RSC Advances
·
2020
·Vol. 10
·期 68
·41551-41559
·
IF 3.119
Jinyan Du,Shuangqing Qi,Juan Chen,Ying Yang,Tingting Fan,Ping Zhang,Shujuan Zhuo,Changqing Zhu
Ce-Doped carbon dots (CeCDs) were fabricated via a one-step hydrothermal carbonization using Ce(NO3)3·6H2O and EDTA·2H2O as precursors, and various experimental techniques were employed to characterize the morphology, structure and composition of the as-obtained CeCDs. Using the disodium salt of bis(4-nitrophenyl)phosphate (BNPP) as a DNA model substrate, mimetic phosphatase activity toward phosphate ester hydrolysis cleavage was investigated. It was found that similar to the catalytic character of the natural enzyme, CeCDs as a hydrolase mimic can exhibit a good catalytic activity for promoting BNPP hydrolysis, in which metal Ce(III) acts as a center for binding and activation of the metal-bound hydroxide complex as well as a source of nucleophilic metal hydroxides. Additionally, based on the Inner Filter Effect (IFE), fluorescence spectra can be used to monitor the hydrolysis of BNPP using CeCDs, which mimic phosphatase. Thus, the unique properties of the CeCD mimetic phosphatases as well as the IFE sensing strategy would provide an ideal platform to monitor the catalytic phosphate ester hydrolysis processes. Finally, to validate the availability of the established catalytic systems, the CeCDs were further applied for degradation of organophosphorus pesticide chlorpyrifos. The degradation efficiency was estimated to be a satisfactory value of 74.50%, exhibiting a potential application prospect for treatment of the pollutants in the soil and water.
研究领域:
材料科学
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生物化学
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环境科学
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
·
IF 6.2
Shan-Peng Ma,Cong Wang,An-Zhen Chen,Xiu-Li Zhang,De-Peng Wang,Hong-Bing Liu
Glycerophospholipids (GPLs) are typical membrane lipids with important physiological and pharmacological functions, but little is known about their distribution characteristics in economic seaweeds. This study established a systematic evaluation method, including conventional 2D 1H–31P heteronuclear multiple bond correlation (HMBC) NMR for identifying GPLs and 1D 31P NMR for determining the contents, which were then applied to reveal subclasses characteristics of GPLs in 18 economic seaweeds in Asia. The results indicated that phosphatidylglycerol (PG) was the characteristic GPL subclass distributed in all of the 18 seaweeds (ranging from 0.08 to 1.75‰), generally with higher contents than that of known terrestrial plants. The characteristic chemical shifts of protons in the GPLs headgroup (H-1′) together with protons in the backbone (H-3) were summarized through 1H–31P HMBC spectrum, which were helpful in assigning GPL subclasses.
研究领域:
生物化学
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海洋生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOILS AND SEDIMENTS
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2024
·Vol. 24
·期 11
·3641-3655
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IF 2.8
Huang Haofeng,Lin Qintie,Liu Jiaxin,Wei Longyi,Liu Yuxin,Zheng Junli,Lei Haoxin,Chen Tingxi,Luo Hao
Purpose The purpose of the study is to develop remediation technology for soil with arsenic and lead composite pollution by leaching. Arsenate carries a negative charge in soil, while lead carries a positive charge in soil, causing soil remediation more challenging. There is an urgent need to develop a remediation method that can efficiently remove both arsenic and lead simultaneously. Methods A complex agent composed of potassium pyrophosphate (PP) and potassium hypophosphite (PHP) was applied to the Soil A (As soil samples) and B (As-Pb soil samples). The research methods identified the optimal condition of As and Pb removal efficiency by concentration, molar ratio, liquid‒solid ratio, washing time and pH. The mechanism of the experiment is studied through Wenzel/BCR method analysis, I R and M F analysis, leaching toxicity and soil physicochemical properties analysis. Results The results show that the removal of arsenic from Soil A and B was 71.53% and 68.27% by 0.5 mol·L −1 PP and 0.2 mol·L −1 PHP, L/S = 10:1(L/S is liquid–solid ratio, volume ratio of agent to soil), t = 10 h, pH = 5.0. The removal of Pb in Soil B reached 74.89% by 0.6 mol·L −1 PP and 0.3 mol·L −1 PHP, L/S = 15:1, t = 8 h, pH = 7.0. According to Wenzel method, the complex agent converts specific adsorption into nonspecific adsorption state of As by Fe–P complexes through complexation and reductive dissolution of iron oxide. In addition, PP increases the efficiency of lead leaching by preventing the formation of Ca 2 Pb 3 (PO 4 ) 3 Cl, and PHP promotes the reductive dissolution of galena (PbS). Conclusions The mechanism involves competitive adsorption, inner-sphere complexation, reduction dissolution and electron transfer. The effect of pH on removal efficiency was significant. The optimal removal pH for As is weakly acidic, while the Pb removal efficiency is optimized under neutral conditions. There is synergy between PP and PHP in regard to removal of As and Pb in soil.
