International Journal of Electrochemical Science
·
2023
·
IF 1.5
Ji Yu,Li Li,Zishuang Yue,Zhenyu Yang,Jianxin Cai
In this work, a porous core–shell composite composed of reduced graphene oxide (rGO)-wrapped SnO 2 fibers (SnO 2 fibers/rGO composite) was fabricated through electrospinning assisted by pyrolysis. The special core–shell structure showed that porous SnO 2 fibers as the “core” were completely protected by multilayer rGO as the “shell.” Lithiation of SnO 2 occurred through Li diffusion through the rGO wrapped into the SnO 2 fibers, and natural void space facilitated SnO 2 expansion upon lithiation. This unique structure effectively prevented the aggregation and pulverization of SnO 2 fibers during lithiation and delithiation. The SnO 2 fibers/rGO composite electrode presented a super-high discharge capacity of 2,141 mAh g -1 at a current density of 0.4 A g -1 , 1,858 mAh g -1 at 0.8 A g -1 , 1,520 mAh g -1 at 1.6 A g -1 , and 874 mAh g -1 at 2.0 A g -1 after 10 cycles. The electrode showed a discharge capacity of 658 mAh g -1 at a current density of 4 A g -1 after 1,000 cycles.
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DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Hualin Jiang,Qi Wang,Pinghua Chen,Huitao Zheng,Jinwen Shi,Hongying Shu,Yanbiao Liu
The development of advanced and robust photocatalysts is vital for efficient photocatalytic degradation of the antibiotic tetracycline . Herein, a hierarchical heterojunction (Bi)BiOBr/rGO was facilely synthesized by employing an in-situ reduction strategy. An obvious synergistic effect between adsorption and photocatalysis was observed. A >98% tetracycline degradation efficiency was obtained within 20 min, and high performance could be maintained for over 50 h in a continuous operation without any post-treatment. The experimental and DFT calculation results suggested that there existed a built-in electric field between the interfaces, leading to the fast electron migration. Furthermore, rGO could significantly enhance the tetracycline adsorption, and Bi largely suppressed the charge carrier recombination owing to the surface plasmon resonance (SPR) effect. A possible tetracycline degradation pathway was proposed based on the HPLC-MS analysis. This study provides pathways for the rational design of advanced and robust photocatalysts to effectively degrade emerging contaminants in practical continuous-flow configurations.
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DOI
高影响因子
Small
·
2025
·
IF 12.1
Yan Wang,Zhiyu Zhou,Xiaofan Zhang,Zheng Liu,Huifang Lv,Xianghu Huo,Chunming Gao,Bing-Ni Gu,Yang Zhao,Zexiang Chen,Ruxiang Xu,Yu-Lun Chueh
Multicomponent transition metal heterostructures is constructed through a heteroatomic doping method sandwiched by the dual carbon layers. The promising strategy combines iron and manganese ions into a novel Fe 2.57 Mn 0.43 O 4 heterostructure on the surface of the rGO nanosheets, followed by sulfur-doping and calcination processes to achieve S 2− -doped-rGO@Fe 2.57 Mn 0.43 O 4 @C heterostructure. Note that S 2− -doped Fe 2.57 Mn 0.43 O 4 nanorods encapsulated by the carbon coating layers on the rGO nanosheets as the backbone are expected to restrict nanorods from collapsing during the charge–discharge processes. The S 2− -doping in heterostructures can build stabilized solid electrolyte interphase on or near the surface of the Fe 2.57 Mn 0.43 O 4 nanorods. Moreover, Mn heteroatomic doping can optimize the crystalline structure of the Fe 2.57 Mn 0.43 O 4 . The exposed active sites and kinetics of S 2− -doped-rGO@Fe 2.57 Mn 0.43 O 4 @C heterostructure are significantly improved. As a result, the as-assembled batteries can achieve a high capacitance of 1410 F g −1 at 1 A g −1 with a high capacitance retention of 75% at 16 A g −1 . Furthermore, the batteries are guaranteed a prolonged cycle life of 1000 cycles with 92.3% capacitance retention. The as-assembled NiAl-LDH (Ni-Al layered double hydroxide)//S 2− -doped-rGO@Fe 2.57 Mn 0.43 O 4 @C battery leads to excellent electrochemical properties (65.4 Wh kg −1 at 763.2 W kg −1 , 9925.8 W kg −1 at a 43.9 Wh kg −1 ).
