JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Jian Liu,Ying-Ge Xu,Ling-Bin Kong
Metal sulfide is the most promising anode material for sodium storage devices due to its high theoretical capacity and low cost. However, the practical application of metal sulfide is largely hindered by huge capacity fading during the sodiation/desodiation process. Here mixed bimetallic sulfides grown on reduced graphene oxide (MoS 2 /CoS 2 -RGO) are prepared via a facile hydrothermal method. MoS 2 /CoS 2 -RGO displays a unique 2D structure which provides large specific surface area for pseudocapacitive charge storage, polyvalent ion reaction for ultrahigh capacity, and a heterostructure to high Na-ion diffusion rate. The optimized MoS 2 /CoS 2 -RGO shows a considerable reversible capacity of 593.6 mA h g −1 at 100 mA g −1 over 50 cycles and a high rate capability of 215.8 mA h g −1 even at a high specific current of 5000 mA g −1 . A reaction kinetics and galvanostatic intermittent titration technique analysis indicates that MoS 2 /CoS 2 -RGO possesses fast pseudocapacitive charge storage and high Na-ion diffusion rate, benefiting the kinetics balance between anode and cathode. With this special structure, SICs containing the anode deliver a high specific energy of 152.98 W h kg −1 at 562.5 W kg −1 . Similarly, the SIB exhibits a good capacities of 64 mA h g −1 at the high rates of 5C over 100 cycles.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Ze Lin,Xiulan Weng,Nasreen Islam Khan,Gary Owens,Zuliang Chen
The annual influx of antimony (Sb) into the environment due to the widespread use of Sb compounds in industry and agriculture has become of global concern. Herein, a functional nanomaterial composite based on loading bimetallic iron/nickel nanoparticles on reduced graphene oxide (rGO-Fe/Ni) was initially prepared in a one-step phytogenic synthesis using a green tea extract. Subsequently, when applied for Sb(III) removal, the removal efficiency of rGO-Fe/Ni reached 69.7% within 3 h at an initial Sb concentration of 1.0 mg·L −1 . Advanced materials characterization via scanning electron microscopy-energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy revealed that Sb(III) was initially adsorbed onto the surface of rGO and then oxidized to Sb(V). This result was also supported by adsorption isotherm, kinetics, and thermodynamic analysis. These studies revealed that the adsorption was spontaneous and endothermic, following a Langmuir adsorption model with pseudo-second-order kinetics and allowed a Sb(III) removal mechanism based on adsorption and catalytic oxidation to be proposed. Furthermore, when rGO-Fe/Ni was practically used to remove Sb(III) in groundwater a 95.7% removal efficiency was obtained at 1 mg·L −1 Sb(III), thus successfully demonstrating that rGO-Fe/Ni has significant potential for the practical remediation of Sb contaminated groundwater.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Aml E. Shrshr,Baoji Miao,Mohamed M. Elsenety,Muhammad Shahid Nadeem,Muhammad Asad,Irshad Ahmad Mir,Liaqat Rasheed,Ahmed Zaki Alhakemy,Muhammad Yasir,Jinbo Bai,Jianmin Zhang,Mohammed A. Al-Tahan
The advancement of lithium-sulfur (Li-S) batteries could be enhanced by effective catalysts that limit the shuttling of polysulfides (LiPSs) and promote their transformation. Here, a unique one-step hydrothermal approach is used to produce tantalum pentoxide nanoparticles wrapped in reduced graphene oxide (Ta 2 O 5 @rGO nanohybrid) and operate as an effective functional separator for Li-S batteries. The Lewis acid-base chemical interactions between sulfur species and Ta atoms achieve strong Ta-S and Li-O bonds, providing Ta 2 O 5 catalytic properties in Li-S cells. The adsorption energy data, calculated by Density Functional Theory (DFT), indicate that Ta 2 O 5 @rGO has robust adsorption capacity for all lithium polysulfides, exhibiting enhanced stability for larger polysulfides (Li 2 S 6 and Li 2 S 8 ). Moreover, rGO-induced oxygen defects in Ta 2 O 5 could accelerate interfacial electron transport and LiPSs entrapment, diffusion, and transformation. By enhancing the Li-S cell's capacity to 485 mAh g −1 after 700 cycles at 1.0C, the functional separator of Ta 2 O 5 @rGO-PP verifies its low-capacity degradation per cycle and excellent long-cyclic performance. Despite difficult circumstances like a sulfur loading of 4.5 mg cm −2 and an electrolyte/sulfur (E/S) ratio of 6.0 μL mg −1 , Ta 2 O 5 @rGO-PP still managed to show a high capacity of 736 mAh g −1 after 100 cycles.