研究领域:
环境科学
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土壤化学
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污染控制
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xuedong Wang,Han Huang,Yongxiu Li,Qingqing Jiang,Xiaole Han,Qin Li,Yi Liu,Juncheng Hu
To address the pressing challenges of energy shortages and environmental sustainability, photocatalytic water splitting for hydrogen production has emerged as a promising strategy for solar energy conversion. While semiconductor catalysts exhibit significant potential in photocatalysis, their practical applications are hindered by limitations such as inefficient charge separation and insufficient active sites. Designing and preparing efficient, non-precious co-catalysts is therefore essential. In this work, we synthesized cobalt phosphide with phosphorus vacancy defects (vp-CoP) hollow microsphere co-catalysts and loaded them with indium zinc sulfide (ZnIn 2 S 4 ) nanosheets to construct vp-CoP@ZnIn 2 S 4 (vp-CoP@ZIS) heterojunction photocatalysts. Under visible light irradiation, the vp-CoP@ZIS photocatalyst achieved a hydrogen production rate of 7.4 mmol g −1 h −1 , which was 7.6 times higher than that of pristine ZnIn 2 S 4 . This remarkable enhancement arises from the synergistic effects between vp-CoP and ZnIn 2 S 4 . Specifically, the introduction of single-atom phosphorus vacancies significantly improved electron transfer efficiency and promoted charge separation within the heterojunction. This innovative design and synthesis strategy underscores the potential of vp-CoP@ZIS as a robust photocatalyst for solar-driven hydrogen production, providing a sustainable pathway for efficient solar energy utilization.
研究领域:
材料科学
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能源化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 17
·6333-6340
·
IF 5.7
Ziguo He,Mukfung Yuen,Cheng Zhang,Jian Zhang,Zhicai Wang,Caibo Yue,Mingfu Ye,Kui Zhang
Coal-derived carbon dots inherit the rich functional groups of raw coal, which makes them easy to be modified, and have important applications in chemical analysis, biomedicine, optoelectronic devices and other fields due to their excellent properties. In this work, we achieved room-temperature phosphorescence (RTP) emission of coal-based humic acid-derived carbon dots (HACDs) in boric acid for the first time. The results show that the boron–carbon bonds are prone to generate between HACDs and boric acid under heating conditions. Besides, the surface of the prepared HACDs contains numerous phenolic hydroxyl groups, which are easily oxidized by hydrogen peroxide into carbonyl groups, improving the phosphorescence lifetime. The resultant RTP materials exhibit an ultra-long phosphorescence lifetime of 632.20 ms with an outstanding afterglow as long as 9.0 s, and the phosphorescence quantum yield is 7.6%. This work provides guidance for finding earth-abundant and cost-effective carbon sources and a novel means to modulate the emission mechanism of coal-derived carbon dots.
研究领域:
化学
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材料科学
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DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
·
IF 8
Jinpeng Wang,Yang Su,Xue Yang,Fengrong Xin,Jian Wang,Chaoyi Fan,Zhen Yang,Dandan Peng,Zhehong Shen,Qun Fang,Sai Wu
As a bio-based wood product, plywood is widely used in furniture, flooring, packaging, architectural decoration, etc. However, the flammability of plywood limits its application. Using flame-retardant adhesives to prepare plywood is the simplest way to improve its flame-retardant properties. However, a challenge in flame-retardant adhesives arose from the negative effect of flame retardants on the curing and bonding properties of adhesives. Herein, we developed a method to prepare a flame-retardant adhesive modified by using Z-3A molecular sieves as carriers to load flame retardants such as phytic acid and ammonium polyphosphate. The flame-retardant performance of obtained plywood bonded by this flame-retardant adhesive was significantly improved with robust bonding strength under extraordinarily low loading of flame retardants. Even if the loading rate of ZPA flame retardant for 2-ZPA-5 plywood was as low as 2.2 %, the total smoke production and the maximal peak value of the heat release rate were reduced by 79 % and 14 %, respectively, with the limiting oxygen index being 33.6 %, the time to ignition delaying by 14 s, robust wet bonding strength being 1.79 MPa, anti-loss rate as 1.06 ± 0.18 %, and moisture absorption rate as 4.45 ± 0.14 %. The whole process needs neither tedious work or equipment nor high loading of flame retardants. This judicious design strategy offers a versatile and scalable approach to preparing flame retardant plywood.