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 3
·1-13
·
IF 2.6
Li Shuo,Tao Yulun,Wu Yuannan,zhu Shanshan,Khademi Sara,lv Yinru,Tai Yanlong,Wang Chaoran
The high integration and multifunctionality in flexible electronic device play an important role in its development. In this study, we developed multifunctional hydrogels integrated with supercapacitive, photoelectric, and strain-sensing capabilities. The hydrogel composite consists of PAM/PVA matrix with polyaniline (PANI) and reduced graphene oxide (rGO) as conductive components. Two different acid dopants, citric acid (CA) and hydrochloric acid (HCl), were employed to investigate their impact on photoelectrochemical capabilities of hydrogels. Both CA-doped and HCl-doped hydrogels exhibited remarkable supercapacitive performance, achieving areal capacitances of 492 mF/cm 2 and 538 mF/cm 2 , respectively. Furthermore, both hydrogels demonstrated photosensitivity towards shorter wavelengths such as ultraviolet (380 nm) and blue (475 nm) light. Lastly, the proposed hydrogels serving as highly sensitive strain sensors was verified through effectively sensing arm bending movements.
研究领域:
材料科学
·
电化学
·
光电子学
·
传感器
·
纳米技术
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DOI
高影响因子
iScience
·
2022
·
IF 6.107
Yimin Zhao,Quan Zhang,Jianbing Ma,Ruobing Yi,Lu Gou,Dexi Nie,Xiaona Han,Lihao Zhang,Yuetian Wang,Xintong Xu,Zhe Wang,Liang Chen,Ying Lu,Shengli Zhang,Lei Zhang
The preparation technology of unconventional low-dimensional Cu 2 O monocrystals, which exhibit specific crystal planes and present significantly unique interfacial and physicochemical properties, is attracting increasing attention and interest. Herein, by integrating a high-temperature oxidation process under vacuum and a pure-water incubation process under ambient conditions, we propose the self-assembled growth and synthesis of quasi-two-dimensional Cu 2 O monocrystals on reduced graphene oxide (rGO) membranes. The prepared Cu 2 O crystals have a single (110) crystal plane, regular rectangular morphology, and potentially well conductivity. Experimental and theoretical results suggest that this assembly is attributed to the pre-nucleation clusters aggregation and directional attachment of Cu and O on the rGO membranes in aqueous environment and cation-π interactions between the (110) crystal plane of Cu 2 O and rGO surface. Our findings offer a potential avenue for the discovery and design of advanced low-dimensional single-crystal materials with specific interfacial properties in a pure aqueous environment.
研究领域:
材料科学
·
纳米技术
·
表面化学
·
晶体学
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Xu Han,Guoping Liu,Li Wu,Xiubo Min,Zhongsheng Wen
Due to the large ionic radius of Na⁺, sodium storage is often accompanied by sluggish ion transport and limited interfacial reaction kinetics, posing significant challenges for the development of high-performance sodium-ion battery electrode materials. To address these issues, a Co-modified WS 2 /rGO composite was constructed via a hydrothermal method combined with subsequent thermal treatment. The Co-WS 2 /rGO electrode delivers a reversible capacity of 283.5 mAh g -1 after 300 cycles at a current density of 2 A g -1 , along with favorable rate capability. Kinetic analyses reveal a higher surface-controlled contribution and lower charge-transfer resistance for Co-WS 2 /rGO compared with WS 2 /rGO. Operando electrochemical analyses further reveal reduced polarization and improved reaction reversibility during Na⁺ storage. These results demonstrate that Co modification combined with rGO incorporation is an effective strategy for improving the interfacial electrochemical kinetics and sodium-storage performance of WS 2 -based anodes. Download: Download high-res image (196KB) Download: Download full-size image
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 7.1
Mengru Wang,Biao Zhang,Wen-Sheng Zou,Jinhui Zhang,Yaqin Wang
A self-cleaning ultrafiltration membrane with electrically switchable antifouling and antibacterial functions was developed by incorporating a g‑C 3 N 4 /reduced graphene oxide (rGO) composite into a polyvinylidene fluoride (PVDF) matrix. At + 1.5 V, the optimized membrane (M3, 7.5 wt% g‑C 3 N 4 ) achieved a pure water flux of 115.97 L·m −2 ·h −1 , and a BSA flux retention 85.6 % (51.35 L·m −2 ·h −1 ) after 3 h, outperforming the control membrane (M0) with 76.57 L·m −2 ·h −1 , and 59.2 % retention (35.53 L·m −2 ·h −1 ). The M3 membrane achieved a BSA rejection of 99.70 %, a flux recovery ratio (FRR) of 93.86 %, and an antibacterial efficiency of ∼99.7 % against E. coli under dark conditions. The superior self-cleaning performance is attributed to the synergistic effects of enhanced electrostatic repulsion and electrocatalytic generation of reactive oxygen species (ROS). This work offers a practical strategy for designing smart separation membranes with on-demand antifouling and self-cleaning capabilities for advanced water purification.
