COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Chunxia Pang,Huanhuan You,Lili Liang,Zhanguo Li,Xiaoyan Lin,Yaping Zhang,Hao Zhang,Xunhai Pan,Yang Hu,Yan Chen,Xuegang Luo,Haijun Wang
Radioactive aerosols in confined spaces of workplaces are the main source of internal radiation hazards for staff. Therefore, biomass-based electret fiber materials as alternatives of petroleum-based polymers will be of great potential in capturing radioactive aerosols due to its biodegradability , renewability and electrostatic effects. Herein, a fabrication strategy of bamboo pulp-based electret fiber aerogels by corona polarization is reported grounded on p-phenylenediamine (PPD)-modified bamboo pulp fibers (BCFs) and ethyl cellulose (EC). The morphology, chemical structure , and physical properties of BCFs before and after modification, as well as the electret properties and purification performance of fiber aerogel were analyzed. The results showed that PPD can be grafted uniformly on the surface of BCFs, making the fibers transform from irregular cylindrical shape with hierarchical surface to regular cylindrical shape with smooth surface, and can improve the surface potential of the fibers, one of the considerably great electret properties, from 0.00 kV to 1.33 kV when the graft amount of PPD was 0.500 g/g. The improvement in surface potential, leading by the grafted PPD structure which is a charge-trapping site confirmed by stoichiometric calculations, enhance the electrostatic trapping effect of the fibers on radioactive aerosol particles and shorten the purification time from 26 min to 15 min. Moreover, the electret fiber aerogel with modified BCFs (named as PPD-DABCFs) has a low air resistance of 56 Pa at the flow speed of 5.3 cm·s −1 , a light base weight of 62.7 g·m −2 and a long service life. Therefore, the bamboo pulp-based electret fiber aerogel has a promising application in the field of radioactive aerogel purification.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Shaopei Jia,Yifan Cheng,Quan Huang,Qisong Li,Qian Zhang,Zhixin Wang,Yan Zhang,Niu Zhang,Yunchao Mu
Developing inexpensive and efficient electrocatalysts for hydrogen evolution reaction (HER) in both acidic and alkaline mediums is of great significance to the hydrogen energy industry. Hereby, we prepared a mixture of precursors with homogeneous composition by using the chelating ability of soybean protein isolate (C and N source) and phytic acid (dopant and phosphating agent) with cobalt ions , and achieved one-step synthesis and construction of Co 2 P/N–P co-doped porous carbon composite by carbonization at 800 °C. The as-synthesized Co 2 P/NPPC-800 electrocatalyst exhibits low HER overpotentials of 121 and 125 mV at 10 mA cm −2 in 0.5 M H 2 SO 4 and 1.0 M KOH, which are close to those of the commercial Pt/C catalyst. Additionally, the NPPC substrate surrounding the Co 2 P could diminish the corrosion during the HER, and Co 2 P/NPPC-800 displays good stability and durability. Furthermore, this work offers a convenient synthesis strategy for phosphide/doped porous carbon composites in other electrochemical energy technologies.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tianyu Wang,Chen Zhao,Linghui Meng,Yujia Li,Hongyu Chu,Fei Wang,Yingru Tao,Wen Liu,Chong-Chen Wang
Sulfadiazine (SDZ), as a broad-spectrum pharmaceutical antibiotic, has drawn extensive attention owing to its wide application and persistence. Photocatalytic oxidation has been considered as a high-efficiency and environment-friendly technology for degrading organic contaminants. A novel BiOI/UiO-66 p-n heterojunction (BiU- x ) was fabricated via the in-situ deposition of p-type BiOI nanoplates on n-type UiO-66 octahedrons with the aid of a controlled precipitation method. The optimizing BiU-9 heterojunction exhibited a remarkably enhanced photocatalytic efficiency in removing SDZ, in which the SDZ (5 mg/L) removal efficiency over BiU-9 (0.5 g/L) reached nearly 100 % within 90 min of visible light irradiation. The influence of some important environmental factors (e.g., photocatalyst dosage, pH, co-existing inorganic anions and real sunlight irradiation) were systematically investigated. Such improvement