ACS Applied Materials & Interfaces
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2021
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IF 9.229
Xingru Yan,Sai Che,Fan Yang,Zhusong Xu,Hongchen Liu,Chenxuan Li,Lu Yan,Na Ta,Siyuan Sun,Qiang Wei,Lei Fang,Yongfeng Li
A non-noble-metal hybrid catalyst (Ni2P/NPC-P), composed of N,P-doped porous carbon decorated with surface P-enriched Ni2P nanoparticles, is developed to address the urgent challenges associated with mass production of clean hydrogen fuel. The synthesis features one-pot pyrolysis of inexpensive fluid catalytic cracking slurry, graphitic carbon nitride, and inorganic salts, followed by a feasible surface phosphidation process. As a non-noble metal catalyst, Ni2P/NPC-P demonstrates excellent performance in hydrogen evolution reaction in alkaline electrolytes with a low overpotential of 73 mV at a current density of 10 mA cm–2 (η10) and a small Tafel slope of 56 mV dec–1, meanwhile exhibits durability with no significant η10 change after 2000 catalytic cycles. Theoretical calculation reveals that the negatively charged P-enriched surface accelerated the rate-determining transformation and desorption of OH*. In overall water splitting, the electrocatalyst achieves a low η10 of 1.633 V, promising its potential in the cost-effective mass production of hydrogen fuel.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
·
IF 14.229
Zizheng Ai,Yongliang Shao,Bin Chang,Lei Zhang,Jianxing Shen,Yongzhong Wu,Baibiao Huang,Xiaopeng Hao
As a metal-free polymeric semiconductor, graphitic carbon nitride (g-C 3 N 4 ) is a promising candidate for photocatalytic water splitting but suffers from the insufficient optical absorption and sluggish utilization of photocarriers. Herein, based on the energy band engineering theory, a new design philosophy of tunable p-n homojunction is proposed and realized in a novel P-doped g-C 3 N 4 (PCN) material. Through regulating the tendency of transformation in p-n homojunction, a strong internal electric field is built and integrated with two secondary internal electric fields by further decorating with Ti 3 C 2 , leading to the formation of a triple-internal electric field system. Thus the spatial separation efficiency of photocarriers is improved and their lifetime is prolonged. The specific photocatalyst exhibits excellent overall water splitting performance in pure water with a notable quantum yield. This work presents a peculiar concept of adjustable p-n homojunction and holds great significance for the rational design of advanced photocatalyst in water splitting.
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高影响因子
ENVIRONMENT INTERNATIONAL
·
2019
·
IF 7.943
Jing Zhan,Yiran Liang,Donghui Liu,Xiaoran Ma,Peize Li,Wangjing Zhai,Zhiqiang Zhou,Peng Wang
Background The prevalence of obesity has raised global concerns. Environmental pollutants are one of the main causes of obesity. Many studies have demonstrated that dietary fiber could reduce obesity induced by high-fat diets, but whether environmental pollutant-induced obesity can be reversed is still unknown. Objectives This study aimed to investigate the effects of pectin on obesity induced by a typical environmental pollutant p,p'-dichlorodiphenyldichloroethylene (p,p′-DDE) and explore the underlying mechanism by which pectin reversed p,p′-DDE-induced obesity. Methods p,p′-DDE was used to induce obesity in C57BL/6J mice and pectin was supplied during and after cessation of p,p'-DDE exposure. Body and fat weight gain, plasma lipid profile and insulin resistance of mice were assessed. Gut microbiota composition and the levels of short-chain fatty acids (SCFAs) as well as the receptor proteins and hormones in the SCFAs-related signaling pathway were analyzed. Moreover, p,p′-DDE levels in various tissues of mice were detected. Results Pectin supplementation reversed body and fat weight gain, dyslipidemia, hyperglycemia and insulin resistance in p,p′-DDE-exposed mice. Furthermore, pectin apparently altered the p,p′-DDE-induced microbial composition and then promoted the levels of SCFAs in colonic feces as well as the expression of G-protein coupled receptors and the concentration of hormone peptide YY (PYY) and glucagon like peptide-1 (GLP-1). Pectin treatment also significantly reduced p,p′-DDE accumulation in mice tissues during p,p′-DDE exposure but did not change p,p′-DDE metabolism after termination of p,p′-DDE exposure. Conclusions Pectin had a good effect on reducing p,p′-DDE-induced obesity through regulating gut microbiota and provided a potential strategy for the treatment of environmental pollutant-caused health problems.
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ACS Sustainable Chemistry & Engineering
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2018
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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
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2024
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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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高影响因子
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
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2021
·Vol. 11
·期 1
·1-8
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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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高影响因子
IEEE SENSORS JOURNAL
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2024
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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 COLLOID AND INTERFACE SCIENCE
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2011
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IF 3.068
Wenhui Xiong,Jian Peng,Yongfeng Hu
This paper presents a novel technique integrating bulk-sensitive and surface-sensitive XANES methods to distinguish between physisorption and chemisorption for phosphate adsorption onto ferrihydrite-modified diatomite (FHMD). XANES P K-edge, L-edge, and Fe M-edge spectra were obtained for reference samples (K 2 HPO 4 and FePO 4 ·2H 2 O) and test samples (phosphate adsorbed onto FHMD (FHMD-Ps) and Si-containing ferrihydrite (FHYD-Ps)). A resolvable pre-edge peak in the P K-edge spectra of FHMD-Ps and FHYD-Ps provided direct evidence for the formation of P–O–Fe(III) coordination and the occurrence of chemisorption. The resemblance between the P L-edge spectra of K 2 HPO 4 and FHMD-Ps and the marked difference between the spectra of FHMD-Ps and FePO 4 ·2H 2 O indicated the intact existence of the adsorbate and the adsorbent. The similarity between Fe M-edge spectra of FHMD and FHMD-Ps and the difference between the spectra of FHMD-Ps and FePO 4 ·2H 2 O confirmed the findings from P L-edge analyses. Therefore, chemisorption and physisorption coexisted during phosphate adsorption onto FHMD. Phosphate chemisorption occurred in the deeper zone of FHMD (from 50 nm to 5 μm); whereas physisorption occurred in the zone of FHMD shallower than 50 nm since the probing depth of XANES P K-edge method is 5 μm and that of P L-edge and Fe M-edge methods is 50 nm.
研究领域:
环境化学
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材料科学
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表面科学
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吸附
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光谱学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2010
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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
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2021
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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
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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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