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DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Weibin Deng,Qingyang Wu,Chaohui Peng,Jiaolong Liu,Keke Li,Rui Zhou,Peng Chang,Hao Jiang,Yating Zhang,Hongjing Wu
The urgent need for efficient electromagnetic (EM) wave absorbing materials is driven by the increasingly severe issue of EM radiation. Heterostructures assembled from nanoscale building blocks, not only inherit the advantages from the single component but also create novel properties. Herein, the CoNiO 2 nanowires were grown in situ and tightly anchored onto reduced graphene oxide (RGO) nanosheets via a hydrothermal process followed by annealing treatment. The aggregation and restacking of RGO nanosheets is inhibited by the CoNiO 2 nanowires. The construction of 1D/2D heterojunction not only effectively reduces the conductivity of RGO, thereby improving the impedance matching of CoNiO 2 /RGO composites, but also brings about strong interface polarization that governs high-frequency polarization loss. Furthermore, the microwave absorption performance of the CoNiO 2 /RGO composites could be finely tuned by varying the precursor content. Benefiting from the multiple advantages of the 1D/2D heterojunction, the optimized CoNiO 2 /RGO composite at a low filler loading of 20 wt% achieves a minimum reflection loss value of −53.75 dB and an effective absorption bandwidth of 4.70 GHz. Furthermore, the actual effectiveness of the composite is verified through radar cross-section simulation. This work opens a new avenue to enhance EM wave absorption performance of 2D graphene-based heterojunctions.
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lei Gao,Ruirui Yue,Jingkun Xu,Zhen Liu
In this research, a ternary nanocomposite, based on iron oxide (Fe 2 O 3 ), reduced graphene oxide (rGO) and PEDOT had been successfully synthesized via one-pot method for the electrochemical detection of caffeine. The obtained nanocomposite Fe 2 O 3 /PEDOT/rGO was characterized by SEM, EDS, XRD, XPS and Raman spectroscopy to confirm the morphology, structure and composition. In addition, the electrochemical behaviors of caffeine on the nanocomposite modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. The results demonstrated that the Fe 2 O 3 /PEDOT/rGO nanocomposite exhibited excellent electrocatalytic activity to caffeine. Under the optimized conditions, the Fe 2 O 3 /PEDOT/rGO modified glassy carbon electrode showed a wide linear range of 1.0 × 10 -6 to 8.0 × 10 -4 M with the correlation coefficient of 0.992 and a detection limit of 3.3 × 10 -7 M for the determiantion of caffeine. Furthermore, the modified electrode displayed high sensitivity and selectivity, good reproducibility and long-term stability in subsequent experiments. It was also successfully used to determine caffeine in beverage samples.
