JOURNAL OF SOLID STATE CHEMISTRY
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2018
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IF 2.179
Yun-Xiang Ma,Ya-Ping Gong,Chun-li Hu,Jiang-Gao Mao,Fang Kong
Three new d 10 transition metal selenites containing PO 4 tetrahedron, namely, Cd 7 (HPO 4 ) 2 (PO 4 ) 2 (SeO 3 ) 2 ( 1 ), Cd 6 (PO 4 ) 1.34 (SeO 3 ) 4.66 ( 2 ) and Zn 3 (HPO 4 )(SeO 3 ) 2 (H 2 O) ( 3 ), have been synthesized by hydrothermal reaction . They feature three different structural types. Compound 1 exhibits a novel 3D network composed of 3D cadmium selenite open framework with phosphate groups filled in the 1D helical tunnels. The structure of compound 2 displays a new 3D framework consisted of 2D cadmium oxide layers bridged by SeO 3 and PO 4 groups. Compound 3 is isostructural with the reported solids of Co 3 (SeO 3 ) 3-x (PO 3 OH) x (H 2 O) when x is equal to 1.0. Its structure could be viewed as a 3D zinc oxide open skeleton with SeO 3 and HPO 4 polyhedra attached on the wall of the tunnels. They represent the only examples in metal selenite phosphates in addition to the above cobalt compounds. Optical diffuse reflectance spectra revealed that these solids are insulators, which are consistent with the results of band structure computations based on DFT algorithm.
研究领域:
无机化学
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材料科学
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固体化学
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产品关联
DOI
高影响因子
Lubricants
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2018
·Vol. 6
·期 3
·63
·
IF 0
Yingjing Dai,Hong Xu,Jinxiang Dong
Vegetable oil has significant potential as a base oil, and substitute for mineral oil in grease formulation due to its biodegradability, low toxicity and excellent lubrication. This paper studied the development of vegetable oil-based greases with α-Zr(HPO4)2·H2O (α-ZrP) as an additive, exploring base oil influence in tribological behavior. The results demonstrated that the addition of α-ZrP in vegetable-based greases is beneficial to anti-wear property. α-ZrP particles exhibit good performance in anti-wear, friction-reduction and load-carrying capacity, and its tribological performances are better than the normally used molybdenum disulfide and graphite additives. Owing to its superior tribological properties as a vegetable oil-based grease additive, α-ZrP holds great potential for use in environmentally friendly applications in the future.Keywords:anti-wear additive;α-Zr(HPO4)·H2O;vegetable oil;anhydrous calcium grease
研究领域:
材料科学
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润滑工程
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产品关联
DOI
ACS Applied Nano Materials
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2020
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IF 0
Qiaoling Liu,Xiuyun Niu,Kaixin Xie,Yanmei Yan,Borong Ren,Ruirong Liu,Yuxia Li,Lin Li
Nitrogen(N) and sulfur(S) codoped carbon dots (N/S-CDs) are facilely developed by a one-pot hydrothermal process from thiourea and o-phenylenediamine as carbon precursors. The as-fabricated N/S-CDs reveal a high quantum yield of 26% and a large Stokes shift up to 106 nm under the excitation of 450 nm with good water dispersibility as well as antiphotobleaching. With addition of Fe3+, fluorescence quenching happens with a good linearity within 0.3–70 μM and a low detection limit of 0.19 μM. However, the quenched fluorescence could be rapidly recovered with the addition of monohydrogen phosphate ([HPO4]2–) due to formation of the stable complex [Fe(HPO4)]+ by a competitive reaction between the N/S-CDs-Fe3+ complex and [HPO4]2–, a good linearity is in the range of 0.3–60 μM with a low detection limit of 0.27 μM. Thus, a significant “on–off–on” fluorescence response is performed with obvious color change from yellow-dark brown-yellow. In addition, the practical application and the confocal microscopic images all suggest that the N/S-CDs could target both Fe3+ and [HPO4]2– in living cells, implying that the N/S-CDs possess the diverse applications for Fe3+ and [HPO4]2– recognitions in biomedical fields.