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高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 9
·3472-3484
·
IF 4.569
Lei Xu,Zhipeng Gong,Yinglin Qiu,Wenbo Wu,Zunxian Yang,Bingqing Ye,Yuliang Ye,Zhiming Cheng,Songwei Ye,Zihong Shen,Yuanqing Zhou,Qiaocan Huang,Zeqian Hong,Zongyi Meng,Zhiwei Zeng,Hongyi Hong,Qianting Lan,Tailiang Guo,Sheng Xu
Metal sulfides, one kind of electrode material with very high theoretical capacity, have been widely studied for use in lithium and sodium ion batteries. However, there are some problems hindering their applications in electrodes, such as low conductivity and volume expansion. The MOF introduces metals with different coordination strengths into an existing MOF structure, which improves the performance of the electrode to a certain extent. In this paper, Fe/Zn bimetallic MOF rod-like superstructure was prepared based on Ostwald theory. Accompanied by sulfuration, the MOF was effectively combined with MoS2 and GO, and the objective materials Fe7S8-C/ZnS-C@MoS2/rGO composites were successfully prepared. The MOF material provides a good frame and an efficient electron transport path, while the robust rGO wall effectively inhibits the pulverization of materials during the lithium/sodium intercalation/escalation courses. This particular material exhibited excellent cycling and rate capability performance when used in Li/Na-ion batteries. When used in Li-batteries, the electrode material delivered a specific capacity of 1598.3 mA h g−1 at 0.1 A g−1 and remained at 1196.7 mA h g−1 even after about 100 cycles and further exhibited a specific capacity of 368.68 mA h g−1 at the current rate of 5 A g−1 even after 1000 cycles, respectively. As for sodium batteries, these electrode materials exhibited an initial reversible capacity of 1053.6 mA h g−1 at 0.1 A g−1 and the reversible capacity was still as high as 592.2 mA h g−1 after 200 cycles. It is perhaps that this composite material with its particular architecture and composition is greatly beneficial for electron transfer and Li/Na ion diffusion. In the repeated physicochemical/nutrifying process, the appropriate distance between adjacent MOFs is of great help in preventing volume changes and thus improving the electrochemical performance.
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BIOSENSORS & BIOELECTRONICS
·
2018
·
IF 8.173
Chunyan Zhang,Shuan Zhang,Yilei Jia,Yueyun Li,Ping Wang,Qing Liu,Zhen Xu,Xinjin Li,Yunhui Dong
An ultrasensitive sandwich-type electrochemical immunosensor was designed by using gold nanoparticles (Au NPs) as the substrate material and microporous carbon spheres (CS) loading silver nanoparticles (Ag NPs) spaced Hemin/reduced graphene oxide (Hemin/rGO) porous composite materials (Ag NPs@CS-Hemin/rGO) as the detection antibodies (Ab 2 ) label for detecting carcinoembryonic antigen (CEA). The Au NPs with good electrical conductivity and biocompatibility could accelerate the electron transfer on the electrode interface and enhance the load capacity of capture antibodies (Ab 1 ). Hemin is peroxidase-like substance which has excellent catalytic ability for H 2 O 2 reduction but easy to molecular aggregation and oxidative self-destruction. Reduced graphene oxide (rGO) is a good supporting material for Hemin to mitigate this disadvantage. CS loading Ag NPs (Ag NPs@CS) as the spacer inserts into Hemin/rGO sheet can overcome the irreversible stacking of rGO, and form complex porous structure which exposes more active sites of Hemin. Moreover, Ag NPs loaded on CS also has catalytic ability for H 2 O 2 reduction. Thus the Ag NPs@CS-Hemin/rGO used as the Ab 2 label has a large working surface area and high utilization rate, which heightens the catalytic ability for H 2 O 2 reduction to amplify the current signal effectually. The current signal and the logarithm of CEA concentration presented a wide linear response range of 20 fg/mL to 200 ng/mL, and the detection limit of CEA was 6.7 fg/mL. Furthermore, the designed immunosensor exhibited a good reproducibility, selectivity and stability, which confirms a broad development prospect when applying it in early clinical detection.
