RSC Advances
·
2017
·Vol. 7
·期 5
·2415-2425
·
IF 3.108
Ying Yang,Lin Zhu,Feng Xia,Baoyou Gong,Anjian Xie,Shikuo Li,Fangzhi Huang,Shaohua Wang,Yuhua Shen,David T. Weaver
In this study, a novel drug-loaded inorganic nanoparticle–biomolecule hybrid hydrogel shell containing fluorouracil (5-FU)/reduced graphene oxide (rGO)/Brassica chinensis extract (Bce) on tumor cells was firstly constructed through a facile one-step method. The Bce stems from a natural green vegetable for improving the bio-compatibility of 5-FU/rGO/Bce hydrogel and presents multi-functions in this system. As both a reducing and a cross-linking agent for GO, Bce is beneficial for the fast formation of a rGO/Bce hybrid hydrogel at body temperature (37 °C) before laser irradiation, as well as being an excellent photo-sensitizer for inducing the generation of cytotoxic singlet oxygen (1O2) to kill tumor cells by means of laser radiation. The rGO in the hybrid hydrogel possesses photothermal characteristic for the hyperthermia antitumor. After loading anticancer drugs, the formed 5-FU/rGO/Bce hybrid hydrogel shells encapsulated on the tumor cells in situ exhibit three competitive advantages, i.e., retaining the high concentration of drugs around tumor cells to enhance the localized antitumor effect, reducing the side effects by hindering drugs from migrating to normal tissue, and displaying effectively synergetic chemo/photo-thermal/photodynamic therapies. This study provides a new strategy to exploit the multi-functions of hybrid hydrogel materials for effective biomedical applications.
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2019
·
IF 0
Sumin Wang,Jingwen Shen,Qiguan Wang,Yaru Fan,Lu Li,Kai Zhang,Lei Yang,Wenzhi Zhang,Xinhai Wang
We constructed a flexible solid-state supercapacitor based on carbon fiber cloth on which a graphene quantum dot-reduced graphene oxide solution and an aqueous polyaniline solution are alternatively sprayed. An acidic gel is used as both the electrolyte and the binder, by which two plates of electrodes are glued together, forming a symmetrical capacitor. The graphene quantum dot-reduced graphene oxide modifies the hydrophobic nature of carbon fiber cloth, which enhances the interactions between carbon fiber cloth and polyaniline. Additionally, under the strong electrostatic forces between the electropositive polyaniline and the electronegative graphene quantum dot-reduced graphene oxide, a self-assembled three-dimensional fiber-like network on carbon fiber cloth is observed. The fabricated solid-state supercapacitor shows a maximum capacitance of 82.9 mF cm–2 (1036 F g–1) at a 0.1 mA cm–2 current density referenced to the active materials on the electrodes, with a high stability of 97.7% retention after 10000 charge and discharge cycles, because of the strong interaction between polyaniline and the modified carbon fiber cloth. Moreover, the capacitance is unchanged upon bending. This facile layer-by-layer self-assembly spraying technique shows great advantages of easy operation, good controllability, and versatility and can be used universally for the fabrication of foldable and wearable photoelectric devices.
✓ 已验证
DOI
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 9
·4807-4815
·
IF 11.301
Ying Gu,Aiping Wu,Lei Wang,Dongxu Wang,Haijing Yan,Peng Yu,Ying Xie,Chungui Tian,Fanfei Sun,Honggang Fu
Single-atom catalysts (SACs) have been promising in various catalytic fields, but the controllable synthesis of SACs with high stability remains challenging. Here, we show a robust strategy toward the fabrication of highly efficient and stable SACs based on the “competitive occupancy” of two metal (M) species on graphene oxide (GO). The abundant M1 (Ti) species predominantly occupy more groups of GO, thereby leaving a tiny number of groups in the gaps of the M1 species to combine with M2 (Co2+, etc.) species. Consequently, this guarantees the formation of Co–N4 SACs embedded in 2D TiN/rGO sheets during nitridation. Further, TiN can act as a “spacer” to prevent Co–N4 from aggregation, thereby improving catalyst stability. Co–N4/TiN–rGO exhibits outstanding catalytic performance for the fast conversion of highly concentrated aromatic nitro compounds (∼0.3–2 mM) into amino compounds and excellent recyclability, which is the best among reported catalysts. In contrast, TiN/rGO has no obvious activity, and Co4N–rGO prepared without Ti competition shows poor activity and stability, which indicates the vital role of Co–N4 and TiN for obtaining the remarkable catalytic ability of Co–N4/TiN–rGO. The reaction mechanism is also proposed based on theoretical calculations. The strategy can be used to design Ni (Fe, Cr, Cu)-based SACs.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 18
