MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Mianke Chen,Chenghong Zhang,Ruikai Liu,Kang Qiu,Youlin Gao,Yikang Qiang,Yiqing Yang,Wuyi Chai,Mahmoud A. Khalifa,Jialiang Luo,Wei Ding,Ganhong Zheng,Zhigao Sheng
Multi-layer 2D material assemblies introduce numerous interfaces that would improve microwave absorbing. Here, a 3D porous rGO/Ti 3 C 2 T x /TiO 2 heterostructure was prepared using a one-step hydrothermal synthesis. Due to the presence of the 2D/2D van der Waals heterojunction in rGO/Ti 3 C 2 T x featuring face-to-face contacts, and the 2D/0D heterojunctions in Ti 3 C 2 T x /TiO 2 , the interfacial polarization is optimized. The minimum reflection loss (RL min ) achieves −37.31 dB, and the effective absorption bandwidth (EAB) extends to 6.45 GHz (with<−10 dB). These results not only shed light on understanding and enhancement of interfacial effects, but also provides an appealing mode for the implementation of heterogeneous interfacial engineering using tailored 2D hierarchical structures.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 7
·072501
·
IF 3.1
Hui-Ting Hu,Jiang-Tao Xu,Bing-Lun Li,Guo-Cheng Han,Xiao-Zhen Feng,Heinz-Bernhard Kraatz
Naringenin (NRG), a flavanone compound present in citrus fruits, has a variety of beneficial physiological active functions such as antioxidant, anti-inflammatory, and hypoglycaemic. In this study, an sensor was constructed by electrodeposition and used for the electrochemical study of NRG. Reduced graphene oxide (rGO) and glutathione (GSH) showed the ability to synergistically amplify NRG signals and possessed good linearity in the concentration range of 10.00–1200.00 μmol l−1. The linear equation is Ip = 0.0776logc + 0.9353 (R2 = 0.9901), and the limit of detection is 3.33 μmol l−1. The sensor performed well in terms of reproducibility, stability, and selectivity, which in turn enabled the detection of NRG in tomatoes. The average recovery of the sensor is 95.68% to 111.92%, with RSD less than 11.89%. The results were also verified by Ultraviolet–visible spectroscopy(UV-vis). Furthermore, density-functional theory was employed to analyse the front track of the NRG, speculating that the NRG underwent a transfer of two electrons and two protons.
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Shuohua Zhou,Weiming Xiang,Qiang Zhong,Shaogui Yang,Gancheng Zuo,Zhe Xu,Qiuyi Ji,Jijie Kong,Chenmin Xu,Bing Yang,Dunyu Sun,Yinhao Dai,Yazi Liu,Huan He,Shiyin Li
Sulphate radical (SO 4 · - ) -based advanced oxidation process (SR-AOP) is a promising sewage treatment technology. Reduced graphene oxide (rGO) supported Co 3 O 4 composites were synthesized by a hydrothermal method for the degradation of iohexol (IOH) in the rGO/Co 3 O 4 /peroxymonosulfate (PMS) system. Experimental results show that rGO/Co 3 O 4 possessed much better PMS activated ability than pure GO or Co 3 O 4 , which is ascribed to the summation of rGO and Co 3 O 4 . The efficiency of rGO/Co 3 O 4 composite, single GO and Co 3 O 4 nanocrystals for the degradation of IOH were 98.7%, 15.8% and 79.8% at 15 min, and their corresponding reaction rate constants ( k app ) were 0.21 min −1 , 0.0077 min −1 and 0.080 min −1 , respectively. The results of active species capture experiment and electron paramagnetic resonance (EPR) experiment, showed that singlet oxygen is the main active species, which is non-radical degradation. rGO is conducive to the electron conduction of Co 3 O 4 , thus improving the efficiency of PMS activation. The system is simple and efficient, which is an effective technology to remove IOH.
