Nano Energy
·
2024
·
IF 16.8
Hao Zhang,Dongzhi Zhang,Yan Yang,Lina Zhou,Yukun Liu,Wenzhe Liu,Yuehang Sun,Yihong Guo,Yuncheng Ji
As atmospheric issues and energy crises worsen, developing environmentally friendly, low-cost, high-performance self-powered gas sensing systems for gas pollutant monitoring is crucial for the development of ecological civilization. In this work, an eco-friendly self-powered nitrogen dioxide (NO 2 ) sensor (EFNS) system based on an eco-friendly triboelectric nanogenerator (EF-TENG) is reported. The system comprises a power supply unit (EF-TENG) and a sensing unit (In 2 O 3 /PPy sensor), connected through a signal stabilization circuit. EF-TENG utilizes eco-friendly and biodegradable gelatin and PLA/PBAT as the friction layer. By introducing leaf structures on the gelatin surface using a template method , the output voltage and current of EF-TENG were increased by 1.44 and 1.67 times, respectively. The peak power density and root mean square power density of EF-TENG reached 1386 mW m −2 and 185.35 mW m −2 , respectively. Additionally, EF-TENG exhibited excellent long-term stability, maintaining a stable output voltage (∼24 V) after rectification and voltage stabilization treatment under conditions of 15–55°C and 40–80 % RH . Additionally, an In 2 O 3 /PPy heterostructure sensor was prepared, and the EFNS system was constructed through impedance matching effects, revealing the NO 2 response mechanism of the In 2 O 3 /PPy heterostructure . This achieved a wide detection range and highly sensitive (V g /V a = 355 %@30 ppm) detection of NO 2 . This work provides insights into eco-friendly self-powered gas sensors and sensing mechanisms, offering ideas for the development of environmental monitoring sensors and clean energy harvesting devices.
研究领域:
环境科学
·
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
BIOCONJUGATE CHEMISTRY
·
2022
·
IF 6.069
Chunxiao Sui,Rui Tan,Zifan Liu,Xiaofeng Li,Wengui Xu
Imaging-guided photothermal therapy (PTT) in a single nanoscale platform has aroused extensive research interest in precision medicine, yet only a few methods have gained wide acceptance. Thus, it remained an urgent need to facilely develop biocompatible and green probes with excellent theranostic capacity for superior biomedical applications. In this study, a smart chemical oxidative polymerization strategy was successfully developed for the synthesis of Au@PPy core–shell nanoparticles with polyvinyl alcohol (PVA) as the hydrophile. In the reaction, the reactant tetrachloroauric acid (HAuCl4) was reduced by pyrrole to fabricate a gold (Au) core, and pyrrole was oxidized to deposit around the Au core to form a polypyrrole (PPy) shell. The as-synthesized Au@PPy nanoparticles showed a regular core–shell morphology and good colloidal stability. Relying on the high X-ray attenuation of Au and strong near-infrared (NIR) absorbance of PPy and Au, Au@PPy nanoparticles exhibited excellent performance in blood pool/tumor imaging and PTT treatment by a series of in vivo experiments, in which tumor could be precisely positioned and thoroughly eradicated. Hence, the facile chemical oxidative polymerization strategy for constructing monodisperse Au@PPy core–shell nanoparticles with potential for cancer diagnosis and imaging-guided photothermal therapy shed light on an innovative design concept for the facile fabrication of biomedical materials.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Xiutian Guo,Jiale Yao,Fengxian Ji,Rui Wang,Longyun Hao
In this study, a stable silver@polypyrrole (Ag@PPy) composite was prepared with the help of sodium dodecyl sulfate (SDS) and polymerizable surfactant ammonium allyloxynonylphenol ethoxylate (DNS-86). It was then combined with polyurethane acrylate (PUA) to prepare a conductive ink and applied on the surface of cotton fabric. By an energy-saving and sustainable UV curing method, the ink was effectively fixed to fabricate flexible and durable textile. The effects of DNS-86 on the properties of Ag@PPy composite were investigated and the results showed that DNS-86 could reduce its size, make its distribution more uniform and improve its stability. Then, the effects of DNS-86 on the performance of conductive coating on fabric were analyzed by measuring the resistance and water contact angle, revealing that DNS-86 could participate in the UV film-forming reaction of PUA molecules, so as to optimize the film structure for higher conductivity. Finally, the effect of DNS-86 on the flexibility and durability of conductive coating were evaluated. The results indicated that DNS-86 could improve the structural integrity and toughness of PUA film, enhance the adhesion between conductive coating and cotton surface, and make it more resistant to various environmental erosions.