·14463-14476
·
IF 4.6
Huu Phuc Dang,Le Tran,Le Huu Bao,Hanh Ngoc Thi Le
Developing cost-effective high-performance counter electrodes (CEs) is critical for improving the efficiency of quantum dot-sensitized solar cells (QDSSCs). In this study, a CNT@rGO@Cu2S composite CE was synthesized using a hydrothermal method, incorporating carbon nanotubes (CNTs), reduced graphene oxide (rGO), and Cu2S nanoparticles to enhance the charge transfer and catalytic activity. Structural characterization (XRD, Raman, FESEM, and HRTEM) confirmed the successful integration of the Cu2S nanoflowers within the rGO matrix. CNTs formed a conductive network that prevented rGO restacking and facilitated electron transport. Electrochemical analysis (CV, EIS, and Tafel polarization) demonstrated the superior electrocatalytic activity of the 6% CNT@rGO@Cu2S composite, exhibiting the highest exchange current density (J0) and lowest charge transfer resistance (Rct1), indicating efficient polysulfide redox reactions. When employed in QDSSCs with a CdS/CdSe co-sensitized photoanode, the 6% CNT@rGO@Cu2S CE achieved a power conversion efficiency (PCE) of 5.965%, surpassing those of rGO@Cu2S (5.322%) and conventional Pt-based CEs (1.96%). The superior performance is attributed to the optimized Fermi level alignment with the redox couple, enhanced charge mobility due to the CNTs, and improved electrolyte penetration.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE IONICS
·
2020
·
IF 3.107
Jian Liu,Ying-Ge Xu,Ling-Bin Kong
Sodium-ion batteries (SIBs) and Sodium-ion capacitors (SICs) have great promise for large-scale energy storage. However, the mismatch of electrode kinetics and charge-storage capacity between anode and cathode materials remains a challenge. Here three-dimensional self-assembled MoS 2 /SnS 2 -reduced graphene oxide (MoS 2 /SnS 2 -RGO) anode material with fast Na-ion diffusion rate and pseudocapacitive charge storage has been successfully prepared via a facile hydrothermal method . With this particular structure, the Na-ion diffusion coefficient of MoS 2 /SnS 2 -RGO calculated by GITT achieves 5.53 × 10 −7 cm 2 s −1 during the desodiation process, which effectively improves the reaction kinetics for anode material. When tested against metal sodium in the potential window of 0.01–3.00 V, the optimized MoS 2 /SnS 2 -RGO delivers an excellent reversible capacity of 818.9 mA h g −1 at a specific current of 100 mA g −1 after 100 cycles and a superior rate capability of 555.4 mA h g −1 at 2000 mA g −1 over 500 cycles. So far, MoS 2 /SnS 2 -RGO possesses the highest reversible capacity among the reported anode materials . Furthermore, a SIC composed of optimized MoS 2 /SnS 2 -RGO anode and a CC cathode reaches a high specific energy of 113.9 W h kg −1 at specific power of 561.25 W kg −1 . Similarly, a SIB consisted of the MoS 2 /SnS 2 -RGO anode and a Na 3 V 2 (PO 4 ) 3 /C cathode displays the reversible discharge capacity of 56 mA h g −1 at the high rates of 2 C.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Wenyan Huang,Yinong Zheng,Qianwen Tao,Yeqi Zhu,Siqi Lan,Ying Yu,Shengjian Mao,Zhichao Xue,Rongqian Yao
High flight speed of hypersonic vehicles will push thermal insulation composites to achieve balanced enhancement of high porosity with increasing load-bearing capability. Herein, hierarchically porous SiC(rGO) polymer-derived ceramics (PDCs) with lightweight, heat-insulating, anti-ablative and tough engineered merits, are designed from polycarbosilane-vinyltriethoxysilane-graphene oxide precursors by re-pyrolysis/graphite-assisted decarburization . Graphite pore-forming agents tightly coupled with SiO x C y /C free (rGO) by C-dangling bonds, can inhibit SiO x C y decomposition, increase ceramic network disorder and expedite concurrent removal of C free . SiO 2 generated from Si-dangling oxidation bonding, efficiently densifies framework to retain mechanical performances, and meanwhile creates more interfaces to enhance phonon scattering. Such structure similar to nodular cast iron confers low thermal conductivity (0.11 W·m -1 ·K -1 ), particularly, fully preserves good compressive strength (5.4 MPa) for SiC(rGO) 40% . Under both cyclic butane flame ablation (∼1300 °C) and long-term oxidation for 7200 s, self-healing effect of SiO 2 imbues products with good structural integrity, shedding light on the opportunity to apply any thermal protection system.