研究领域:
材料科学
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林业工程
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产品关联
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 1
·48-57
·
IF 4.6
Boxuan Li,Shaoxin Wen,Jiacheng Li,Dedong He,Yongming Luo,Xiangqian Zheng,Dingkai Chen
Polysilicate-ferric-calcium-lanthanum (PSFCL) was synthesized through a co-polymerization method in order to treat the yellow phosphorus wastewater. Its morphology, composition and functional group were analyzed by X-ray Diffraction (XRD), Fourier Transform-Infrared Spectroscopy (FTIR), Scanning Electron Microscopic (SEM) and X-ray Photoelectron Spectroscopy (XPS), respectively. The optimization of the flocculant was also investigated, including La/Si molar ratio, pH, agitation time, dosage and sedimentation time. Results showed that PSFCL has reached an excellent removal efficiency of 95% and 97% towards phosphorus and fluoride, respectively. It could be inferred that charge neutralization, bridging effect and ligand exchange were the main coagulation mechanisms. As a whole, after the introduction of lanthanum, PSFCL was found to be a promising flocculant in yellow phosphorus wastewater treatment owing to its high removal efficiency and simple synthesis route.
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
SCIENCE
·
2024
·
IF 44.7
Yi Lu,Chen-Xi Yue,Li Zhang,Deqiang Yao,Ying Xia,Qing Zhang,Xinchen Zhang,Shaobai Li,Yafeng Shen,Mi Cao,Chang-Run Guo,An Qin,Jie Zhao,Lu Zhou,Ye Yu,Yu Cao
Precise regulation of intracellular phosphate (Pi) is critical for cellular function, with XPR1 serving as the sole Pi exporter in humans. The mechanism of Pi efflux, activated by inositol pyrophosphates (PP-IPs), has remained unclear. This study presents cryo-electron microscopy structures of XPR1 in multiple conformations, revealing a transmembrane pathway for Pi export and a dual-binding activation pattern by PP-IPs. A canonical binding site is located at the dimeric interface of SPX domains, and a second site, biased toward PP-IPs, is found between the transmembrane and SPX domains. By integrating structural studies with electrophysiological analyses, we characterize XPR1 as an IPs/PP-IPs-activated phosphate channel. The interplay among its TMDs, SPX domains, and IPs/PP-IPs orchestrates the conformational transition between its closed and open states.
研究领域:
细胞生物学
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结构生物学
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分子生物学
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DOI
PubMed
高影响因子
Chemical Engineering Journal Advances
·
2021
·
IF 0
Bing Li,Qiang Xue,Yong Wan,Lin Liu,Junhua Fu,Yitao Yu,Feng Wang,Jinhui Li,Fangzhi Zhang,Shuo Zhang,Zhenhua Wang,Ning Zhao
Water deterioration and eutrophication caused by phosphorus (P) contamination necessitates P removal from polluted water, and has been a research focus since the second half of last century. In this study, novel mesoporous micropheres based on silicon and calcium (Ca) was prepared as an adsorbent by direct pyrolysis to enrich and remove P. The maximum adsorption capacities of the prepared adsorbents were 356.34 and 496.73 mg g −1 P−PO 4 3− for potassium phosphate (K 3 PO 4 ) and potassium dihydrogen phosphate (KH 2 PO 4 ) solutions, respectively, and adsorption equilibrium was attained rapidly in less than 30 min. The Langmuir isotherm and pseudo-second-order kinetic model adequately fit the adsorption process for K 3 PO 4 solution, while the Langmuir isotherm and pseudo-first-order kinetic appropriately fit the KH 2 PO 4 solution. The adsorption of P was due to the reaction between Ca 2+ and PO 4 3− , forming different phosphates. Addition of interfering ions had no significant effect on the adsorption ability of the prepared adsorbents. The proposed adsorbent was successfully applied to remove P from real wastewater. Notably, this new Ca-modified mesoporous silicon micropheres is an excellent adsorbent for treating wastewater containing low P content, providing an effective approach for facile preparation of P adsorbents and exhibiting promising P removal from wastewater.