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高影响因子
RSC Advances
·
2025
·Vol. 15
·期 42
·35068-35076
·
IF 4.6
Xu Han,Haozhen Li,Ling Niu
This study introduces a novel electrochemical aptasensor designed for the sensitive detection of lactate in athlete sweat. The sensor is based on a PEI-rGO-modified SPCE coupled with AuPt NPs, and utilizes Na+-assisted DNAzyme for signal amplification. The PEI-rGO modification enhances the aptasensor's conductivity, while the AuPt NPs efficiently load MB and LDNA, generating stable electrochemical signals. Furthermore, the Na+-dependent DNAzyme leverages the Na+ naturally present in sweat to activate the cleavage process, amplifying the detection signal. The sensor exhibits a strong linear relationship between current response and lactate concentration in the range of 5 × 10−3 to 10 mM, with a limit of detection (LOD) of 2.974 μM. It demonstrates excellent specificity, stability, and repeatability. The optimized aptasensor offers significant potential for real-time, non-invasive lactate monitoring, particularly in athletic performance and health assessment. This work provides a promising approach for the development of reliable, portable biosensors for tracking lactate metabolism, with implications for sports science and health management.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yu You,Mengli Wei,Likun Yang,Jingwen Wang,Yongxing Zhang,Jun Xu
The practical applications of high-performance lithium-sulfur batteries are severely hindered by the insulating nature of sulfur and intractable shuttling of the polysulfide intermediates. In this work, we report a novel MoSe 2 @rGO cathode coating consisting of two-dimensional MoSe 2 and reduced graphene oxide (rGO) as a multifunctional barrier to suppress polysulfide shuttling. Few-layered MoSe 2 nanosheets are in situ grown on the rGO surface by basal plane contact. Besides, some cotton-like MoSe 2 nanospheres assembled from porous nanosheets are decorated on the surface of rGO nanosheets. Benefitted from the strong chemical adsorption of polar MoSe 2 and excellent electrical conductivity of rGO, the MoSe 2 @rGO coatings exhibit highly efficient polysulfide anchoring and significantly enhanced electrocatalytic chemistry. Moreover, the MoSe 2 @rGO cathode coatings are much superior to its separator coatings in the recycling of the adsorbed active materials because of good interfacial conductivities. The cell with the MoSe 2 @rGO cathode coating delivers a high reversible capacity up to 1216 mAh g −1 at 0.2 C and outstanding cycling stability with a low capacity fading rate of 0.03% at 1 C over 1000 cycles.
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高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Lei Nie,Xinran Li,Jingyu Li,Yanfang Sun,Guohua Jiang
Nanoparticle-reinforced composite hydrogels have been widely used for tissue engineering and biomedicine. In particular, hydrogels with multiple functionalization, such as self-healing, antibacterial, and cytocompatible properties, can facilitate their use in wound-healing and bio-adhesive applications. In this work, the multifunctional composite hydrogels were fabricated using silk fibroin (SF) and gelatin methacrylate (GelMA), incorporating silver-doped reduced graphene oxide (Ag@rGO) nanosheets and curcumin-loaded PF127 (PF127-Cur) micelles. The obtained hydrogels possessed an interconnected microstructure, good swelling properties (250–350%), and strong adhesion to the surface of different matrices, including rubber, metal, glass, plastic, wood, and finger skin. In addition, the hydrogels demonstrated self-healing, injectability, and electrical conductivity. Furthermore, the designed composite hydrogels demonstrated good antibacterial properties against the typical bacteria, Gram-positive S. aureus and Gram-negative E. coli . CCK-8 assay, fluorescent images, and cell scratch assay confirmed that the composite hydrogels exhibited excellent cytocompatibility and cell pre-migration ability. The obtained data confirmed that the designed hydrogels possessed great potential for biomedical applications, such as wound healing and bio-adhesives.