✓ 已验证
DOI
高影响因子
Small Methods
·
2025
·
IF 9.1
Yueyan Wang,Yuhan Ma,Yongqi Zhang,Ruilin Liu,Luzhen Li,Naiwen Zhang,Peijie Wang,Lisheng Zhang
Methylammonium lead iodide (MAPbI 3 ) has been considered as the most influential component to boost the rapid development of perovskite photovoltaic devices during the past decade. However, the volatility of organic compounds (Methylammonium ions) causes excessive residual PbI 2 during the fabrication and storage process of MAPbI 3 films. The doping of various reduced graphene oxide (L-AA-rGO) is systematically induced into MAPbI 3 precursor ink to regulate the crystallization process, resulting in obtaining a high-quality perovskite film. The higher content of oxygen-containing functional groups (carboxyl and hydroxyl) and flexible sp 3 skeleton structure is successfully obtained in L-AA-rGO(LT), which is favored to form stable coordination bonds with uncoordinated Pb 2+ ions via lone pairs of electrons. Therefore, this functional L-AA-rGO(LT) not only passivates deep-level defects Pb 0 with its functional groups, but also absorbs the perovskite lattice structure with its special sp 3 carbon network to release its residual stress within the perovskite film. This work provides a new method to develop the efficiency and stability of MAPbI 3 perovskite solar cells via doping functional L-AA-rGO.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
·
2026
·
IF 4.9
Zijie Pi,Yuanyuan Zhang,Rongqin Yang,Lin Liu,Yu Huang,Yingchi Wu,Tao Gou,Honghao Kang,Tao Zhang,Xiaoling Yang,Xiaoling Liao
A high-performance nanozyme electrochemical sensor was engineered for the sensitive detection of hydrogen peroxide (H 2 O 2 ). The sensor is based on a synergistic ternary nanocomposite of ZIF-8, reduced graphene oxide (RGO), and platinum nanoparticles (Pt NPs). In this design, the Pt NPs serve as the catalytic centers with intrinsic peroxidase-like activity, effectively mimicking natural enzymes to catalyze the electrochemical reduction of H 2 O 2 . This nanocomposite was immobilized on a glassy carbon electrode (GCE) via a combined drop-casting and electrodeposition strategy. Morphological and structural analyses using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) confirmed the successful fabrication of a uniform nanocomposite architecture. Systematic optimization revealed that the sensor exhibited excellent detection performance for H 2 O 2 , with a sensitivity of 22.3 μA mM −1 cm −2 ( n = 4), a detection limit as low as 59 nM (S/N = 3), a limit of quantification of 0.197 μM, and a linear range of 62 nM–13.07 mM, exhibiting good selectivity and reproducibility. Importantly, the sensor was successfully applied for the real-time, in-situ monitoring of H 2 O 2 released from zebrafish embryos under cadmium ion (Cd 2+ ) induced oxidative stress. This work offers a promising tool for the early assessment of heavy metal-induced oxidative damage.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Liu Tong,Zhang Jie,An Qianqian,Wu Yusheng,Li Laishi,Fang Tiehui,You Junhua
Electrocatalytic water splitting is a clean and sustainable method for hydrogen production. Cobalt diselenide (CoSe 2 ) is an electrocatalyst with great application prospects. However, due to the inherent low electrical conductivity and aggregation tendency of transition metal selenides, their practical applications are limited. In this study, under the constraint of three-dimensional porous nitrogen-doped reduced graphene oxide/nickel foam (N-rGO/NF) substrates, small-sized nitrogen-doped cobalt diselenide (CoSe 2-x N x ) nanoneedles were prepared by a one-step hydrothermal method, and excellent electrocatalysts were obtained. The optimized catalyst (N-rGO/CoSe 2-x N x /NF-100) exhibits excellent OER performance in an alkaline environment at current densities of 10, 50 and 100 mA cm −2 . N-rGO/NF not only provides good electrical conductivity for the electrocatalyst, but also limits the size of CoSe 2 . The three-dimensional porous structure constructed by small-sized CoSe 2 nanoneedles increases the specific surface area of the electrocatalyst, which is conducive to the OER process. The doping of nitrogen in CoSe 2 forms Co-Nx electron transfer channels, accelerating charge transfer. Density functional theory (DFT) calculations have confirmed that structural modification methods such as limiting the size of the electrocatalyst to avoid agglomeration, as well as electronic control methods such as nitrogen doping, can accelerate the surface structure reconstruction process of the catalyst, thereby improving the adsorption energy of the electrocatalyst for OER intermediates and reducing the overpotential.