研究领域:
纳米技术
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分析化学
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生物医学成像
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环境传感
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材料科学
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DOI
AICHE JOURNAL
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2025
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IF 4
Jia Xiong,Qiang Sun,Hongxia Gao,Zhiwu Liang
Catalytic amine–based solution regeneration has attracted considerable attention due to its potential to reduce energy consumption in carbon dioxide (CO 2 ) separation. However, the limited catalytic activity and cycling stability of catalysts under high–temperature alkaline conditions hinder their industrial application. Herein, zirconium hydrogenphosphate (ZrHP) catalysts, featuring abundant acidic sites, were first utilized for amine solution regeneration. By leveraging its proton donation and acceptance mechanism, efficient monoethanolamine solution regeneration was achieved. The ZrHP–4 catalyst demonstrated a 526% increase in the instantaneous CO 2 desorption rate compared to the non–catalytic test, reducing the relative heat duty by 48%. Moreover, ZrHP–4 exhibited remarkable stability over 10 cycles without requiring regeneration. Density functional theory calculations revealed that ZrHP promotes CO 2 desorption by elongating the C—N bond of carbamate and lowering the proton transfer energy barrier. Therefore, this study offers novel insights into the design and mechanistic understanding of efficient and stable catalysts for amine solution regeneration.
研究领域:
化学工程
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催化科学
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环境科学
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2025
·Vol. 172
·期 5
·050532
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IF 3.3
Xin-Ming Fan,Ke-Bo Lin,Pei-Yao Li,Jia-Feng Zhang,Ling-Jun Li,Jie-Xi Wang,Xia-Hui Zhang,Jun-Chao Zheng
The exponentially growing global demand for lithium resources has accelerated the development of sodium-ion batteries (SIBs) as a promising alternative to conventional lithium-ion batteries. In this work, we successfully synthesized a novel open-framework layered material, Na2[(VO)2(HPO4)2(C2O4)] (designated as NaVPC), through an eco-friendly one-step hydrothermal method that eliminates energy-intensive post-calcination processes. The unique architecture of NaVPC features (1) three-dimensional ion diffusion channels enabling reversible Na+ extraction/insertion, (2) minimal lattice contraction (<3%) during cycling, and (3) an exceptional average operating voltage of 3.8 V vs Na+/Na. When composited with single-walled carbon nanotubes, the hybrid electrode delivers enhanced electrochemical performance, achieving a specific capacity of 80.6 mAh g−1 at 0.1 C and maintaining 91.7% capacity retention after 100 cycles at 2 C. Through a combination of ex situ X-ray diffraction, X-ray photoelectron spectroscopy, and density functional theory calculations, we systematically investigated the structural evolution and Na+ migration mechanism, establishing a fundamental framework for understanding the charge storage behavior in this open-framework material.
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2017
·
IF 2.299
Tong-Ying Chang,Chun-Li Hu,Dong Yan,Jiang-Gao Mao
Two new phosphates, non-centrosymmetric (NCS) (H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 and centrosymmetric (CS) Ba 2 Cd 3 (PO 4 ) 2 (HPO 4 ) 2 have been prepared by hydrothermal reactions . The single-crystal X-ray structural analyses have shown that they crystallized in space group P −42 1 c and P2 1 /c , respectively·(H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 features a three-dimensional (3D) network structure composed of ZnO 4 and PO 4 tetrahedra that are interconnected via corner-sharing, forming 1D channels of 6-MRs and 8-MRs which are filled by Ca 2+ and H 3 O + cations, respectively. Ba 2 Cd 3 (PO 4 ) 2 (HPO 4 ) 2 features a layered [Cd 3 (PO 4 ) 2 (HPO 4 ) 2 ] 4- composed of 1D chain of edge-sharing CdO 6 octahedra that are further bridged by PO 4 tetrahedra with Ba 2+ cations filling the interlayer spaces. Luminescent studies suggest that (H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 emits blue light. Optical diffuse reflectance spectra show the experimental band gaps for (H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 and Ba 2 Cd 3 (PO 4 ) 2 (HPO 4 ) 2 are 5.67 eV and 5.68 eV, respectively. The UV cut-off edge of title compounds are around at 218 nm·(H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 exhibits a very weak SHG response.
