COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Wenwen Liu,Zhibin Mao,Qiancun Zhu,Peikai Luo,Jie Chen,Zongyi Ye,Yu Cao
Utilizing selective laser texturing technology, calcium titanate integrated with reduced graphene oxide (CTO/rGO) films is prepared with patterned surface which was endowed for the first time with dual functions of hydrophilicity and anti-reflection, aiming to improve the reusability of photocatalyst and to enhance the practicability of photocatalytic degradation technology. The patterned film was verified to possess excellent photocatalytic activity and recyclability, the pseudo-first-order rate constant k of which was improved up to 45 % compared with the primitive film and even much better than of the CTO/rGO photocatalyst powder. In addition, the degradation rate of the used film can be significantly recovered to 89.06 % after combined treatment with ultrasound and UV, maintaining its long-term stable degradation ability. On the one hand, the improved hydrophilicity was beneficial to increase the contact area between the contaminants and the photocatalytic film surface, which will provide more reaction sites and make it much easier to remove the residual dye absorbed on the surface; on the other hand, the enhance of anti-reflection performance will improve the utilization rate of the incident light, thus increasing the photocatalytic activity of the patterned film. This study provides new ideas and methods for the preparation of efficient and stable photocatalytic film.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 24
·1-14
·
IF 2.8
Ni Xiaoqi,Fu Wenwen,Wang Hui-Ya,Xu Xiangyang,Zhu Yaofeng
The growing demand for intelligent wearable devices has put forward new challenges for flexible and high-performance microwave-absorbing materials. Traditional powder-based electromagnetic wave absorbing materials are restricted by their rigidity and bulkiness, making them unsuitable for intelligent, flexible wearable devices. Herein, flexible ZnO/rGO@PET composite fabrics were successfully fabricated by choosing polyester knitted fabric as an elastic scaffold and then adhering ZnO/rGO through impregnation and hydrothermal treatment process. The morphology of ZnO presents needle, flake, and coralline-clustered structures, which are regulated by controlling the growth rate of ZnO seeds along the c-axis in a strong polar ion environment. Among them, the flake-like ZnO synthesized in a 0.050 mol/L growth solution exhibits a looser porous structure, which would significantly enhance impedance matching and multiple internal reflections. Furthermore, flake-like ZnO has a higher electric dipole moment, which can provide stronger dipole polarization and interface polarization. Notably, the ZnO/rGO@PET composite fabric with flake-like ZnO achieves the optimal minimum reflection loss ( RL min ) of -70.76 dB and an effective absorption bandwidth (EAB) of 4.20 GHz (8.2–12.4 GHz). Furthermore, adjusting the stacking sequence of functional fabric layers could effectively control the electromagnetic parameters and corresponding microwave absorption performance, which is well maintained after repeated washings. This work provides a novel strategy for designing next-generation tunable electromagnetic textiles.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xing Kang,Qinghua Liu,Zhihao Lu,Haonan Chen,Yingying Cai,Kun Gao,Yaning Liu,Gang Lu
Electrocatalytic hydrogen evolution reaction (HER) is a promising way to produce clean hydrogen energy. Although a variety of strategies have been developed to improve the performance of HER, it is still necessary to further develop cost-effective and efficient method for further improvement of HER performance. In this work, we proposed a novel method to further improve the HER performance of platinum (Pt) by adsorbing carefully chosen molecules on the composite of Pt and reduced graphene oxide (rGO). Typically, the molecules of methyl blue (MB) were selectively adsorbed on the surface of rGO sheets. The adsorption of MB molecules could promote interfacial charge transfer, leading to an improvement in electrocatalytic HER. After the adsorption of MB, the output current density at −0.6 V vs. RHE increased for 1.5 folds to −195 mA·cm −2 , and the overpotential at 10 mA·cm −2 decreased from −0.109 to −0.084 V vs. RHE. The improved charge transfer at interface was verified with many electrochemical measurements and theoretical calculations. Overall, this work proposes a simple and effective method to improve the electrocatalytic performance of HER, and this method could be easily and conveniently applied to many other catalytic systems.