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 9
·2144
·
IF 3.1
Haiwei Hu,Yanyan Guo,Jiang Zhao
Flexible electronic products, with their characteristics of flexibility and wearability, have attracted significant attention and have become an important direction in the research and development of the electronics industry. Planar micro-supercapacitors (MSCs) with flexible composite electrodes can provide reliable energy support for these products, propelling their further development. The research employed a quick, effective, and environmentally friendly method of laser scribing to create shape-controllable flexible composite electrodes on composite films of Poly(3,4-ethylenedioxythiophene) and graphene oxide (PEDOT/GO), which were subsequently assembled into MSCs. An analysis of the composite electrode morphology, structure, and elemental distribution was conducted through the utilization of SEM, TEM, and XPS techniques. Following this, a comprehensive evaluation of the electrochemical performance of the flexible MSCs was carried out, which included cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and assessment of cyclic stability. The analysis of the CV results indicated that the MSCs achieved the areal capacitance of 5.78 mF/cm2at 5 mV/s. After 5000 cycles at a current density of 0.05 mA/cm2, the capacitance retention rate was 85.4%. The high areal capacitance and strong cycle stability of MSCs highlight the potential of PEDOT/reduced graphene oxide (PEDOT/rGO) electrodes in electrode applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xiao-Zhen Feng,Kun-Zhi Wang,Ke-Hang Song,Guo-Cheng Han,Bing-Lun Li,Heinz-Bernhard Kraatz
Moxifloxacin (MOX) and gatifloxacin (GAT) are structurally similar and possess close oxidation peak potentials, making it difficult for simultaneous detection by electrochemical methods. To address this, an electrochemical sensor was constructed with reduced graphene oxide (rGO) and copper porphyrin complex (Cu-TCPP), achieving signal amplification and simultaneous detection of MOX and GAT. The linear relation range from 5.00 to 600.00 μmol·L −1 for MOX (LOD is 1.34 μmol·L −1 ) and 10 to 300 μmol·L −1 for GAT (LOD is 0.59 μmol·L −1 ). When applied to water samples, it achieved recoveries of 100.09–112.02 % with a relative standard deviation (RSD) of less than 6 % for MOX, and 97.27–110.72 % with an RSD of less than 4 % for GAT. Further calculations indicated that the electro-oxidation of GAT involved two protons and two electrons.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zhengyan Hao,Zhiwei Zhang,Xijia Yang,Xuesong Li,Yang Gao,Liying Wang,Yuxin Huang,Wei Lü
Zinc-ion hybrid supercapacitors (ZIHSCs) have garnered widespread attention due to their integration of the excellent characteristics of both batteries and capacitors. This study employs a synergistic strategy combining hydrothermal and high-temperature calcination methods to construct a nanosphere-structured T-Nb 2 O 5 composite anode material coated with reduced graphene oxide (rGO) on a flexible carbon cloth (CC) substrate (T-Nb 2 O 5 /rGO@CC), in conjunction with a hierarchical super-mesoporous activated carbon cathode (ACcp@CC) derived from discarded citrus peel. The rGO coating structure suppresses the volume expansion of the internal nanostructure caused by charging and discharging, effectively enhancing mechanical stability. At the same time, the three-dimensional conductive network of rGO effectively compensates for the poor intrinsic conductivity of Nb 2 O 5 . The constructed ZIHSC delivers a capacitance of 718.56 mF cm −2 at 1 mA cm −2 , and achieves a maximum energy density of 399.20 μWh cm −2 at 1 mW cm −2 . Furthermore, after 50,000 ultralong-cycle, the capacity retention rate is 104.17 %. The assembled flexible device not only possesses excellent mechanical properties but also delivers a specific capacitance of 389.89 mF cm −2 at 1 mA cm −2 , providing long-term power for various electronic devices. This study provides a solid theoretical reference for the design of stable composite structures and the investigation of ultra-long cycling performance in niobium-based electrode materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 25
·1-15
·
IF 2.8
Yan Yuefeng,Cheng Ziyan,Ma Guansheng,Chen Tao,Gao Boshi,Liu Yuhao,Huang Xiaoxiao
Reduced Graphene Oxide (RGO) has been proved to be a promising electromagnetic wave absorption (EMWA) material candidate owing to its superior electrical and dielectric properties, along with rich potential for structural design. However, the complicated synthesis process and the contradiction between impedance matching and attenuation capacity have hindered the further development and application of graphene-based absorbing materials. Herein, a Fe nanoparticle/RGO composites was synthesized through a facile in-situ chemical reduction process. The configuration of Fe nanoparticles regulates the permittivity and permeability of RGO and balances the impedance matching. The dipole polarization caused by the residual oxygen-containing functional groups in RGO, coupled with the interfacial polarization loss caused by the Fe/RGO interface, enhance the dielectric loss capacity, contributing to microwave loss in the high-frequency range. The natural resonance and exchange resonance caused by the nano Fe particles enhance the microwave loss capacity in the low-frequency range. Benefitting from the synergistic enhancement from dielectric loss and magnetic loss, Fe/RGO composites exhibit the characteristic of daul-band absorption. Notably, the sample FG-0.25 achieved an effective absorption bandwidth ( EAB ) of 5.33 GHz and a minimum reflection loss ( RL min ) of −48.9 dB. The absorption peaks in the low-frequency band can encompass a significant portion of the C-band. This research provides unique insights for the advancement of environmentally friendly and energy-efficient RGO based EMWA materials.