研究领域:
材料科学
·
纺织工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xi Lin,Chenchen Wang,Chaoqun Zhang,Qi Guo,Chuanshuang Hu,Yi Yang,Yonghui Zhou,Xiuyi Lin,Weiwei Zhang,Jiangtao Xu
The high carrier mobility of conductive polymers/polypyrrole (PPy) exhibits an inherent antagonism with the dielectric polarization loss required for microwave absorption materials. The excessively continuous electron transport in traditional PPy conductive networks leads to dominant electromagnetic wave reflection, rendering effective absorption challenging. The design of microstructures to reconstruct electron transport pathways in PPy while maintaining moderate conductivity and introducing controlled defects and polarization centers remains a significant challenge in achieving the functional transition from conductive loss to dielectric loss. This study addresses this by precisely constructing heterointerfaces through in-situ confined polymerization, achieving molecular coupling between bacterial nanocellulose (BNC) and PPy. This approach transcends the limitation of traditional conductive polymers with single shielding functions, enabling intelligent conversion of PPy-based materials from electromagnetic shielding to microwave absorption. By designing an asymmetric gradient structure, the composites achieve a minimum reflection loss (RL min ) of −53 dB at a thickness of 4 mm and an effective absorption bandwidth (EAB) covering the entire X-band (8.2–12.4 GHz) at 3.57 mm, a synergistic regulation paradigm of structure-composition-dielectric properties is established. Meanwhile, the fabricated aerogel maintains robust microwave absorption performance under acidic, alkaline, and high-temperature conditions, demonstrating exceptional environmental stability. This work provides a viable and sustainable strategy for developing green electromagnetic absorption materials, offering insights into balancing conductivity and polarization loss in conductive polymer systems to achieve efficient microwave dissipation.
研究领域:
材料科学
·
高分子科学
·
电磁学
·
纳米技术
·
微波工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Hong Lei,Yang Qiu,Zhijuan Pan,Bin He,Tao Yan
The development of conductive polyester (PET) fibers is of great significance in increasing their added value and application in functional textiles. However, the continuous preparation of conductive PET fibers with high strength and durability is still a challenge. In this work, polypyrrole/waterborne polyurethane (PPy/WPU)/PET composite conductive fibers (PWPFs) were continuously prepared by in-situ polymerization of blended pyrrole (Py)/WPU. The study investigated the effects of alkali concentration and treatment time on the moisture regain rate of PET fibers to improve the hydrophilicity. The effects of polymerization cycles and mass fraction of WPU on the microstructure and electrical property of PWPFs were studied. The result demonstrated that the moisture regain of PET fibers increased from 0.45 % to 1.13 % when treated in a 50 g/L NaOH solution for 6 h. A stable composite structure of WPU/PPy was formed on the surface of conductive PET fibers, prepared with 5 polymerization cycles and a WPU mass fraction of 5 wt%, achieving a resistance of 58.41 kΩ/cm. The PPy/WPU composite conductive layer partially compensated for the mechanical properties lost by PET fibers during alkaline treatment. Notably, the abrasion resistance and washing resistance of PWPFs were excellent. The conductivity of PWPFs was highly correlated with the environmental humidity, temperature, salinity, and ultraviolet light irradiation and recoverable when environmental conditions underwent cyclic changes, which demonstrated that the PWPFs could be used for multi-functional sensing applications.