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shimeng Guo,Shaopei Yang,Zipeng Wang,Runhai Wu,Yongqi Mi,Jiajun He,Baoyan Wang,Kefeng Xie,Pengcheng Du
Quinone-based polymers, characterized by reversible electron transfer enabled by a polyketone structure, have emerged as promising candidates for high-performance supercapacitors (SCs) electrodes due to their inherent pseudo-capacitive behavior. However, their practical application is often constrained by poor conductivity and stability. Herein, we introduce an innovative approach by integrating a quinone-amine polymer (PNAD-Bq), synthesized from 1,5-naphthalenediamine and 1,4-benzoquinone, with reduced graphene oxide (rGO) through one-step hydrothermal method. The π-π conjugation between PNAD-Bq and rGO effectively prevents graphene sheets aggregation, enhancing pseudo-capacitance, electron transport, and ion migration. The optimized PNAD-Bq/rGO exhibits outstanding electrochemical performance, achieving a high specific capacitance of 625.36 F/g at 1 A/g, an exceptional rate capability of 63.85 % even up to extremely high current density of 375 A/g, and remarkable cycling stability, retaining 71.56 % of its initial specific capacitance after 50,000 cycles at 100 mV/s. When employed in symmetric SCs, the PNAD-Bq/rGO delivers a specific capacitance of 534.67 F/g at 0.1 A/g and maintains remarkable cycle stability of 73.1 % after 50,000 cycles at 1 A/g. This work highlights the potential of quinone-based polymers composite electrode material as a high-performance electrode material, providing a promising pathway for the construction of high-performance electrode materials.
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ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Guiyin Li,Min Chen,Bo Wang,Chaoxian Wang,Guanxiong Wu,Jintao Liang,Zhide Zhou
Golgi protein 73 (GP73) is a new type of marker that can specifically detect hepatocellular carcinoma (HCC). Herein, a dual-signal sandwich-type electrochemical aptasensor for GP73 determination was constructed on the basis of hemin-reduced graphene oxide-manganese oxide (H-rGO-Mn 3 O 4 ) nanozymes. [email protected] ( o -phenylenediamine) ( [email protected] ) nanohybrids with a large specific surface area and conductance were co-electro-deposited onto a screen-printed electrode (SPE) surface to immobilize GP73 capture aptamer 2 (Apt2). H-rGO-Mn 3 O 4 nanozymes were used not only to immobilize amino functionalised GP73 aptamer 1 (Apt1) as the detection probe, but also to serve as an in-situ redox signal indicator because of the redox reaction of Hemin (Fe(Ш)/Hemin(Fe(II)). In addition, given their excellent peroxidase-like activity, H-rGO-Mn 3 O 4 nanozymes can catalyse the decomposition of H 2 O 2 and oxidation of substrate (3,3′,5,5′-tetramethylbenzidine, TMB) to oxTMB, which is used as another redox signal. In the presence of the target GP73, the two aptamers specifically bind to the target, thereby affecting two electrochemical signals. Under optimal conditions, the dual-signal sandwich-type electrochemical aptasensor had a salient analytical performance. The two electrochemical redox signals linearly increase with the logarithm of the GP73 concentration in the range of 0.01–100.0 ng/mL with the limit of detection (LOD) of 0.0071 ng/mL and sensitivity of 2.441 μA/μM/cm 2 . Moreover, the recovery of human serum samples ranged from 98.66% to 121.11%. Furthermore, the two redox signals can simultaneously corroborate each other, thereby preventing missed diagnosis and misdiagnosis. All the results can provide new insights into the clinically effective determination of HCC.
