MATERIALS RESEARCH BULLETIN
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2025
·
IF 5.7
Qing Xu,Siqi Huang,Yuguang Lv,Libo Du
As energy demand rises and environmental issues become more severe, various industries urgently need sustainable materials, and bifunctional catalysts are receiving increased attention. This paper employs a simple phosphating method to prepare Ni 2 P-supported reduced graphene oxide porous materials (Ni 2 P/rGO) as a bifunctional catalyst for photocatalytic degradation of pollutants and electrocatalytic hydrogen evolution reaction (HER). The introduction of polystyrene microspheres (PS) significantly improved the surface morphology of rGO, endowing Ni 2 P/rGO with excellent photocatalytic and electrocatalytic properties. The Ni 2 P/rGO composites material exhibits good degradation capabilities for diverse dyes and tetracycline hydrochloride (TC), with the best removal effects observed for methylene blue and tetracycline wastewater. Under visible light, the degradation efficiencies of methylene blue (MB) and TC pollutants within 100 min were 91 % and 83 %, respectively. Furthermore, with a low overpotential of 21.4 mV, a Tafel slope of 46.57 mV·dec −1 , and stability for 28 h, the Ni 2 P/rGO composite material demonstrates outstanding electrocatalytic hydrogen evolution performance in an alkaline environment. The above achievements mean that the current work has explored new trains of thought for the research and development of bifunctional catalysts.
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Biosensors-Basel
·
2024
·Vol. 14
·期 1
·38
·
IF 4.9
Qiaolin Fan,Xiao Li,Hui Dong,Zhonghua Ni,Tao Hu
Graphene and graphene-like two-dimensional layered nanomaterials-based photoelectrochemical (PEC) biosensors have recently grown rapidly in popularity thanks to their advantages of high sensitivity and low background signal, which have attracted tremendous attention in ultrahigh sensitive small molecule detection. This work proposes a non-enzymatic and visible-light-sensitive PEC biosensing platform based on ZIF-67@MoS2/rGO composite which is synthesized through a facile and one-step microwave-assisted hydrothermal method. The combination of MoS2and rGO could construct van der Waals heterostructures, which not only act as visible-light-active nanomaterials, but facilitate charge carriers transfer between the photoelectrode and glassy carbon electrode (GCE). ZIF-67 anchored on MoS2/rGO heterostructures provides large specific surface areas and a high proportion of catalytic sites, which cooperate with MoS2nanosheets, realizing rapid and efficient enzyme-free electrocatalytic oxidation of glucose. The ZIF-67@MoS2/rGO-modified GCE can realize the rapid and sensitive detection of glucose at low detection voltage, which exhibits a high sensitivity of 12.62 μAmM−1cm−2. Finally, the ZIF-67@MoS2/rGO PEC biosensor is developed by integrating the ZIF-67@MoS2/rGO with a screen-printed electrode (SPE), which exhibits a high sensitivity of 3.479 μAmM−1cm−2and a low detection limit of 1.39 μM. The biosensor’s selectivity, stability, and repeatability are systematically investigated, and its practicability is evaluated by detecting clinical serum samples.Keywords:ZIF-67;2D material;non-enzymatic;heterostructure;visible-light sensitive;photoelectrochemical biosensing
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高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 4
·1291-1299
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IF 2.2
Li Zhilei,Zhou Jianping,Xu Yan,Shang Yukui,Chen Changhua,Ran Tongtong
Effective farmland management requires real-time monitoring of plant growth status and timely response to stressors. To achieve this goal, we utilized wire organic electrochemical transistors (WECTs) to convert ion signals in plant vasculature into electrical signals in circuits, enabling the detection of ion concentrations. In our study, we employed a flexible substrate composed of a core-sheath structure nanofiber yarn impregnated with poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) as a semiconductor channel. The gate was made of silver wire, while silver paste was sprayed at both ends of the core-sheath yarn to serve as a source and drain. This configuration allowed us to construct a wire organic electrochemical transistor that exhibited modulation performance and sensitivity at low voltages, with a transconductance of 1.07 × 10 –4 S. We conducted sodium ion concentration testing and successfully achieved the sensing of sodium ions at concentrations ranging from 10 –4 to 10 –1 M. This study lays the groundwork for the future development of organic electrochemical transistors in plants, enabling in situ detection of sodium ion concentrations under salt stress.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Houlin Cheng,Jingxuan Li,Pengcheng Wang,Youzu Xu,Zhiyang Zhang,Qian Feng,Hurong Yao,Zhigao Huang,Jiaxin Li
This work utilized Y 2 O 3 and rGO as additives, and systematically regulated their spatial distribution and composite ratio with Na 3 V 2 (PO 4 ) 3 (NVP) to overcome the bottlenecks faced by NVP, such as intrinsically low electronic conductivity, severe interfacial side reactions, and structural instability during cycling. The modified NVP cathode can significantly enhance its electrochemical performance, and improve its sodium storage and thermal safety performance in the pouch-type full cell. The as-prepared NVP@Y 2 O 3 @rGO material achieves an 84 % capacity retention rate after 1000 cycles at 1C&27 °C, while still delivering a specific capacity of 49.6 mAh g −1 at an ultra-high rate of 30C. Under elevated temperature of 45 °C, it maintains 91.5 % capacity retention after 400 cycles at 1C. In contrast, the pristine NVP retains only 38.2 %. Moreover, it exhibits a reversible capacity of 63.6 mAh g −1 even at an ultra-high rate of 40C. More importantly, pouch-type full cell testing further confirms its superior cycling stability (60.8 % capacity retention after 100 cycles, representing a 30.5 % improvement over the unmodified sample). Mechanistic studies reveal that the combined effects of Y 2 O 3 and rGO effectively facilitate electron/ion transport, suppress electrode-electrolyte interfacial side reactions, mitigate volume change stress, and enhance structural integrity. This work offers new insights for designing high-stability cathode materials for sodium-ion batteries.