✓ 已验证
产品关联
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 ).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FERROELECTRICS
·
2018
·
IF 0.728
Zhiyang Yuan,Yanfen Xue,Lingna Sun,Yongliang Li,Hongwei Mi,Libo Deng,Weiliang Hong,Xiangzhong Ren,Peixin Zhang
LiFePO4/reduced graphene oxide composites (LiFePO4/RGO) were synthesized via a simple solid phase combined with carbothermal reduction method. The samples were characterized by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). Furthermore, cyclic voltammetry (CV), electrochemicaal impendence spectroscopy (EIS) and galvanostatic charge/discharge tests were conducted to further study the electrochemical properties of LiFePO4/RGO composites. The initial discharge specific capacity of LiFePO4/RGO was 151.5 mAh g−1 at 0.1C, and after 50 cycles, it still remains 149.2 mAh g−1. The results reveal that LiFePO4/RGO composites improved the discharge specific capacity and rate charge-discharge performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 17
·5749-5757
·
IF 7.393
Jiankui Zhou,Hanfang Feng,Yadong Wang,Qingqing Sun,Yingliang Liu,Xuying Liu,Li Zhang,Shaokui Cao
Random resistive access memory (RRAM) devices with a simple structure, low power consumption, and tunable switching behavior have emerged as promising candidates to simulate biological synapses. Here, we demonstrate solution-processable RRAM devices with FeC–rGO nanocomposites by intercalating nano-aggregating ferrocenes (FeCs) between the reduced graphene oxide (rGO) sheets, in which FeCs anchor on the surface of rGO through π–π stacking interactions. The Al/FeC–rGO/ITO devices fabricated by spin-coating exhibit a low SET/RESET voltage of −1.7 V/+2.1 V and a high ON/OFF ratio of 108, which results from the formation/rupture of conductive paths between rGO sheets gated by the redox of FeCs. Besides, the devices show high repeatability, excellent durability and favorable flexibility. In addition, the obtained device can be utilized to simulate the potentiation and depression of synapses by applying a pulse voltage below VSET, further contributing to image pattern recognition. Thus, this approach aims to fabricate information storage devices for future use in artificial intelligence.
研究领域:
材料科学
·
神经形态计算
·
电子工程
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2015
·Vol. 40
·期 1
·372-376
·
IF 3.086
Weidong Jiang,Zhen Xiang,Bin Xu,Xiaojing Li,Fuan Liu,Guangyin Fan
Uniformly dispersed Pd nanoparticles supported on reduced graphene oxide (RGO) have been conveniently synthesized by a facile one-pot approach through the co-reduction of sodium tetrachloropalladate(II) and graphene oxide (GO) using NaBH4 as the reducing agent. The catalytic activity of Pd/RGO was investigated for aqueous hydrodechlorination (HDC) of chlorophenols at room temperature using hydrogen balloon pressure without any additives. Results indicated that Pd/RGO exhibited an excellent activity with a reaction rate of 280.0 min−1 gpd−1 for the hydrodechlorination (HDC) of 4-CP. Furthermore, the Pd nanoparticles supported on RGO can be easily recovered and reused for four times without any obvious leaching and loss of activity.
研究领域:
化学
·
环境科学
✓ 已验证
DOI
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
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）