mechanism should be assigned to the following three factors. Firstly, the introduction of narrow gap semiconductor BiOI effectively improved photo adsorption capacity. Secondly, benefiting by the large specific surface area, the involvement of UiO-66 contributed to boost the surface active sites. Most importantly, an internal electric field at the contact interface between UiO-66 and BiOI accelerated the separation of photo-generated electrons and holes. Furthermore, · O 2 − and photo-generated holes were identified as the dominating reactive species accounting for the SDZ removal. The decomposition pathways of SDZ and ecotoxicities of the intermediates were analyzed via combing with LC-MS/MS and T.E.S.T theoretical calculation. This work may provide an alternative way for enhanced photocatalytic performance of MOF-based materials through construction of p-n heterojunction with bismuth-based semiconductors.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 3
·732-739
·
IF 2.936
Li Jianying,Liu Rong,Ye Qian,Cai Mingzhong
[RuCl 2 ( p -cymene)] 2 in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be a highly efficient catalyst for the annulation of N -methoxybenzamides with alkynes. The reaction proceeded smoothly at 60 ºC with MesCO 2 K as a cocatalytic additive under external oxidant-free conditions, delivering a variety of substituted isoquinolones in mostly good to excellent yields. The isolation of the crude products can be easily performed by extraction with diethyl ether and more importantly, [RuCl 2 ( p -cymene)] 2 /PEG-400/H 2 O system could be facilely recycled and reused more than six times without any apparent loss of catalytic efficiency. Graphical Abstract
Ruthenium-catalyzed annulation of N -methoxybenzamides with alkynes leading to isoquinolones by using [RuCl 2 (p-cymene)] 2 /PEG-400/H 2 O as a highly efficient and recyclable catalytic system is described.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 20
·2108094
·
IF 15.153
Chongchao Yao,Jiaxin Li,Zhihao Zhang,Chunli Gou,Zhongshen Zhang,Gang Pan,Jing Zhang
Projecting a cost-effective and highly efficient electrocatalyst for the oxygen reaction reduction (ORR) counts a great deal for Zn-air batteries. Herein, a hierarchical core–shell ORR catalyst (Co 2 N/CoP@PNCNTs) is developed by embedding cobalt phosphides and/or cobalt nitrides as the core into N, P-doped carbon nanotubes (PNCNTs) as the shell via one-step carbonization, nitridation, and phosphorization of pyrolyzing Co-MOF precursor. The globally N, P-doped structure of Co 2 N/CoP@PNCNTs demonstrates an outstanding electrocatalytic activity in the alkaline solution with the onset and half-wave potentials of 1.07 and 0.85 V respectively. Moreover, a Zn-air battery assembled from Co 2 N/CoP@PNCNTs as the air cathode delivers an open circuit potential of 1.49 V, a maximum power density of 151.1 mW cm −2 and a specific capacity of 823.8 mAh kg −1 . It is reflected that Co 2 N/CoP@PNCNTs provides a long-term durability with a slight decline of 15 h in the chronoamperometry measurement and an excellent charge–discharge stability with negligible voltage decay for 150 h at 10 mA cm −2 in Zn-air batteries. The results reveal that Co 2 N/CoP@PNCNTs has superiority over most Co-N x -C or Co x P@C catalysts reported so far. The excellent catalytic properties and stability of Co 2 N/CoP@PNCNTs derive from synergistic effects between Co 2 N/CoP and mesoporous N, P-doped carbon nanotubes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 5
·1-9
·
IF 6.408
Zhu Anni,Wang Tiansheng,Jiang Yuning,Hu Sen,Tang Wanxin,Liu Xinling,Guo Xiaoyu,Ying Ye,Wu Yiping,Wen Ying,Yang Haifeng
A specific surface-enhanced Raman scattering (SERS) assay for dopamine (DA) based on an azo derivatization reaction is proposed for the first time by preparation of p-aminothiophenol (PATP)-modified composite SERS substrate, composed of metal–organic framework (MIL-101) decorated with Au and Ag nanoparticles. As the result, the SERS method for detection of the azo reaction between PATP and DA exhibits superior sensitivity, selectivity, and stability. A reasonable linearity in the range 10 −6 to 10 −10 mol∙L −1 is achieved, and the limit of detection is 1.2 × 10 −12 mol∙L −1 . The reactive SERS assay is free from interference in complex physiological fluid. The feasibility of the proposed SERS method for the detection of DA levels in fetal bovine serum (FBS) samples and human serum samples is validated by HPLC–MS methods, displaying promising application potential in early disease diagnosis. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shuaiyan Ji,Wei Li,Ningning Lv,Xiaoting Chen
