ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Jiajia Feng,Dingke Zhang,Hongpeng Zhou,Mingyu Pi,Xiaodeng Wang,Shijian Chen
Fabricating heterostructures to promote the charge separation and doping heteroatom to modulate the band gap of the photocatalysts have been regarded as effective strategies to improve the photocatalytic performance. However, it is still an unresolved issue of doping element and fabricating heterostructures with good contact at the same time. In this study, P nanostructures/P doped graphitic carbon nitride composites (P@P-g-C3N4) were successfully composited by a solid reaction route. Various structural characterizations, including X-ray adsorption near edge structure, indicate that P has been doped into g-C3N4 and P nanostructures were directly grown on g-C3N4 to form heterostructures. As expected, the intimate contacted heterostructured composites exhibit much enhanced light absorption and high-efficiency transfer and separation of photogenerated electron–hole pairs, and consequently, the composites also possess the superior photocatalytic performance in the rapidly degrading RhB and an efficient H2 production rate of 941.80 μmolh–1g–1. Systematical studies combining experimental measurements with theoretical calculations were carried out to expound the underlying reasons behind the distinct performance. This study pave a one-step way to synthesize earth abundant element C, N, and P as novel photocatalysts for photochemical applications.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xinya Luo,Anran Zhang,Lihua Wu,Yunzhi Fu
Green synthesis of multifunctional nanocatalysts has been a focal point in scientific research. In this work, we investigated the eco-friendly synthesis of gold nanoparticles (AuNPs) using Gracilaria lemaneiformis biomolecule extract (Gbe) and explored their application potential in colorimetric sensing and catalysis. Gbe contains a significant number of oxygen-functional groups with reducing properties, enabling the reduction of Au 3+ to Au 0 , leading to the formation of uniform nanoparticles . Simultaneously, Gbe can establish hydrogen-bond interactions with p-phenylenediamine (p-PD), allowing Gbe-modified AuNPs to detect p-PD using a colorimetric approach (the detection limit was 0.039 μM). Furthermore, quantitative analysis of p-PD can be performed by measuring Red-Green-Blue (RGB) values with a smartphone equipped with the Color Picker app, offering a reliable and straightforward real-time analytical method. Additionally, the synthesized small-sized AuNPs demonstrate superior catalytic activity in the conversion of p-nitrophenol (p-NP) to p-aminophenol (p-AP) ( k = 0.6 min −1 ). Theoretical calculations were conducted to elucidate the reduction mechanism of p-NP. This study highlights the intrinsic potential of algae as a bioresource for synthesizing multifunctional AuNPs in an eco-friendly manner, providing a potentially economical solution for achieving efficient pollutant detection and environmental remediation.
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Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 6
·2950-2955
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IF 5.503
Ziqiang Wang,Hugang Zhang,Shuli Yin,Songliang Liu,Zechuan Dai,You Xu,Xiaonian Li,Liang Wang,Hongjing Wang
The design of active and stable electrocatalysts for the methanol oxidation reaction (MOR) plays a vital role in the large-scale commercialization of direct methanol fuel cells. Herein, one-dimensional P-doped PtTe nanotubes with uniform mesoporous shells (P-PtTe MNTs) have been synthesized using F127 and Te nanowires as the dual template and trioctylphosphine as the phosphorus dopant. The resultant P-PtTe MNTs with sufficient exposed surface atoms can improve the atom utilization of Pt. Moreover, the incorporation of P atoms into Pt lattices can tailor the electronic structure of Pt and induce a strong synergic effect, thus leading to highly active and durable performance for the MOR. This phosphorus doping is very valuable for controllable synthesis of various metal–nonmetal catalysts with desired morphologies.