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Desalination and Water Treatment
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2024
·
IF 1
Lu Peng,Peng Nian,Jingwei Feng,Xiangxiang Han,Binhua Cui,Songsheng Lu,Jie Zhang,Chenming Li,Aiyong Zhang
The present study evaluated fabrication of bioactivated carbon (BAC) from waste activated sludge (WAS) for methyl tert-butyl ether (MTBE) removal from aqueous solution. BACs were prepared using KOH, H 3 PO 4 , and ZnCl 2 as chemical activation reagents, followed by thermal activation. Batch experiments with different BAC types and dosages, solution pH, initial MTBE concentrations, and contact times were conducted to investigate the BAC effectiveness. The obtained data were analyzed using the kinetics and isotherm model and also with artificial neural network (ANN). The result of Fourier transform infrared (FTIR) spectra of WAS and BAC was depicted that the C–H and C–C were major surface functional groups. The ZnCl 2 activated carbon had the highest adsorption capacity for MTBE adsorption, followed by H 3 PO 4 and KOH activated carbons. The results showed that the highest MTBE removal was observed at solution pH equal to 4 and approximately 30% of MTBE could be adsorbed with 30 min contact time. It was also found that MTBE adsorption followed the R–P isotherm and pseudo-second order (type 1) kinetic models. During ANN modeling, the optimum neurons number for Levenberg–Marquardt training algorithm was determined equal to 5 with highest R 2 value and lowest mean square error were found to be 0.99 and 5.7 × 10 –4 , respectively.
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MOLECULES
·
2022
·Vol. 27
·期 19
·6518
·
IF 4.927
Xinjiang Zhang,Meng He,Yongzhong Zhan,Wenchao Yang,Kaifeng Wu
Copper matrix composites have a wide application as magnetic conductive materials, electromagnetic materials, electrical discharge machining materials, etc. Such materials are expected to have a good combination of excellent electrical conductivity and good mechanical strength. In this work, micro/nano hybrid reinforcements with Fe microspheres and reduced graphene oxide (rGO) nanosheets were developed for copper matrix composites. The rGO/Fe/Cu powders were firstly wet-mixed and then densified by the vacuum hot-pressing sintering to obtain the bulk compacts. Microstructure, electrical conductivity and mechanical properties of such compacts were investigated. Microstructural result of as-sintered compacts shows that the Fe microspheres could distribute in the matrix uniformly, and rGO nanosheets exhibit both agglomerated and dispersed states. The grain size of Cu matrix decreased with the increase of the rGO content. Hardness, compression and tensile 0.2% yield strength of the as-sintered compacts were improved evidently by the addition of the hybrid Fe/rGO, comparing with pure Cu and single Fe-added composites. However, a lower electrical conductivity appeared in the more rGO-added composites, but still reached more than 33.0% international annealing copper standard (IACS). These performance change could be sought in the spatially geometrical distribution and characteristics of such micro/nano Fe/rGO hybrid addition, and the relevant mechanisms were discussed.
