CHEMICAL ENGINEERING SCIENCE
·
2022
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IF 4.889
Lele Yang,Hong Chen,Yuntao Xu,Rong Qian,Qiao Chen,Yuanxing Fang
The efficiency of hydrogen peroxide evolution reaction (H 2 O 2 ER) by photoanodic water oxidation is normally limited by low yield and poor selectivity. In this work, the surfaces of Mo doped BiVO 4 are modified by Co 2+ and PO 4 3- ions (CPMB), which has been used as the photoanode with improved H 2 O 2 yield and selectivity. The optimal evolution rate of the CPMB is ca. 0.23 µmol·min −1 ·cm −2 , corresponding to 2.5 times to the pristine BiVO 4 photoanode, and the faradaic efficiency of CPMB photoanode for H 2 O 2 ER is ca. 26%. In this study, the mechanism for the improved H 2 O 2 evolution performance of CPMB has been investigated, indicating that PO 4 3- ions mainly promote the formation of the •OH by dissociation of H 2 O, while Co 2+ ions accelerate the conversion of the •OH for the subsequent H 2 O 2 evolution. This study offers the strategy for designing an efficient photoelectrochemical system with optimized solar conversion efficiency for H 2 O 2 production.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
ACS ES&T Water
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2025
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IF 4.3
Yu Zhang,Yuan Zhuang,Yuhao Liu,Baoyou Shi
In the drinking water pipeline, PO43– and iron particles will inevitably coexist, but their effects on water quality are not fully clear. Here, PO43– was shown to inhibit the formation of disinfection byproducts (DBPs) in ductile cast iron pipe (decreases of 8.7%–29.8%). The inhibition effects were proved to be related to particle structure changes induced by PO43–. The PO43– influenced particles had lower roughness, smaller particle size, and a larger amount of negative charge. In the beaker without iron, the concentration of PO43– remained nearly consistent with the initial concentration, oscillating around 1.5 mg/L, whereas the PO43– concentration in the group containing Fe(II) exhibited a notable decline, reaching 1.28 mg/L. Thus, PO43– did not play a direct role in the formation of DBPs, but modulated the physicochemical behavior of water and the characteristics of particles. Therefore, when iron corrosion occurs in drinking water distribution systems (DWDSs), PO43– has the ability to inhibit the formation of DBPs, but other water quality issues should be considered at the same time. This study not only explains how PO43– affects the formation of DBPs in DWDSs, but also provides new thinking on how to control the risk of DBP exposure in DWDSs, which is worthy of further research.
研究领域:
环境科学
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水处理工程
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
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2024
·
IF 6.2
Yahao Geng,Shan Zhang,Yuying Wang,Shuochao You,Jing Cui,Guiyong Xiao
Hydroxyapatite (HAP), as an inorganic material with the biocompatible and bioactive, widely exists in hard tissues such as teeth and bones of mammals. However, the inherent brittleness of traditional HAP severely limits its clinical applications in load-bearing. HAP ultralong nanofibers with good flexibility can overcome this problem due to their high aspect ratio. In this work, the highly ordered HAP nanofibers are successfully synthesized by the calcium oleate precursor solvothermal method. The effects of ratio of PO 4 3− and CO 3 2− on the microstructure, orientation degree, and properties are researched. The results show that the arrangement of HAP nanofibers first changes from loose state to ordered dense structure, then to ordered loose form, and finally to disordered nanofibers with the increase of the PO 4 3− /CO 3 2− ratio. Meanwhile, the chemical composition, crystallinity, and thermal stability also change because of various PO 4 3− /CO 3 2− . In addition, the formation mechanism of highly ordered HAP nanofibers is explored as well in this work. Besides, the HAP ultralong nanofibers prepared by solvothermal method can be designed into advanced functional materials with highly ordered structures, which is expected to overcome the limitation of its difficult application in the load-bearing field.