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Biomaterials Science
·
2017
·Vol. 5
·期 5
·990-1000
·
IF 4.21
Ying Yang,Yunlong Wang,Manzhou Zhu,Yan Chen,Yazhong Xiao,Yuhua Shen,Anjian Xie
A reduced graphene oxide (RGO)/gold nanorod (AuNR)/hydroxyapatite (HA) nanocomposite was designed and successfully synthesized for the first time. An anticancer drug, 5-fluorouracil (5FU), was chosen as a model drug to be loaded in RGO/AuNR/HA. The fabricated RGO/AuNR/HA-5FU showed robust, selective targeting and penetrating efficiency against HeLa cells due to the good compatibility and nontoxicity of HA, and showed excellent synergetic antitumor effects through combined chemotherapy (CT) by 5FU and photothermal therapy (PTT) by both RGO and AuNRs under near-infrared (NIR) laser irradiation. More importantly, this synergistic dual therapy based on RGO/AuNR/HA can also minimize side effects in normal cells and exhibits greater antitumor activity because of a multi-stage drug release ability triggered by the pH sensitivity of HA in the first stage and the combined photothermal conversion capabilities of RGO and AuNRs by means of the NIR laser irradiation in the second stage. This study suggests that the novel RGO/AuNR/HA multi-stage drug delivery system may represent a promising potential application of multifunctional composite materials in the biomedical field.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bowen Zhang,Lulu Guo,Jiayue Xin,Guangrui Xiang,Shengxuan Xu,Yu Gong,Xiaohan Sun,LeTian Zhao,Ke Wu,Fan Li,Zhimin Yang
The development of self-powered humidity sensors featuring rapid response, low hysteresis, and dual-mode signal output is highly anticipated in healthcare monitoring, wearable electronics and human-machine interaction. Here, we present a hydrogen bonding-mediated self-assembly strategy to synthesize α-Fe 2 O 3 -decorated reduced graphene oxide (Fe 2 O 3 -rGO) hybrids for high-performance dual-mode humidity sensing. In impedance mode, the sensor demonstrates a broad detection range (11–98 % RH), a response value of 71.1 at 98 % RH, fast response/recovery times (1 s/5 s), and minimal hysteresis (3.7 %). The sensing mechanism, elucidated through complex impedance spectroscopy and water adsorption isotherms, reveals synergistic proton transport and p-n heterojunction effects at the α-Fe 2 O 3 -rGO interface. Notably, the sensor also operates in a self-powered mode, generating an ultrahigh output voltage (1.1 V at 98 % RH) through humidity-triggered galvanic reactions, enabling capacitor charging and light-emitting diode (LED) driving. Practical applicability is demonstrated through real-time respiratory monitoring, Morse code communication, and non-contact finger motion tracking, underscoring its utility in wearable electronics. This work provides a scalable and cost-effective approach to designing multifunctional humidity sensors with broad applicability in smart systems and healthcare.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Xincheng Wang,Yingxin Yuan,Jinhao Xu,Zhen Li,Tianyi Xu,Penglin Lu,Shanshan Guan
Multifunctional flexible sensing technology has emerged as a pivotal research hotspot. However, most existing flexible sensors are constrained by single-functionality limitations and thus fail to meet the increasingly urgent demand for integrated multiparameter sensing in complex real-world scenarios. In this study, we propose a multifunctional flexible sensor based on an rGO@MXene/PDMS nanocomposite, which integrates three functionalities: high gauge factor (GF) strain sensing, precise resistive temperature sensing, and efficient photothermal conversion. These capabilities enable reliable monitoring of physiological signals, health monitoring, and localized thermal therapy. The as-fabricated flexible strain sensor exhibits exceptional performance, exhibiting a low detection limit of 0.5%, high gauge factor (GF) of 1000, broad dynamic range of 0%–400%, and excellent cycling stability over 20,000 cycles. Notably, the sensor achieves a temperature coefficient of resistance (TCR) of −1.01% °C–1, enabling sustained real-time physiological temperature monitoring for up to 1800 min. Furthermore, the sensor exhibits efficient photothermal conversion capability, achieving a rapid temperature rise (ΔT > 40 °C under 1 kW m–2) and stable heat retention, making it highly promising for localized thermal therapy. This work provides great potential to advance the development of next-generation wearable devices, smart healthcare systems, and human–machine interaction technologies.