研究领域:
环境科学
·
材料科学
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DOI
FOOD CHEMISTRY
·
2024
·
IF 8.5
Zhong Li,Huilin Zhou,Xuan Liu,Weifei Wang,Dongming Lan,Yonghua Wang
The limited availability of phospholipase A 1 (PLA 1 ) has posed significant challenges in enzymatic degumming. In this study, a novel PLA1 (UM2) was introduced to address this limitation, which had a unique thermo-responsive ability to switch phospholipase and lipase activities in response to temperature variations. Remarkably, UM2 displayed an unprecedented selectivity under optimized conditions, preferentially hydrolyzing phospholipids over triacylglycerols—a specificity superior to that of commercial PLA 1 . Moreover, UM2 demonstrated high efficiency in hydrolyzing phospholipids with a predilection for phosphatidylcholine (PC) and phosphatidylethanolamine (PE). A practical application of UM2 on crude flaxseed oil led to a dramatic reduction in phosphorus content, plummeting from an initial 384.06 mg/kg to 4.38 mg/kg. Broadening its industrial applicability, UM2 effectively performed enzymatic degumming for other distinct crude vegetable oils with a unique phospholipid composition. Collectively, these results highlighted the promising application of UM2 in the field of oil degumming.
研究领域:
生物化学
·
食品科学
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DOI
PubMed
高影响因子
Corrosion Communications
·
2025
·
IF 9.5
Chao Yang,Tao Ying,Aihui Huang,Jian Huang,Pinghu Chen,Paul K. Chu,Xiaoqin Zeng
Corrosion of aluminum (Al) alloys during service limits many applications. Micro-arc oxidation (MAO) coatings can enhance corrosion resistance, but porous defects in the films undermine their effectiveness. Here, by mixing a phosphate electrolyte with soluble Zn and Ce salts, zinc phosphate and cerium phosphate co-doped MAO corrosion-resistant coating is prepared on Al alloy LY12. Zinc phosphate and cerium phosphate are incorporated in situ to form an amorphous encapsulated nanocrystalline structure. During long-term corrosion, Zn 2+ is released and deposited as corrosion products Zn(OH) 2 to cover weak corrosion micro-regions in the coating. Simultaneously, Ce 3+ released from MAO coating co-doped with zinc phosphate/cerium phosphate forms Zn(OH) 2 /Ce(OH) 3 due to the small solubility product K sp to further enhance corrosion resistance. Compared to pristine Al alloy, corrosion potential increases from -1.306 to -0.819 V SCE , and corrosion current density decreases by 4 orders of magnitude from 2.6 × 10 −6 to 2.5 × 10 −10 A·cm −2 . Co-doped MAO coating significantly enhances corrosion resistance of Al alloy LY12 and shows great potential for a wide range of applications.
研究领域:
材料科学
·
表面工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Wubin Liao,Peng Liao,Zheng Wang,Chenggang Ci,Shiwei Xie
The dephosphorylation of N-containing phosphonates is crucial for mitigating their potential ecological risks and enabling phosphorus resource recovery. Here, we first show that the electrochlorination process outperforms other advanced oxidation methods in terms of conversion efficiency and rate constants for orthophosphate production. The high efficacy of electrochlorination process is primarily attributed to the generation of hypochlorous acid (HClO) under neutral pH conditions, as substantiated by a combination of speciation analysis, quantitative assessments, and quenching experiments. Furthermore, density functional theory (DFT) calculation and LC-MS measurements show that the degradation of nitrilotris-methylenephosphonic acid (NTMP) by HClO occurs spontaneously, with a preferential cleavage of the C P bond over the C N bond, thereby facilitating the efficiency of the dephosphorylation reaction. Altogether, our findings provide key insights into the role of reactive chlorine species in the degradation of N-containing phosphonates, offering valuable evidence for the development of next-generation, more effective phosphorus recovery strategies.
研究领域:
环境科学
·
化学工程
·
计算化学
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产品关联
DOI
高影响因子
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