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CHEMICAL PHYSICS LETTERS
·
2024
·
IF 2.8
Fan Zhao,Huiling Du,Zhuo Li,Qianqian Li,Jie Lu,Na Cao,Yupu Shi
Ga 2 O 3 has been used as an anode for lithium batteries due to its high theoretical capacity. However, limited electronic conductivity and severe volume expansion limit its application. Herein, to circumvent these issues, we proposed to design multiscale interface of Ga 2 O 3 @rGO. It was synthesized to achieve superior multiplicative performance (218 mAh g −1 at 5.0 A g −1 ) and cycling performance (428.7 mAh g −1 after 100 cycles at 100 mAh g −1 ). These findings suggest that the nanoscale morphology of Ga 2 O 3 and nanographene work together to promote electron transfer, ultimately enhancing the cycling stability of the composites.
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Small
·
2026
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IF 11.8
Xin Li,Xinyu Zhu,Shaorou Ke,Shitao Min,Shujie Yang,Wenhao Peng,Yanghong Li,Zhaohui Huang,Minghao Fang,Fengmei Wang,Xin Min
The accelerating transition to clean hydrogen energy demands highly efficient and stable platinum-based electrocatalyst for the hydrogen evolution reaction (HER). However, achieving uniform low-Pt-loading catalysts remains challenging due to weak interfacial interactions and inadequate dispersion control. Herein, we developed a synergistic interfacial coordination engineering strategy through integrating freeze-drying with transient non-equilibrium Joule heating, enabling the ultrafast synthesis of uniformly dispersed 1.84 ± 0.58 nm Pt nanoclusters on the reduced graphene oxide (i.e., Pt@rGO-T) within 20 s. Structural characterizations and theoretical calculations reveal that oxygen anchoring sites and chlorine coordination cooperatively strengthen the electron–metal–support interaction and modulate the Pt d-band center, thereby tuning the H* adsorption free energy toward a more favorable, near-thermoneutral range. Notably, this interfacial configuration may promote interfacial modulation and possible H* migration between Pt nanoclusters and the rGO support. As a result, the Pt@rGO-T delivers low overpotentials of 29.6 and 73.0 mV at 10 and 100 mA cm −2 , respectively, along with a high mass activity of 6.23 A mg −1 and excellent durability over 200 h. This transient thermal engineering strategy offers a generalizable pathway for the rational design of interfaces and coordination environments in advanced noble metal-based electrocatalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Linlin Li,Svetlana Mintova,Chunzheng Wang,Xianchao Li,Xianglong Meng,Jinshe Chen,Chao Feng,Hailing Guo
● Highly dispersed Co 2 P anchored onto PEI-stabilized N-rGO layers. ● Gas production rate of 517 mL g −1 h −1 with 100% H 2 selectivity. ● Uniform heterointerface with highly accessible interfacial sites. ● Energy barrier reduction by optimized electronic modulation of interfacial Co δ+ . Heterointerface engineering is an effective strategy for constructing strong metal–support interactions and regulating the electronic structure of metal active centers. In this study, the two-dimensional (2D) architecture of N-doped reduced graphene oxide (N-rGO) was employed to construct a uniform and highly accessible heterointerface with Co 2 P nanoparticles, thereby optimizing the electronic structure of Co 2 P for efficient hydrogen production from liquid-phase formic acid (FA). Specifically, polyethyleneimine (PEI) was introduced to stabilize the layered structure of rGO during calcination by intercalating between GO sheets, along with interacting with functional groups on GO via electrostatic interactions and hydrogen bonding. Meanwhile, PEI served as a nitrogen source to promote N doping of rGO and increase effective anchoring sites, such as pyridinic N. The resulting Co 2 P@N-rGO (PEI&phen) catalyst simultaneously achieved high Co 2 P dispersion, exposed interfacial sites, and efficient electron transfer, thereby exhibiting excellent FA dehydrogenation activity with a gas generation rate of 517 mL g −1 h −1 and H 2 selectivity of 100%. This activity was significantly higher than that of the PEI-free counterpart, in which the N-rGO structure was severely damaged, and also exceeded the activities reported for some noble-metal catalysts (e.g., Pd/C, Pt/C) and single-atom cobalt catalysts. XPS characterization and density functional theory (DFT) calculations demonstrated that the abundant Co–N interfacial sites in Co 2 P@N-rGO (PEI&phen) induced interfacial charge redistribution and optimized the electronic structure of Co 2 P species. In situ DRIFTS and DFT calculations confirmed that FA dehydrogenation over this catalyst proceeded through a formate (HCOO*) pathway, while the construction of the Co 2 P/N-rGO heterointerface significantly lowered the energy barrier of the key reaction step, thereby enhancing the catalytic activity. Download: Download high-res image (248KB) Download: Download full-size image
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·596
·