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AMB Express
·
2021
·Vol. 11
·期 1
·1-8
·
IF 3.298
Xu Jing,Wang Bo,Zhang Wen-hui,Zhang Fu-Jian,Deng Yong-dong,Wang Yu,Gao Jian-Jie,Tian Yong-Sheng,Peng Ri-He,Yao Quan-Hong
p-Nitrophenol (PNP) is an important environmental pollutant and can causes significant environmental and health risks. Compared with the traditional methods, biodegradation is a useful one to completely remove the harmful pollutants from the environment. Here, an engineered strain was first constructed by introducing PNP biodegradation pathway via the hydroquinone (HQ) pathway into Escherichia coli. In the engineered strain BL-PNP, PNP was completely degraded to β-ketoadipate and subsequently enter the metabolites of multiple anabolic pathways. The high tolerance and rapid degradation ability to PNP enable the engineered strain to have the potential to degrade toxic substances. The engineered strain created in this study can be used as a functional strain for bioremediation of PNP and potential toxic intermediates, and the method of assembling aromatic hydrocarbons metabolic pathway can be used to eradicate nitroaromatic pollutants in the environment.
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PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2024
·
IF 4.3
Cuixia Guo,Zhijie Pan,Zeyu Huang,Zhanghuang Zou,Feng Huang
The precise biomolecular detection is crucial in medical diagnosis, biological research, and bioengineering. In this paper, a phase multiplexing based molecularly imprinted polymer biosensor (PM-MIPB) is proposed. It considers the high throughput and non-labeling detection mode by multiplexing without increasing the number of scanning and detecting elements, as well as the high specificity and affinity of molecular imprinting technology, to improve the throughput and accuracy of molecular detection. Phase multiplexing originates from phase-sensitive spectral-domain optical coherence tomography, where the low-coherence interferometric spectra with multiple optical path differences are spectrally analyzed to identify and extract the interferometric phases across these paths. Based on this principle, simultaneous quantitative detection and interaction analysis of multiple analytes can be realized by preparing multiple optical-path difference-encoded (also thickness-encoded) detection channels and simultaneously extracting the phases of the interfering signals. Furthermore, PM-MIPB utilizes molecularly imprinted polymer as an alternative to antigen-antibody systems, creating selective recognition sites through specific template molecules to achieve highly selective, specific and stable detection of target molecules. Theoretically, PM-MIPB can simultaneously measure up to 255 biomolecules, with a detection speed of 0.025 seconds, recovery rate ranging from 95.65% to 103.41%, and sensitivity of 4.05×10
-3
nm·mL/μg. By integrating phase multiplexing with molecular imprinting, PM-MIPB meets the high demand for efficient, high-throughput, and accurate biomolecular detection in life science field.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Wenqiang Ai,Jinnuo Yang,Jiahui Lv,Ya'nan Zheng,Ruiqi Wang,Yang Liu,Lei Zu,Huiqin Lian
Sodium-ion batteries (SIBs) attract significant interest due to the abundance and affordability of sodium resources, alongside their environmentally sustainable profile. Nevertheless, further research is required to improve high-rate performance and long-term cycling stability. Black phosphorus (BP), with its high theoretical specific capacity, and MXenes, known for their excellent electrical conductivity and multiple functional groups, are both promising anode candidates for SIBs. To address these challenges, a composite anode of BP/Ti 3 C 2 T X MXene/carbon nanotubes (CNTs) (BMC) containing phosphorus-oxygen-titanium (P-O-Ti) bonds is prepared through a straightforward two-step ball milling process. The microstructure and bonding conformation of the BMC composite material are studied using a variety of characterization methods. Compared to the BP/CNTs (BC) anode, the BMC anode demonstrates superior cycling stability and high-rate performance. Kinetic analysis further reveals favorable electrochemical performance. The P-O-Ti bonds in BMC significantly enhance SIBs performance by stabilizing the BP-based composite structure. As a result, the reversible specific capacity of BMC anode reaches 630.7 mAh g −1 after 1400 cycles at 2.0 A g −1 . Furthermore, the reversible specific capacity remains stable at 281.1 mAh g −1 even after 1000 cycles at 10.0 A g −1 . This work presents a straightforward method for preparing BMC anodes.