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SENSORS
·
2025
·Vol. 25
·期 24
·7462
·
IF 3.5
Yuanyue Lu,Yong Mei,Yingying Gu,Ye Tao,Yuhan Yang,Jiao Yu,Yang Zhang,Lin Liu,Xin Li
An electrochemical immunosensor was fabricated to identify CA15-3, a biomarker for breast cancer (BC). A composite sensor substrate made of “zeolitic imidazolate framework-8” (ZIF-8) and “reduced graphene oxide” (rGO) was chosen and its conductivity was further improved by the addition of chitosan (CS)-doped gold nanoparticles (AuNPs). The CS@AuNPs are able to conjugate with antibodies via the strong Au-S interaction, which offers multiple active sites for antibody immobilization and enhances the sensor performance. This immunosensor is capable of ultrasensitive detection of CA15-3 by specific antigen–antibody –interactions. In healthy people, normal serum CA15-3 is up to 25 U/mL. Under optimized experimental conditions, the alteration in the signal intensity measured by the sensor was related to the CA15-3 activity. The quantitative relationship was linear over 0.001–400 U/mL with a limit of detection (LOD) of 0.0031 U/mL at a “signal-to-noise ratio” (S/N) of 3 and a “correlation coefficient” (r2) of 0.9983. The developed immunosensor showed great accuracy, stability, and selectivity, and was able to detect CA15-3 in human serum samples. These results validate its potential as a reliable analytical platform for BC diagnosis and early clinical screening.
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CARBON
·
2024
·
IF 10.5
Xingmin Liu,Boxiong Zheng,Yutuo Hua,Shaowei Lu,Zhisheng Nong,Jijie Wang,Yutong Song
Highly conductive MXene has attracted extensive focus owing to its notable ability for electromagnetic wave dissipation, but it also suffers from impedance mismatch. Herein, flexibly MXene/rGO aerogel frames (MGs) were construct by direct ink writing (DIW) of low concentration emulsion inks. Adjustment of compositional ratio and structural design could effectively regulate their EWA performances. The results indicate that the printed aerogel frame has an effective absorption bandwidth (EAB) of 8.10 GHz (covering the majority of X-band and entire Ku-band) and a minimum reflection loss (RL min ) of −56.85 dB. In addition, the printed ultralight aerogel frames integrate good mechanical performance and thermal insulation capability. The DIW technique for ultralight MXene-based absorber reveals beneficial inspiration and enlightenment for the structural design and potential application of EMA composites.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 5
·1-19
·
IF 2.8
He Jiahao,Zhang Guoxin,Xiao Yiyao,Wang Chao,Song Ningning
An effective strategy for improving microwave absorbing performance was proposed in atomically dispersed bimetallic carbon-based composite materials. The atomically dispersed ZnCo-NC@rGO composites were synthesized though metal-mediated formamide (FA) condensation and carbonization. By adjusting the Co/Zn sites loading, the electromagnetic parameters and absorption performance could be effectively optimized. With the Co/Zn ratio of around 0.01, the minimum reflection loss (RL min ) reached − 26.63 dB at absorbing thickness of 1.50 mm, and the maximum effective absorption bandwidth (EAB, RL < − 10 dB) was up to 4.52 GHz (12.78–17.30 GHz) at absorbing thickness of 1.60 mm, covering almost the Ku band. A stronger RL min of − 59.63 dB was obtained with a thickness of 4.70 mm. Different loading of atomically dispersed metal sites induces variations in metal center and ligand structure. This endows ZnCo-NC@rGO excellent impedance matching and synergistic electromagnetic loss effects. In addition, the maximum radar cross section (RCS) reduction value was up to 26.94 dB m 2 at a scattering angle of 0°. This study points out a feasible path for the fabrication of carbon-based ultralight synergistic absorbers.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Min Zhang,Dongmei Fu
A gas-liquid interface approach was developed for the synthesis of ternary Pd-Au-P composites, which were supported on poly(diallyldimethylammonium chloride)-functionalized reduced graphene oxide (PDDA/RGO). The as-synthesized composites were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The Pd-Au-P-PDDA/RGO composites as an electrochemical dopamine (DA) sensor showed superior electrocatalytic activity and stability toward DA oxidation as compared with Pd- Au-PDDA/RGO and Pd-Au-P/RGO. The enhanced electrochemical performance could be attributed to the effect of electronic structure and long-range disorder and short-range structure due to the doping of P element. By studying the kinetics of DA oxidation, electrochemical DA oxidation was proven to be irreversible and follow Laviron Equation. Using differential pulse voltammetry (DPV), the Pd-Au- P/PDDA/RGO sensor had low detection limit of 0.7 ^M, wide linear range of 3.5-125 ^M and relatively high sensitivity (0.2858 μA/μM), which was suitable for the detection of biological and environmental samples.
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