IF 5.4
Wang Wenzhuo,Lu Juan,Jiang Hanyue,Han Pengfei,Ma Guangping,Li Ruixin,Mao Huiyuan,Ma Tengying,Wang Jing,Chen Ruizhan,Tian Li
A dual-mode sensing platform has been developed for ultrasensitive malathion (MAT) detection based on bifunctional rGO@ZnO/Zn-Fe 3 O 4 composites (reduced graphene oxide-supported ZnO nanorods and Zn-doped Fe 3 O 4 microspheres). The rGO@ZnO/Zn-Fe 3 O 4 nanozyme is fabricated via a one-pot hydrothermal strategy and integrates favorable electrochemiluminescence (ECL) emission and intrinsic peroxidase-mimicking activity to realize dual-signal readout. In the K 2 S 2 O 8 ECL system, Au NPs@UiO-66 serves as a coreactant booster to further magnify the ECL intensity of the composite. Meanwhile, the nanozyme catalyzes the H 2 O 2 -mediated oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to produce a colorimetric response. MAT suppresses both ECL and colorimetric responses by occupying Fe 2+ /Fe 3+ catalytic sites and scavenging of reactive radicals. The sensor achieves limits of detection as low as 2.8 × 10 –13 mol/L under ECL mode and 1.32 × 10 –6 mol/L under colorimetric mode. In practical testing of MAT-spiked vegetable samples, the sensor exhibits acceptable recoveries and low relative standard deviations, demonstrating its practicability for field food safety supervision and rapid pesticide residue screening. Graphical abstract
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ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Jialei Dong,Jixing Bai,Liu Yang,Haiyan Zhang,Junbo Qi,Saina Zheng,Yue Wang,Huiyan Zhang,Qi Cao
Layer engineering is widely applied in two-dimensional materials to achieve tunable and optimal properties. Graphene oxide (GO) nanosheets, as carbon-based carriers, offer various advantages for electromagnetic wave (EMW) absorption, including high specific surface area, tunable conductivity, and abundant polar functional groups. Nevertheless, the regulation of layer numbers of GO-based composite absorbents, and comprehensive understanding of the underlying mechanisms influencing the EMW absorption properties remain insufficient. This study converts ZIF-67/GO into Co/rGO composites, and employs the layer engineering via ultrasonic-assisted calcination, to investigate the influences of GO layer numbers on the material’s EMW absorption performance. In the optimized Co/rGO, few-layer GO forms a better conductive network, while the well-dispersed Co nanoparticles introduce magnetic loss and assist in achieving impedance matching. As a result, this sample delivers considerable absorption performance, with a minimum reflection loss of −49.86 dB and an effective absorption bandwidth of 5.35 GHz. Following additional heteroatom doping, the Co/rGO composite could further achieve an absorption efficiency of above 99.9999% (−68.02 dB), which efficiently reduce EMW signals from highly reflective targets to background noise level. This study confirms the effectiveness of layer engineering in regulating electromagnetic properties and thereby enhance the absorption performance of carbon-based composites to achieve strong and broadband EMW absorption. Through layer engineering and doping treatment, Co/rGO composites achieve strong and broadband EMW absorption performance. This study comprehensively reveal the correlations between microstructure and electromagnetic properties of 2D Co/rGO composites. Download: Download high-res image (201KB) Download: Download full-size image
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APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Linke Zhao,Yang Li,Lili Li,Gongke Wang,Hairui Liu,Hongjing Li,Arif Nawaz,Haifa Zhai
A Z-scheme CIS/rGO/p-CN heterostructure was designed. • CIS/rGO/p-CN exhibits the highest visible-light activity for Cr(VI) photoreduction. • rGO serves as the solid-state electron mediator to switch the charge transfer mode. Hexavalent chromium (Cr (VI)), a highly toxic metal ion readily soluble in aqueous environments, poses significant threats to human health. Herein, a novel Z-scheme CuInS 2 /rGO/protonated g-C 3 N 4 heterostructure was designed with rGO serving as the solid-state electron mediator between CuInS 2 and protonated C 3 N 4 . The samples were systematically characterized using XRD, FTIR, SEM, TEM, XPS, PL, and UV–vis spectroscopy techniques. This flower-like hierarchical structure CuInS 2 /rGO/protonated g-C 3 N 4 exhibits enhanced visible-light photocatalytic activity for Cr (VI) photoreduction. Specifically, it demonstrates a 98% reductive efficiency for Cr (VI) within 20 min at pH= 4 and stable photocatalytic performance. The results indicate that the integration of rGO nanosheets significantly enhances the photocatalytic performance of the CuInS 2 /rGO/protonated g-C 3 N 4 heterostructure by weakening the built-in electric field between CuInS 2 and protonated C 3 N 4 and switching the charge transfer mode from a conventional p-n junction to a Z-scheme mechanism. Download: Download high-res image (103KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）