研究领域:
材料科学
·
高分子科学
·
纺织工程
·
传感技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Fenyang Tian,Shuo Geng,Lin He,Yarong Huang,Akhmat Fauzi,Weiwei Yang,Yequn Liu,Yongsheng Yu
Transition metal phosphides have shown Pt-like hydrogen evolution reaction (HER) activity in acid and alkaline solution, while their HER performance in neutral-pH is really poor owing to the high resistance and inefficient mass transfer in neutral-pH electrolyte. In this work, the well-arranged core/shell PSS-PPy/Ni-Co-P growing on Cu foil, in which Ni-Co-P is the core and the mixed polymer of pyrrole and sodium polystyrene sulfonate is the shell, has been demonstrated to be a highly efficient electrocatalyst for HER in neutral-pH electrolyte. The PSS-PPy/Ni-Co-P/CF self-supporting electrode was easily synthesized by electrodeposition and chemical deposition at room temperature. According to the experiment and DFT calculation results, PSS-PPy not only improves the conductivity and hydrophilicity of Ni-Co-P, but also optimizes the electronic structure of Ni-Co-P. Thus, the PSS-PPy/Ni-Co-P shows remarkable HER activity with only overpotential of 106 and 67 mV at the current density of 10 mA cm −2 in neutral-pH and alkaline electrolytes, respectively. Furthermore, PSS-PPy/Ni-Co-P has excellent stability in neutral-pH, alkaline electrolytes and even seawater. The current surface modification method directs us to design more low-cost, high-efficiency and stable electrocatalysts for HER in neutral-pH electrolyte.
研究领域:
材料科学
·
电化学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2015
·Vol. 8
·期 2
·1040-1048
·
IF 7.394
Xiaojuan Huang,Bo Li,Chen Peng,Guosheng Song,Yuxuan Peng,Zhiyin Xiao,Xijian Liu,Jianmao Yang,Li Yu,Junqing Hu
Imaging guided photothermal agents have attracted great attention for accurate diagnosis and treatment of tumors. Herein, multifunctional NaYF4:Yb/Er@polypyrrole (PPy) core–shell nanoplates are developed by combining a thermal decomposition reaction and a chemical oxidative polymerization reaction. Within such a composite nanomaterial, the core of the NaYF4:Yb/Er nanoplate can serve as an efficient nanoprobe for upconversion luminescence (UCL)/X-ray computed tomography (CT) dual-modal imaging, the shell of the PPy shows strong near infrared (NIR) region absorption and makes it effective in photothermal ablation of cancer cells and infrared thermal imaging in vivo. Thus, this platform can be simultaneously used for cancer diagnosis and photothermal therapy, and compensates for the deficiencies of individual imaging modalities and satisfies the higher requirements on the efficiency and accuracy for diagnosis and therapy of cancer. The results further provide some insight into the exploration of multifunctional nanocomposites in the photothermal theragnosis therapy of cancers.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF PHYSICS
·
2025
·
IF 4.6
Hanzhaobing Wu,Jin Xu,Hongping Zhao,Baolong Shi,Yu Wan,Hao Sun,Dalei Wang,Changwei Bi,Chao Wang,Wei Liu
Thiabendazole (TBZ) and thiram are widely used fungicides in agricultural production for effective disease control. However, their persistent environmental accumulation and migration lead to excessive residues in soil, groundwater, and other matrices, causing severe contamination and significant human health risks. In this study, TiO₂/PPy (polypyrrole) composites were synthesized via an eco-friendly chemical method to develop a photoelectrochemical (PEC) sensing platform for TBZ and thiram detection. The conductive PPy incorporation significantly enhanced TiO₂'s charge separation efficiency, yielding a notable photocurrent response (∼6 μA/cm²). The fabricated PEC sensor demonstrated reliable detection performance for both fungicides.