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
ENERGY & FUELS
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2024
·
IF 5.2
Mingzhu Ni,Qiuying Xia,Jiaxin Liu,Xiaohui Zhu,Hui Xia
Spinel LiMn2O4 cathode possesses open three-dimensional ion transport channels, high safety, and abundant resources, making it a promising candidate for high-power lithium-ion batteries. However, spinel LiMn2O4 inevitably faces serious challenges of manganese dissolution and irreversible phase transitions during the electrochemical process, leading to rapid capacity decay and limiting its rate performance. Herein, we report a simple two-step solid-state sintering method to realize Li+ and PO43– codoping synergy in spinel LiMn2O4. It is found that PO43– doping not only expands the lattice parameters of the material, enhancing its charge-transfer kinetics but also increases the relative content of active Mn3+, improving the specific capacity of spinel LiMn2O4. Meanwhile, Li+ doping effectively enhances the stability of the spinel structure, and the irreversible phase transition from cubic phase to tetragonal phase could be effectively suppressed in spinel LiMn2O4. Consequently, benefiting from the synergistic effect of Li+ and PO43– codoping, the optimally codoped spinel LiMn2O4 electrode delivers high specific discharge capacities of 116 and 102 mA h g–1 at 1 and 20C, respectively, and achieves 78.1% capacity retention after 1000 cycles at 5C. This strategy provides an effective modification approach to developing advanced electrode materials for lithium-ion batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2023
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IF 4.5
Qiushuang Li,Bing Zhao,Xiangdong Kong,Liyan Wang,Wei Kan,Bo Song,Rui Yu,Pengfei Zhang
Designation and application of the luminescent COFs remains a tough challenge and imperative task because of their limited building block structure, the unavailable raw material, the tedious modification process, or the onefold sensing function. Herein, a fluorinated fluorescent covalent organic framework containing a phenanthro[9,10- d ]imidazole moiety [TFPB-PI(F)–COF] had been successfully designed for Cu 2+ and Al 3+ detection relayed by PO 4 3− . TFPB-PI(F)–COF serves as a highly sensing platform with the superior selectivity toward Cu 2+ and Al 3+ based on the coordination interaction and the chelation enhancement quenching (CHEQ) effect, and the detection limits are 2.3 and 4.2 n mol L −1 , respectively. Subsequently, accompanied with the gradual introduction of PO 4 3− , TFPB-PI(F)–COF@M (Cu 2+ and Al 3+ ) complex is wrecked due to electrostatic attraction with the detection limit of 10 n mol L −1 , led to the fluorescent recovery of TFPB-PI(F)–COF. Furthermore, the reversible fluorescent performance by the mode of “on–off–on” is perfect. Besides, the established relayed method can be successfully employed for the analysis of Cu 2+ and Al 3+ in environmental water samples with recoveries of 96.00–104.63 % and RSD <4.62 %. Moreover, the fluorescent images for the visual detection of Cu 2+ is also fabricated in living HeLa cells, which provides a modest contribution and an effective platform to the biological analysis.