The superhydrophilic/underwater superhydrophobic membrane offers unique advantages in effectively separating oily wastewater. However, the development of membrane materials that can efficiently separate emulsions only under gravity is still a challenge. A crosslinked network copolymer P(MA-AMPS) was synthesized by radical polymerization of N, n-methylenebisacrylamide (MBA), methacrylamide (MA) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) initiated by potassium persulfate. Then polyvinyl alcohol (PVA) and nano-SiO 2 were inserted to the crosslinked polymer system in order to prepare a P(MA-AMPS)/PVA@SiO 2 hybrid hydrogel. The hybrid hydrogel can be sprayed on the surface of stainless steel mesh (SSM) by a simple spraying method, so as to achieve superhydrophilicity/underwater superoleophobicity. The oil-water emulsion permeation flux reached more than 352.94 L·m −2 ·h −1 , while xhibiting a more than 99.5 % separation efficiency under gravity. The anti-fouling tests demonstrated that the membrane exhibited outstanding anti-fouling performance. Moreover, the combination of stable semi-interpenetrating networks and nanoparticles made the membrane exhibit excellent stability and durable separation ability in complex physicochemical environments.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2023
·
IF 5.5
Yiming Hu,Wenchang Li,Lin Li,Jinhong Wu,Shizhan Sheng,Huihua Wang
Developing impressive and low-cost electrocatalysts for hydrogen evolution reaction (HER) is the key for large-scale application of hydrogen production . Herein, a series of non-noble Ni-Mo-P coatings were achieved in the ChCl-EG electrolyte through a facile electrodeposition method under different experimental conditions. The 0.6Ni-0.21Mo-0.066 P coating fabricated at 30 mAcm −2 exhibits an impressive HER catalytic activity for delivering a current density of 10 mAcm −2 at only an overpotential of 57 mV in 1 M KOH electrolyte, ascribing to the synergistic effect of Ni, Mo and P elements and regulated electron structures, as well as large electrochemical active areas produced in the ChCl-EG electrolyte. Moreover, the 0.6Ni-0.21Mo-0.066 P coating demonstrates a pronounced electrocatalytic stability toward HER in the long-term test due to its obviously small inners tress. The outstanding HER performance of 0.6Ni-0.21Mo-0.066 P coating, along with facile and scalable fabrication method, highlights the potential application in the field of electrocatalytic water splitting.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Cen Zhang,Xiaonan Zhu,Fei Gao,Liu Yang,Weizhen Liu
The development of wavelength adjustable electrically driven panchromatic display light-emitting devices (LEDs), a future direction for lighting sources, still seems necessary because of great development prospects and practical significance. Herein, perovskite quantum dots (QDs) of CsPbBr 3 and CsPbI 3 with multi-color luminescence feature were employed into n-ZnO/p-GaN nano-heterojunction LEDs. A thin polystyrene cover layer was intentionally inserted between CsPbBr 3 and CsPbI 3 to prevent the undesired halogen anion-exchange reaction. A color-tunable electroluminescence (EL) could be achieved by changing the molar ratio of these two types of perovskite QDs. By further optimizing the molar ratio between CsPbBr 3 and CsPbI 3 , that is, the evolution of the share of red, green and blue-violet luminescence in EL spectra, a stable white light emission was obtained. The current research not only achieves multi-color EL emissions in a three-dimensional nano-architecture, but also proposes an effective and clever strategy for preparing and developing single-chip white LEDs.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2021
·Vol. 18
·期 6
·2103528
·
IF 13.281
