold (T-rGO@Au) for personalized bone defect repair and bone tumor treatment. The T-rGO@Au scaffold has a porous structure, and its mechanical properties are close to those of human cancellous bone. The T-rGO@Au scaffold can induce upregulation of osteopontin (OPN), RUNX-2, and osteocalcin (OCN) gene expression. In vivo experiments showed that the bone volume/total volume (BV/TV) ratio with the T-rGO@Au scaffold was the highest. The new bone was tightly integrated with the implant, demonstrating effective osseointegration. The T-rGO@Au scaffold locally generated high temperatures and reactive oxygen species under near-infrared excitation, and AuNPs enhanced the photothermal performance of rGO through the “antenna effect.” Furthermore, in vitro experiments showed that the tumor cell nuclei were destroyed, late-stage apoptotic cells increased, and cell morphology was severely damaged. Additionally, RNA-seq revealed that tumor cell destruction was mediated through signaling pathways, such as the MAPK pathway. In vivo antitumor experiments also demonstrated that the T-rGO@Au scaffold significantly inhibited the growth of tumor cells within 2 weeks. Thus, the T-rGO@Au scaffold provides a new treatment strategy for the development of implantable scaffolds for bone tumor defects.
研究领域:
生物医学工程
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材料科学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 4
·1291-1299
·
IF 2.2
Li Zhilei,Zhou Jianping,Xu Yan,Shang Yukui,Chen Changhua,Ran Tongtong
Effective farmland management requires real-time monitoring of plant growth status and timely response to stressors. To achieve this goal, we utilized wire organic electrochemical transistors (WECTs) to convert ion signals in plant vasculature into electrical signals in circuits, enabling the detection of ion concentrations. In our study, we employed a flexible substrate composed of a core-sheath structure nanofiber yarn impregnated with poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) as a semiconductor channel. The gate was made of silver wire, while silver paste was sprayed at both ends of the core-sheath yarn to serve as a source and drain. This configuration allowed us to construct a wire organic electrochemical transistor that exhibited modulation performance and sensitivity at low voltages, with a transconductance of 1.07 × 10 –4 S. We conducted sodium ion concentration testing and successfully achieved the sensing of sodium ions at concentrations ranging from 10 –4 to 10 –1 M. This study lays the groundwork for the future development of organic electrochemical transistors in plants, enabling in situ detection of sodium ion concentrations under salt stress.
研究领域:
农业科学
·
材料科学
·
植物生理学
✓ 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）