研究领域:
材料科学
·
电化学
·
分析化学
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DOI
高影响因子
IONICS
·
2023
·Vol. 30
·期 2
·1075-1087
·
IF 2.8
Zhou Jingkai,Xiao Lijuan,Zhou Song,Liu Jiaqin,Huang Lvhang,Chen Yan
Obtaining electrode materials with excellent electrochemical properties is always a challenge in the research of new energy materials. This paper presents a novel composite material prepared using a simple method, which involves embedding core–shell Co 3 O 4 @SiO 2 nanoparticles onto highly conductive reduced graphene oxide (rGO) with excellent electrochemical performance. The results indicate that the encapsulation of the polymer with the core–shell material enhances the electrochemical performance. In this process, graphene oxide is reduced to reduced graphene oxide (rGO) by the hydrothermal method, and then the prepared core–shell Co 3 O 4 @SiO 2 nanoparticles are embedded into the network structure of reduced graphene oxide (rGO). In addition, we investigate the optimal mass ratio of the core–shell material Co 3 O 4 @SiO 2 and rGO in the Co 3 O 4 @SiO 2 /rGO composite. We prepare composites with different ratios of 4:1, 2:1, 4:3, 1:1, and 4:5, Co 3 O 4 @SiO 2 /rGO. The experimental results illustrate that when the current density is 0.4 A/g, the specific capacitance of the composite Co 3 O 4 @SiO 2 /rGO (1:1) is up to 216 F/g, and the volumetric capacitance is 372 F cm −3 , which is more than fivefold higher than that of the core–shell material Co 3 O 4 @SiO 2 . Such large performance improvement is mainly attributed to the addition of rGO which can improve the conductivity of the entire composite material and the aggregation of Co 3 O 4 @SiO 2 , thus providing more active sites. This study confirms that the electrochemical properties of graphene oxide can be greatly improved by the combination of hydrothermal reduction graphene oxide with core–shell material Co 3 O 4 @SiO 2 , which provides a certain reference value for the further research of high-performance electrode materials.
研究领域:
材料科学
·
能源存储与转换
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DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2016
·Vol. 74
·期 3
·639-646
·
IF 1.064
Zhang Zhen,Zhang Junya,Ye Xiaokun,Hu Yongyou,Chen Yuancai
Ethylenediaminetetraacetic acid (EDTA) forms stable complexes with toxic metals such as nickel due to its strong chelation. The electro-Fenton (EF) process using a cathode made from palladium (Pd), reduced graphene oxide (RGO) and carbon felt, fed with air, exhibited high activities and stability for the removal of 10 mg L −1 EDTA-Ni solution. Pd/RGO catalyst was prepared by one-pot synthesis; the scanning electron microscopy and X-ray diffraction analysis indicated nanoparticles and RGO were well distributed on carbon felt, forming three dimensional architecture with both large macropores and a mesoporous structure. The cyclic voltammetric results showed that the presence of RGO in Pd/RGO/carbon felt significantly increased the current response of two-electron reduction of O 2 (0.45 V). The key factors influencing the removal efficiency of EDTA-Ni, such as pH, current and Fe 2+ concentration, were investigated. Under the optimum conditions, the removal efficiency of EDTA-Ni reached 83.8% after 100 min EF treatment. Mechanism analysis indicated that the introduction of RGO in Pd/RGO/carbon felt significantly enhanced the electrocatalytic activities by inducing •OH in the EF process; direct H 2 O 2 oxidation still accounted for a large amount of EDTA-Ni removal efficiency.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 41
·19300-19308
·
IF 4.682
Yang Yue,Ma Tianhui,Jia Jianming,Lü Wei
Recently, pressure sensor based on micro-structured film has gained attentions for applications in future wearable electronic devices, because of their portability and low energy consumption in operation. Here, we report a sensitive pressure sensor based on a wave-structured rGO film, which was prepared by a stretch-relaxation approach on an elastic substrate. When the stretch ratio of the pressure sensor is 180%, the sensitivity can reach 2.64 kPa −1 (0–30 kPa), and it has good electrical stability, fast response time of 12 ms and fast recovery time of 20 ms. In addition, in the present work, pressure sensors are used to detect physiological signals including pulse, finger bending, speech recognition, breathing, etc. At the same time, the assembled sensor array realizes three-dimensional mapping of spatial pressure. The results show that the changes of pressure sensor Δ I / I 0 are consistent with the sensitivity test results under different pressures.
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DOI
高影响因子
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