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高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 11
·3493-3500
·
IF 4
Yingping Zheng,Dehua Yu,Wei Xu,Ke Zhang,Kaili Ma,Xinyu Guo,Yongbing Lou,Mulin Hu
Electrochemical water splitting is a potential green hydrogen energy generation technique. With the shortage of fresh water, abundant seawater resources should be developed as the main raw material for water electrolysis. However, since the precipitation reaction of chloride ions in seawater will compete with the oxygen evolution reaction (OER) and corrode the catalyst, seawater electrolysis is restricted by the decrease in activity, low stability, and selectivity. Rational design and development of efficient and stable catalysts is the key to seawater electrolysis. Herein, a high-activity bimetallic phosphide FeCoP, grown on a reduced graphene oxide (rGO)-protected Ni Foam (NF) substrate using FeCo Prussian Blue Analogue (PBA) as a template, was designed for application in alkaline natural seawater electrolysis. The OER activity confirmed that the formed FeCoP@rGO/NF has high electrocatalytic performance. In 1 M KOH and natural alkaline seawater, the overpotential was only 257 mV and 282 mV under 200 mA cm−2, respectively. It also demonstrated long-term stability up to 200 h. Therefore, this study provides new insight into the application of PBA as a precursor of bimetallic phosphide in the electrolysis of seawater at high current density.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Jiangdong Gu,Qiufeng An,Jiamin Chen,Yafei He,Wenhuan Huang
To detect acetaminophen (AMP) and dopamine (DA) effectively and rapidly, the Au nanoparticles (AuNPs） were deposited on the surface of glassy carbon electrode (GCE) modified with Molybdenum dioxide-doped Reduced graphene oxide (RGO-MoO 2 ) nanosheets to form AuNPs/RGO-MoO 2 /GCE composite modified electrode (electrochemical sensor) was prepared The modified electrode was studied regarding its composition, structure and the effect of process parameters such as the electrochemical response characteristics of AMP and DA, the pH value of the buffer, the scan rate, and the sensitivity of both simultaneous detections. The results show that the synergy between AuNPs and RGO-MoO 2 nanomaterials can promote the electrochemical reaction of AMP and DA, and the oxidation peak potential differences of the two are greater than 180 mV. The linear ranges of the modified electrode are 0.05–320 μ mol/L for AMP and 0.6–260 μ mol/L for DA, and the detection limits are 7.2 nmol/L and 13 nmol/L (S/N = 3), respectively. The prepared AuNPs/MoO 2 -RGO/GCE modified electrode has a wider linear range, lower detection limit, excellent reproducibility, stability and selectivity.
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高影响因子
Journal of Nanostructure in Chemistry
·
2023
·
IF 10.1
Yu Dexin,Zhang Feng,Yu Kai,Qu Fengyu
Cobalt-based Layered double hydroxides (Co-LDHs) through designing composite nanostructures and heterogenous junctions, has absorbed an increased concern for dual-function applications including electrochemical sensing and energy devices. Herein, the g-C 3 N 4 and GO are applied as two-dimensional (2D) scaffolds for one-pot synthesis of 2D α/β-Co(OH) 2 phase junction (α/β-Co(OH) 2 /g–C 3 N 4 /rGO, denoted as CCG) in dopamine sensing and oxygen evolution reaction (OER). The coexist of hetero-phase structure (α and β-Co(OH) 2 ) toward crystalline phase has been confirmed by various techniques. Dependent on hetero-phase structural and compositional characteristics of CCG, CCG has revealed excellent electrochemical performance: a ranking sensing response to dopamine with ppb-level sensitivity and wide detection range; and high electrocatalytic ability (38.02 mV dec −1 ) with more stable catalytic capacity toward oxygen evolution reaction (OER). The above considerable potentials for CCG ascribes to the synergistic effect of heterostructure, phase structure along with defect of α/β-Co(OH) 2 .
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jian Hu,Fei Song,Shuhan Lian,Zhichao Liu,Xiangqi Peng,Jie Wang,Guohao Li,Zhenjun Wu,Xiuqiang Xie,Nan Zhang
Assembling two-dimensional (2D) MXene nanosheets into monolithic three-dimensional (3D) structures is an efficient pathway to transfer the nanoscale properties to practical applications. Nevertheless, the majority of the preparation schemes described in the literature are carried out at relatively high temperatures, which inevitably leads to the notorious high-temperature oxidation issue of MXenes. Preparing MXene-based hydrogels at lower temperatures or even room temperature is of great research importance. In this study, we report a novel and efficient room-temperature gelation method for fabricating 3D macro-porous Ti 3 C 2 T x MXene/reduced graphene oxide (RGO) hybrid hydrogels, using anhydrous sodium sulfide (Na 2 S) as the primary reducing agent and l -cysteine as the auxiliary crosslinker. This room-temperature preparation technique successfully prevents the oxidation issue of MXenes and generates porous aerogels with excellent structural robustness after freeze-drying. As the self-standing anode for sodium-ion storage, the optimized 3D Ti 3 C 2 T x MXene/RGO electrode possesses a specific capacity of 152 mAh/g at 0.1 A/g and good cycling stability with no significant capacity degradation after 500 cycles, which is significantly higher than that of the vacuum-filtered MXene film. This work demonstrates a straightforward room-temperature gelation method for constructing 3D MXene-based hydrogels to avoid the oxidation of MXenes, and casts new insight on the mechanism of the graphene oxide (GO)-assisted gelation.
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高影响因子
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