研究领域:
化学传感器
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材料科学
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生物分析
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DOI
高影响因子
MICROCHIMICA ACTA
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2024
·Vol. 192
·期 1
·1-12
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IF 5.3
Liu Xiang,Li Huijun,Sun Junjun,Shi Jianchao,Xu Zhouqing,Wang Yan
A HPU-23@Ru@Tb-NH 2 sensor array with light-driven oxidase-mimicking activity and triple-emission fluorescence was developed. It was composed of a Tb 3+ -functionalized metal organic framework and Ru(bpy) 3 2+ and applied to the simultaneous detection of Hg 2+ , ClO − , and PO 4 3− via differently responsive channels. HPU-23@Ru@Tb-NH 2 had a photoresponsive colorimetric response toward Hg 2+ with a LOD as low as 4.18 nM. In addition, the three emissions of the HPU-23@Ru@Tb-NH 2 sensor array were influenced by ClO − and PO 4 3− to varying degrees, causing remarkably distinguishable responses for the fluorescence channels to discriminate ClO − and PO 4 3− from each other. The detection limits of ClO − and PO 4 3− were 12.26 µM and 0.197 nM, respectively. Therefore, this work demonstrates the feasibility of multi-emission and multi-mode sensing platform, which is able to combine the advantages of different strategies for solving the problems of various toxic substances coexisting in the environment while meeting the needs of accurate and precise results and no side interferences. Graphical
研究领域:
分析化学
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环境科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
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2024
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IF 5.5
Yuanjia Ma,Xiao Yang
This work focuses on the electrochemical reduction behavior of PO 4 3– ions in molten CaCl 2 at 1123 K, aiming to develop a next-generation process for producing white phosphorus (P 4 ) through electrolysis of dissolved PO 4 3– . Results from cyclic voltammetry indicate a shift for the electrochemical reduction of PO 4 3– from a reversible reaction to a quasi-reversible one as the potential scan rate increases. The detachment rate of P 4 gas was found to be higher at the graphite electrode compared to Mo and W electrodes. The apparent diffusion coefficient of PO 4 3– , determined from chronoamperometry and chronopotentiometry at a graphite electrode, ranges from 1.43 to 2.26 × 10 –4 cm 2 s –1 . Additionally, an increase in the concentration of O 2– was found to decrease the detachment rate of P 4 gas, likely due to changes in the melt's physical properties. However, the increase in O 2– up to 0.30 mol% does not significantly affect the diffusion of PO 4 3– . This study provides valuable insights into the electrochemistry of PO 4 3– in molten CaCl 2 and offers a theoretical guidance for the technology development of P 4 production through electrolysis.
研究领域:
电化学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
TALANTA
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2012
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IF 3.794
Guangke He,Liang Zhao,Kai Chen,Yuanyuan Liu,Hongjun Zhu
A rapid, simple and real-time colorimetric assay for detecting phosphate anions (PO 4 3− ) in aqueous solution was developed. The method was based on a novel functionalized gold nanoparticles (MPTP-Zn-AuNPs), which was synthesized by the ligand-exchange reaction of 4′-(4-mercaptophenyl)-2,2′:6′,2″-terpyridine zinc(II) complex (MPTP-Zn) with citrate-stabilized aqueous AuNPs. The strong coordination between MPTP-Zn-AuNPs and PO 4 3− anion gave rise to a color change from wine-red to blue-gray that was discernible by the naked eye and an easily measurable alteration in the absorption spectrum of the particles in aqueous solution. And the new technique exhibited the high selectivity for PO 4 3− over 11 other anions and could be used to determine PO 4 3− with a detection limit of 11 ppm.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Chao Guo,Lina Chen,Rui Yao,Jinping Li,Guang Liu