研究领域:
材料科学
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电化学
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PHARMACEUTICAL BIOLOGY
·
2022
·
IF 3.889
Zhongmei He,He Yu,Hong Wu,Lili Su,Kun Shi,Yan Zhao,Ying Zong,Weijia Chen,Rui Du
Context Fibraurea recisa Pierre. (Menispermaceae) (FR) is a traditional Chinese medicine known as “Huangteng.” The total alkaloids of FR (AFR) are the main active ingredients. However, the pharmacological effects of AFR in the treatment of depression have not been reported.Objectives This study investigates the antidepressant effects of AFR by network pharmacology and verification experiments.Materials and methods Compound-Target-Pathway (C-P-T) network of FR and depression was constructed through network pharmacology. In vitro, HT-22 cells were treated with corticosterone (CORT) solution (0.35 mg/mL), then AFR (0.05 mg/mL) solution and inhibitor AZD6244 (14 μM/mL) or BAY11-7082 (10 μM/mL) were added, respectively. The cell viability was detected by CCK-8. In vivo, C57BL/6 mice were divided into 5 groups, namely the normal group, the CUMS group, the AFR (400 mg/kg) group, and the 2 groups that were simultaneously administered the inhibitory group AZD6244 (8 mg/kg) and BAY11-7082 (5 mg/kg). Western blotting was used to assess the expression level of the proteins.Results AFR could protect HT-22 cells from CORT-induced damage and increase the cell viability from 49.12 ± 3.4% to 87.26 ± 1.5%. Moreover, AFR significantly increased the levels of BDNF (1.3, 1.4-fold), p-ERK (1.4, 1.2-fold) and p-CERB (1.6, 1.3-fold), and decreased the levels of NLRP3 (11.3%, 31.6%), ASC (19.2%, 34.2%) and caspase-1 (18.0%, 27.6%) in HT-22 cells and the hippocampus, respectively.Discussion and conclusions AFR can improve depressive-like behaviours and can develop drugs for depression treatment. Further studies are needed to validate its potential in clinical medicine.
研究领域:
药理学
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神经科学
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中医药
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PubMed
高影响因子
Science Advances
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2024
·Vol. 10
·期 13
·
IF 11.7
Shun Hu,Liding Zhang,Ying Su,Xiaohan Liang,Jie Yang,Qingming Luo,Haiming Luo
Blood exosomes are emerging as potential biomarkers for diagnosing brain diseases such as Alzheimer’s disease (AD). There is currently a lack of an ultrasensitive technology for identifying core AD biomarkers in blood exosomes to optimize the utility of biomarkers in clinical practice. Here, an immunomagnetic exosomal polymerase chain reaction (iMEP) platform was developed using DNA-conjugated antibodies for the rapid detection of amyloid-β (Aβ1–40 and Aβ1–42) and phosphorylated tau (p-tau396,404 and p-tau181) in clinical blood exosomes. The toehold shift–mediated DNA affinity pulldown eliminates the high detection background, which allows the detection of biomarkers at concentrations down to 10 femtograms per milliliter. With the iMEP assay, exosomal Aβ1–42 was more accurate in differentiating patients with AD from healthy individuals compared with exosomal p-tau181 and p-tau396,404, with a sensitivity of 95.0% and a specificity of 95.0%. The iMEP technique is also adept at quantifying the levels of different exosomal biomarkers associated with disease pathogenesis.
研究领域:
神经科学
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分子生物学
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临床诊断
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生物标志物研究
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2010
·
IF 3.019
Xiaoya Liu,Chenglin Yi,Ye Zhu,Yiqun Yang,Jinqiang Jiang,Zhenggang Cui,Ming Jiang
A new type of copolymer containing two alternating segments, poly-(styrene- alt -maleic anhydride)- co -poly (7-(4-vinylbenzyloxyl)-4-methylcoumarin- alt -maleic anhydride) P(St- alt -MAn)-co-P(VM- alt -MAn)(PSMVM), was prepared. The copolymer self-assembled into nanoparticles with internal microphase structures in water because the hydrophilicity of segment P(VM- alt -MAn) is higher than that of P(St- alt -MAn). The particle size, morphology, ζ potential and surface properties and their dependence on the pH and slat concentrations were studied with a combination of techniques. The nanoparticles of PSMVM showed surface activity and pH sensitivity for producing Pickering oil-in-water emulsions. The emulsion volume increased and the size of oil/water droplet decreased with increasing salt concentration. Furthermore, cross-linked nanoparticles (CLPs) were obtained by photo-dimerization of the pendent coumarin groups in PSMVM under UV irradiation. The emulsions produced by using the CLPs as emulsifiers showed even better stability upon standing. Solid oil-phase droplets were obtained by preparation of CLPs-stabilized Pickering emulsions with an oil phase of styrene containing the initiator AIBN followed by the polymerization of styrene. Thus, the enrichment and aggregation of the CLPs on the emulsion droplets was visible because the solid droplets remained unchanged during the SEM sample preparation.