✓ 已验证
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Yuanyuan Chen,Peng Zhao,Yi Liang,Yi Ma,Yiyi Liu,Jinsong Zhao,Jingzhou Hou,Changjun Hou,Danqun Huo
Herein, we developed a unique screen-printed carbon electrode (SPCE) with three-dimensional melamine-doped graphene oxide/MXene composite aerogel (3D MGMA) modification, which is used for the simultaneous and sensitive detection of three metal ions (Zn 2+ , Cd 2+ , and Pb 2+ ) in the environment. A self-assembly method was used to fabricate 3D MXene aerogels based on MXene, graphene oxide (GO), and melamine . Notably, the network-like 3D structure combining 2D MXene and rGO sheets can provide a high ratio of surface area and enriched functional clusters, which are beneficial for improving the electrical conductivity and promoting the uptake of heavy metal ions. In the linear range of 3–900 μg L -1 , the constructed innovative sensing platform can sensitively detect Zn 2+ , Cd 2+ , and Pb 2+ simultaneously, with detection limits of 0.48 μg L -1 ,0.45 μg L -1 and 0.29 μg L -1 respectively. This work reflects precision and reliability in the detection of three water samples (tap water, Minzhu lake and Yangtze River) and four cereal samples (sorghum, rice, wheat and corn), proposing a novel strategy for monitoring heavy metal ions in the natural environment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 27
·2703-2713
·
IF 3.532
Min Wang,Mingzhe Jiang,Xiaochen Liao,Xiao Wang,Wenjing Lai,Pengli Li,Jiajia Li,Chenglin Hong,Yu Qi
The effective amplification of the signal is the prerequisite for the ultrasensitive detection of electrochemical immunosensors. To quantitatively detect alpha-fetoprotein (AFP), we prepared a sandwich-type electrochemical immunosensor. Using a gold nanoparticles (Au NPs) modified glassy carbon electrode (GCE) as the sensing platform and Cu/Cu2O-rGO@Au as the signal label, differential pulse voltammetry (DPV) was used to achieve sensitive detection of AFP. We found that the nanomaterials can undergo electro-oxidation and electro-reduction reactions between Cu(I) and Cu(II) in a buffer solution of pH = 6.0. It is worth mentioning that the incorporation of metals into metal oxide substrates is a new strategy to combine the catalytic activity of metal oxides with the electrical conductivity of metals. Reduced graphene oxide (rGO), which is rich in oxygen-containing groups, can load more Cu/Cu2O and Au NPs and increase the conductivity. The modification of Au NPs makes them have better biocompatibility and conductivity. Under the best detection conditions, the prepared immunosensor realizes the specific and ultrasensitive detection of AFP. The detection range is 0.01–50 ng mL−1 and the limit of detection (LOD) was as low as 0.589 pg mL−1 (S/N = 3); meanwhile it also has good practical application ability. Therefore, this immunosensor provides an important means for the early screening and detection of AFP.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2022
·
IF 6.137
Yucheng Liu,Zhi Huang,Wei He,Mingyan Chen,Wenwen Tu,Meng Zhu,Dong Gan,Shumeng Liu
ABSTRACT In this work, bimetallic MIL53(Fe-Co) nanorod was modified by SiO 2 -COOH nanoparticles to obtain a novel MOF with low aggregation, and then intercalated into the reduced graphene oxide (RGO) layer crosslinked by polydopamine (PDA) to form a super-hydrophilic membrane with selective adsorption. The composite material was characterized by various analytical techniques. Owing to the low agglomeration of bimetallic MIL53(Fe-Co) and improved layer spacing of RGO , the stable composite membrane exhibited a water contact angle of approximate 0°, with the dye solution flux of 1721.46 L·m −2 ·h −1 ·bar −1 for methylene blue (MB) and 1834.88 L·m −2 ·h −1 ·bar −1 for malachite green (MG), the dye solution flux was increased by 31 and 33 times compared with M0, respectively. Meanwhile, the rejection rates of MB and MG were 99.46% and 99.4% with an excellent tolerance to a wide range of pH. Furthermore, the composite membrane shows a huge adsorption capacity in treating dye solution with high concentration and large volume for reusability due to the improvement of hydrophilicity. It also performed excellently in the field of separating oil/water emulsion with the flux of 539.79 L·m −2 ·h −1 ·bar −1 and rejection of 98.12%. In conclusion, the composite membrane with extraordinary hydrophilicity, strong adsorption capacity, and superior anti-fouling performance with low costs endows possibility of massive manufacture in commercial production for wastewater separation and purifications.
✓ 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）