Bijiang Geng,Shuang Xu,Ping Li,Xiaokai Li,Fuling Fang,Dengyu Pan,Longxiang Shen
Sonodynamic therapy as a promising noninvasive modality is being developed for tumor therapy, but there is a lack of next-generation sonosensitizers that can generate full ROS at high yields and simultaneously deplete elevated levels of glutathione (GSH) in tumor cells. Semiconductor p-n junctions are engineered as high-efficacy sonosensitizers for sonodynamic tumor eradication using pyridine N-doped carbon dots (N-CDs) as a p -type semiconductor and oxygen-deficient TiO 2− x nanosheets as a n -type semiconductor. The rate constants of 1 O 2 and •OH generation by ultrasound-excited N-CD@TiO 2− x p-n junctions are 4.3 and 4.5 times higher than those of TiO 2 , respectively. A Z-scheme carrier migration mechanism in the p-n junction achieving the rapid spatial separation of the ultrasound-generated electron–hole pairs for enhanced full ROS production is proposed. GSH-cleavable, Pt-crosslinked, N-doped CD fluorescent probes to detect the presence of intracellular GSH are also constructed. A GSH-responsive, p-n junction platform (Pt/N-CD@TiO 2− x ) with integrated GSH detection, GSH depletion, and enhanced sonodynamic performance is then assembled. Malignant tumors are completely eradicated without relapse via intravenous administration of low-dose Pt/N-CD@TiO 2− x under ultrasound irradiation. This work substantiates the great potential of biocompatible, GSH-responsive p-n junctions as next-generation sonosensitizers via p-n junction-enhanced ROS generation and metal ion oxidation of intracellular GSH.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Haibang Zhang,Ning Zhang,Jianzong Man,Yehong Du,Jinlong Cui,Juncai Sun
For the development of sustainable crop-based energy materials, phosphorus and nitrogen binary doped porous C/SiO x composites (PN@C/SiO x ) have been fabricated using rice husks as the Si and C source and (NH 4 ) 3 PO 4 as the P and N source through a facile and environmentally friendly approach. The obtained PN@C/SiO x composites possess a hierarchical porous structure and SiO x particles are uniformly distributed in the P,N-doped C skeleton. The porous P,N-doped C skeleton not only facilitates the ion transport and penetration of electrolyte, but also alleviates the volume expansion and agglomeration of SiO x particles. The P and N co-doping can generate additional defective sites on the C matrix surface, which enhances electronic conductivity and energy storage performance. Due to the above advantages, the optimized PN@C/SiO x composite as anode of lithium-ion batteries (LIBs) presents an excellent reversible specific capacity of 1078 mAh/g at 0.1 A/g and improved initial coulombic efficiency (CE) of 73.6%. Even at 1.0 A/g, a steady specific capacity of 622 mAh/g still could be achieved after 1000 cycles. It is believed that this strategy has great potential in large-scale production of new energy materials for future practical applications.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yabin Wang,Jianghui Tao,Yanni Wang,Liangzhu Huang,Xiuping Ding
The aggregation and leaching of noble metal nanoparticles (NPs) in supported catalysts can decrease or even deactivate the catalytic activity. It is crucial but still challengeable to circumvent these drawbacks. Herein, we facilely synthesize a novel kind of composite nanocatalyst system to conquer these issues of palladium (Pd) NPs. To be specific, nanochannels of dendritic mesoporous silica&titania nanospheres (DMSTNs) could confine Pd NPs. Anatase titania (TiO 2 ) and the coupled mercapto groups (-SH) on the surface could remarkably disperse and robustly anchor Pd. The as-prepared DMSTNs-SH-Pd displays outstanding performance in p -nitrophenol reduction, where a synergistic effect of the chemical composition and surface functionality on the catalytic activity can be further confirmed by photocatalytic water splitting and Suzuki coupling reaction. The strategy for Pd NPs spatially confined in nanochannels and finely decorated on chemically functionalized supports might be versatile for other noble metals like gold (Au), platinum (Pt), etc .
✓ 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）