研究领域:
材料科学
·
化学工程
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PeerJ
·
2021
·
IF 2.984
Jawad Ali Shah,Guixin Chu
Short-chain polyphosphate fertilizers have been increasingly applied in agriculture, but little is known about the chemical behaviors of polyphosphate in soils. Herein, a cylinder experiment was carried out to investigate the influences of different P types (i.e., mono-ammonium phosphate (MAP), phosphoric acid (PA) and ammonium polyphosphate (poly-P)) and their application methods (single vs split) on the mobility and availability of P in soil through a column millimeter-scale slice cutting method; meanwhile a soil microcosm experiment (560-day) was conducted to investigate the effects of different P types on phosphorus dynamic transformation. Polyphosphate addition significantly increased P mobility. The average distance of P downward movement (81.5 mm) in soil profile in the poly-P application treatment increased by 33.6% and 81.1%, respectively, compared to the MAP and PA treatments. Different P application methods also markedly influenced phosphorus mobility. For instance, the average distance of P vertical movement in the split P application treatment was 21.2% higher than in the single application treatment, indicating that split P addition significantly increased P downward movement. Moreover, polyphosphate application decreased soil P fixation by blocking the transformation of the applied-P from labile to recalcitrant forms (HCl-P and residual-P). Overall, our findings provide meaningful information to current phosphorus fertilization practice in increasing soil P mobility and bioavailability. We suggest that polyphosphate could be regarded as an alternative P source used in agriculture, and split polyphosphate application is recommended as an effective P fertilization strategy.
研究领域:
土壤学
·
农业科学
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InfoMat
·
2019
·Vol. 1
·期 4
·542-551
·
IF 0
Yong Zhang,Xiaojie Xu,Xiaosheng Fang
The heterojunction photodetector between n-SrTiO 3 (n-STO) and p-CuS-ZnS (p-CZS) is prepared by a simple chemical bath deposition. The p-CZS/n-STO photodetector exhibits excellent self-powered characteristics under 390-nm light illumination, including high photosensitivity (on/off ratio of 300), fast response speed (0.7/94.6 ms), and good wavelength selectivity (410-380 nm). More importantly, the self-powered n-STO photodetectors can be regulated by varying the composition of CZS film (p-CZS, p-CuS, and n-ZnS). All devices exhibit a large open-circuit voltage and show different self-powered behaviors because of the different built-in electric fields. The open-circuit voltages of the CZS/STO, CuS/STO, and ZnS/STO devices are measured to be 0.56, 0.30, and 0.35 V, respectively. This work provides a simple and effective way to fabricate tunable self-powered photodetectors by varying the composition of the nanocomposite film.
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NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 23
·11389-11397
·
IF 3.925
Baoli Wang,Yuhao Huang,Yijing Ai,Yucen Yao,Fan Shi,Shiguan Xu,Zejun Zhang,Xianghui Wang,Wei Sun
Developing non-noble and high-performance electrocatalysts towards the hydrogen evolution reaction (HER) in both acidic and alkaline media remains a stern challenge. Herein, the composite of P-doped Mo2C and a hierarchically ultrathin N, P-doped carbon nanoribbon network (P-Mo2C/NPC) is proposed through a facile simultaneous phosphating-carbonization strategy, in which biomass and phosphomolybdic acid (PMA) were employed as the carbon precursor and metal precursor, respectively. The doping of the electronegative P heteroatom increases the active sites, weakens the Mo–H bond strength in the HER, and facilitates the electron transfer. Consequently, the synthesized catalyst exhibits good intrinsic activity towards the HER, and shows low overpotentials of 172 mV and 118 mV to afford the current density of 10 mA cm−2 in 0.5 M H2SO4 and 1.0 M KOH electrolyte, respectively. Furthermore, the synthesized catalyst can sustain 24 h with stable performance, which is greatly favorable for industrial applications. This work may shed some light on the rational design and manufacture of HER electrocatalysts with high compatibility to different electrolytic environments.
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