研究领域:
环境科学
·
材料科学
·
分析化学
·
传感技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Yiqing Wu,Xiangmei Ma,Bin Wang,Yanan Li,Shengtao Gao
The detrimental effects of ultraviolet (UV) and electromagnetic (EM) radiation on human health and physiological functions are well documented. The development of efficient shielding materials to mitigate these effects is therefore an urgent necessity. In this study, Zn/Ti-LDH@Ce/Fe-MOF@PPy composites were successfully prepared by hydrothermal synthesis and interfacial polymerisation. The properties of the composites were compared and analysed with those of pure Zn/Ti-LDH and Ce/Fe-MOF, and the results show that the prepared materials have excellent comprehensive properties, with a broad EAB of 5.2 GHz and a RL min of −46.2 dB at 14.8 GHz at the thickness of 3 mm, while exhibiting excellent UV shielding capability.The present study offers novel concepts and efficacious methodologies for the engineering of high-performance microwave absorbing and UV shielding materials.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Xueqin Wang,Jinguo Jiang,Qingqing Zhang,Zhongchen Bai
The Ag/PPy@PEDOT:PSS film was used as a Surface-enhanced Raman scattering (SERs) substrate to directly detect the low concentration of sodium formaldehyde sulfoxylate (SFDS) molecules in solution. We prepared the PPy@PEDOT:PSS film by electrochemical potentiostatic (ECP) method and then directly grew Ag nanoparticles on its surface to prepare the SERs substrate of Ag/PPy@PEDOT:PSS film. The results showed that with the increase of depositional time of Ag nanoparticles, accordingly, the size and density of Ag nanoparticles could be increased on the film surface, and their SERs effect was also enhanced gradually; this SERs substrate could sensitively detect the SFDS molecules in aqueous solution. Moreover, the minimum detection limit was up to 1 ng/mL. This preparing and detecting method of SERs substrates provides a new way for the preparation of high sensitivity SERs substrate and for direct and rapid detection of low concentration of SFDS molecules in food and drug.
研究领域:
材料科学
·
分析化学
·
食品安全检测
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Yuxin Bi,Mingliang Ma,Zhengguo Jiao,Yong Ma,Dongshuai Hou,Guoying Geng,Wenxuan Feng,Aijie Ma,Mingtao Qiao,Yanyan Liu
Electrospinning is one of the attractive technologies for fabrication carbon-based fibers due to its high efficiency, component controllability and functionalities. Here, a multi-step strategy was used for the efficient synthesis of one-dimensional (1D) MOF-derived C@Co/N-doped carbon@polypyrrole (C@Co/NC@PPy) composite fibers . The composite fibers synthesized by introducing the electrospinning method possessed unique structural anisotropy and multiple absorption mechanisms. The electromagnetic parameters , the absorption performance and the internal mechanisms of samples were thoroughly illustrated. By adjusting the filler loadings of samples, the electromagnetic wave (EMW) absorption could be optimized. The C@Co/NC@PPy with 35 wt% filler loading showed the optimal performance. Impressively, with a thickness of merely 1.65 mm, the C@Co/NC@PPy composite fibers delivered high performance with the minimum reflection loss (RL min ) of -72.14 dB. Correspondingly, the maximum effective absorption bandwidth (EAB max ) could reach 5.6 GHz with the thickness of 1.88 mm. Furthermore, the 35 wt% loading C@Co/NC@PPy composite fibers could reach 14.28 GHz (89.25% of 2–18 GHz) effective absorption, showing the ultrawide absorption. Those positive results forcefully verified that the 1D MOF-derived C@Co/NC@PPy composites showed great potential and superiority as EMW absorption material .
研究领域:
材料科学
·
电磁工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Zihan Chen,Xihong Zu,Liheng Chen,Yi Qi,Wenbin Jian,Yaoying Wu,Wenli Zhang,Xuliang Lin,Guobin Yi,Quanbing Liu,Zilun Tang,Jianyu Wu,Huafeng Dong,Yanlin Qin
The development of high-performance flexible supercapacitors is desperately desired for application in wearable electronics, but the fabrication of a flexible self-supporting 3D electrode with light weight and high energy density remains challenging. Herein, we report an approach to fabricate the flexible self-supporting and lightweight 3D G-PPy@Fe-MnCo2O4 hierarchical electrode for flexible solid-state supercapacitors (FSSCs), which utilizes the active material 3D G-PPy as a substrate to vertically grow Fe-MnCo2O4 nanowire (NW) arrays. Importantly, the experimental results and DFT simulations indicate that Fe-MnCo2O4 NWs obtain metallic characteristics by doping Fe into a MnCo2O4 lattice, which induces the free propagation of electrons in the electrode. Thus, MnCo2O4 utilization efficiency and cycle performance are both greatly enhanced. The electrode has a high areal specific capacitance of 5136 mF cm–2 (422.4 F g–1) at 2 mA cm–2 with long-term cycle stability. The capacitance retention is about 94.7% after 7000 cycles. It presents a viable design route toward advanced wearable energy storage devices.
研究领域:
材料科学
·
能源存储技术
·
纳米技术
✓ 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）