Lewis-basic PO 4 3− regulates interfacial water on CoWO 4 for neutral OER. • PO 4 3− -CoWO 4 reaches 330 mV at 10 mA cm −2 and operates stably for 250 h. • PO 4 3− increases interfacial free water and promotes water dissociation. • Enhanced surface *OH coverage accelerates neutral OER kinetics. • PO 4 3− suppresses Co/W leaching and improves catalyst stability. In neutral water electrolysis, the intrinsically low OH − concentration compels the oxygen evolution reaction (OER) to proceed via an additional water dissociation step, leading to sluggish kinetics and high overpotential, which poses a challenge for efficient catalyst design. Introducing Lewis base sites on the catalyst surface can act as proton acceptors, accelerating H OH bond cleavage and thereby promoting the generation and accumulation of *OH. Herein, we incorporated the Lewis base PO 4 3− into CoWO 4 to construct a self-supporting PO 4 3− -CoWO 4 electrode. The incorporated PO 4 3− engages in electronic interactions with Co/W active sites, modulating the local electronic structure. Electrochemical tests demonstrate that PO 4 3− -CoWO 4 exhibits outstanding OER performance in 1 M phosphate buffer solution (PBS), achieving an overpotential of only 330 mV at 10 mA cm −2 and stable operation over 250 h. Mechanistic studies reveal that PO 4 3− optimizes the interfacial water on CoWO 4 , increases the fraction of free water, facilitates water dissociation, and enhances the surface *OH coverage. Moreover, it effectively suppresses the leaching of active Co/W species during OER, thereby improving the structural stability of the catalyst. This interfacial regulation by PO 4 3− synergistically boosts the activity and stability of neutral OER, providing new insights for designing highly efficient neutral water electrolysis catalysts. Lewis base PO 4 3− accelerates water dissociation on CoWO 4 , enabling neutral OER with an overpotential of 330 mV and 250 h durability. Download: Download high-res image (154KB) Download: Download full-size image
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高影响因子
TETRAHEDRON
·
2017
·
IF 2.651
Renjie Liu,Xu Tang,Yun Wang,Juan Han,Huiqin Zhang,Chen Li,Wenli Zhang,Liang Ni,Haoran Li
A novel fluorescent probe XDS based on 4-methylumbelliferone and 2-picolylamine platforms has been designed and synthesized, which behaves fast relay recognition of Fe 3+ and PO 4 3− via a fluorescence “on−off−on” response signal. Probe XDS exhibited very high sensitivity and unique selectivity for Fe 3+ over other common metal ions , and the detection limit of was 3.2 × 10 −7 M. Moreover, the addition of the PO 4 3− ions could cause the recovery of fluorescence. This relay recognition feature of probe XDS has potential applications in the determination of trace amount of Fe 3+ and PO 4 3− in environmental systems. Interestingly, fluorescence imaging experiments demonstrated that the probe XDS can also be used to monitoring the intracellular Fe 3+ in RAMOS cells.
研究领域:
分析化学
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生物医学
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环境科学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2018
·
IF 2.88
Qingming Wang,Yingzi Tan,Nianhua Wang,Zhixiang Lu,Wenling Wang
A fluorescence probe based on thiosemicarbazide has been synthesized and well characterized by 1 H NMR, 13 C NMR, Elemental analysis , Electrospray ionization mass spectra . The probe 1 functions as a multitarget ion sensor, detect biologically and ecologically important Cd 2+ , PO 4 3− and Cr 3+ . Meanwhile, probe 1 displays selectivity for Cd 2+ over other metal ions and anions in DMF by emission spectrum. Interestingly, probe 1 has been explored to recognize PO 4 3− in CH 3 OH-H 2 O ( v : v = 1:9). The binding stoichiometry of probe 1 with Cd 2+ and PO 4 3− are 2:1 and 1:1, respectively, which are confirmed by Electrospray ionization mass spectra. Probe 1 is selective, sensitive and reversibility/reusability to Cd 2+ and PO 4 3− with the detection limit as low as 0.035 μM and 0.011 μM respectively. Besides, the designed probe 1 has shown potential applications in the area of photo-printing.
研究领域:
分析化学
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环境科学
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生物化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jun Liao,Congcong Ding,Junping Shi,Liang Jiang,Qiuyi Wang,Lielin Wang
The application of chitosan-based materials for the separation of uranium from wastewater was limited due to the lack of active sites. In this work, a chitosan-based composite (CaCO3@aCS/PA) was effectively created by modifying chitosan with CaCO3 and phytic acid to enhance the adsorption performance of chitosan materials. CaCO3@aCS/PA showed no significant changes and no Ca2+ was detected in the solution after stirring for 10 h in a solution with pH > 3, indicating good stability of CaCO3@aCS/PA, which was beneficial for use in adsorption. Moreover, the adsorption capacity and adsorption percentage of CaCO3@aCS/PA for uranium reached 842.0 mg/g (298 K, pH = 4) and 95.4% (C0 = 10 mg/L, pH = 4) and the adsorption equilibrium time was significantly shortened, indicating that the modification with CaCO3 and phytic acid enhanced the adsorption ability of chitosan for uranium, which was related to the synergistic effect of various active sites (CO32–, PO43–, −OH, and –NH2) on CaCO3@aCS/PA for uranium adsorption.
研究领域:
环境科学
·
材料科学
✓ 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）