研究领域:
材料科学
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晶体学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Jiahao Wei,Gonggang Sun,Zheng Hong,Qi Wang,Xinbao Li
Catalysts for NH 3 selective catalytic reduction (NH 3 -SCR) suffer from severe alkali metal poisoning, particularly by potassium (K). In this study, a series of K-resistant zirconium phosphate supported CeO 2 -SnO 2 catalysts (CeSn/ZrPs) were prepared by a hydrothermal-impregnation method and the simulated poisoning process with K loading amounts ranging from 1 wt% to 10 wt% was achieved by impregnating the catalysts with a KCl solution. The catalyst that contained 20 wt% Ce and 1 wt% Sn exhibited excellent SCR activity and K-poisoning resistance. The NO conversion over the CeSn/ZrP catalyst achieved 91.6% at 350 °C after 5 wt% K poisoning, and even retained 80.2% when the K content was increased to 8 wt%. The resistance mechanism of CeSn/ZrP against K-poisoning was studied by a series of characterizations. The results demonstrate that CeSn/ZrP exhibits a high surface area, strong acidity and enhanced redox properties due to Sn doping. The abundant Brønsted acid sites provided by the zirconium phosphate support played a crucial role in resisting K poisoning. In-situ DRIFTS revealed that KCl poisoning primarily suppresses the SCR reaction by occupying acid sites and reducing NH3 adsorption. The abundant acid sites of CeSn/ZrP can ensure that the catalyst retains a certain NH 3 adsorption capacity under high KCl loading.
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Pengtao Lei,Xiangyang Xu,Chenyu Huang,Dongsheng Chen,Zhenkun Jiang
To optimize the proton transport performance of polyvinylidene fluoride (PVdF), a proton exchange membrane (PEM) material, carbon nanotube (CNT), and zirconium hydrogen phosphate (ZrP) have been blended into the PVdF matrix. Adopting a hydrothermal synthesis route, the acidic ZrP can be better conjugated with the positively charged CNT functionalized by cetyltrimethylammonium bromide (CTAB). As visualized using electroscopes, ZrP nanocrystallines are intimately dotted and homogeneously distributed on CNT. The ZrP–PVdF interaction can be attributed to hydrogen bonding between hydroxyl and F-terminal groups. By incorporating well CNT/ZrP into PVdF via solution casting, the pore architecture can be regulated; namely, the macro-voids in PVdF are greatly reduced. The composite membranes exhibit tensile stress of 48–52 MPa while sustaining the thermal stability of PVdF. The incorporated CNT/ZrP can suppress void porosity and enhance film hydrophilicity. With improved wettability, the methanol permeability can be reduced to less than 2 × 10 −9 cm 2 ∙s −1 , ca. one-sixth that of pure PVdF. The proton conductivity for PVdF-CNT 0.03 -ZrP 0.06 , with CNT and ZrP mass content respectively 3 and 6 wt% that of PVdF, attains 0.089 S·cm −1 at 100°C, showing upgraded conducting capability. The membrane selectivity can be remarkably enhanced, verifying that CNT/ZrP blending is a facile and profitable approach for PEM optimization.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2018
·
IF 8.097
Mei Ma,Shouwu Guo,Wenzhuo Shen
Tetravalent metal phosphates (M(HPO4)2, M = Zr, Sn, and Ti) have robust layered structures with interlayer d spacings over 7.5 Å, but show poor electrical conductivity. On the other hand, single-atomic-layered reduced graphene oxide (rGO) sheets exhibit a high electrical conductivity. In this work, the combination of rGO and M(HPO4)2 is explored for their potential as anode materials for lithium ion batteries (LIBs). Specifically, rGO/M(HPO4)2 composites are prepared, and their electrochemical performances are investigated systematically. In comparison with bare M(HPO4)2, the rGO/M(HPO4)2 composites exhibit larger specific capacity, higher rate capability, better cyclic stability, lower voltage for lithium ion insertion and extraction, and improved first Coulombic efficiency. We propose that the superior electrochemical performances of the composites are primarily contributed to the large interlayer space of M(HPO4)2 and the rGO sheets cladded on the surfaces of the layered M(HPO4)2. The attached rGO sheets bridge the layers together forming a network that is beneficial for the electron and ion diffusion within the composites, thus enhancing the discharge/charge rate capability of the composites. In addition, the attached rGO sheets provide extra anchoring sites for Li+; the specific capacity of the composites as anode materials is thus enhanced.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Xiaosheng Zhang,Hong Xu,Zhijun Zuo,Zhi Lin,Stanislav Ferdov,Jinxiang Dong
Copper zirconium phosphate hydrate (Cu(OH)2Zr(HPO4)2·2H2O, hereafter referred to as Cu-α-ZrP) with high crystallinity was directly synthesized in a NaF-CuO-ZrO-P2O5-H2O system under hydrothermal conditions. The copper ion was confirmed to be an exchangeable cation in the Cu-α-ZrP through elemental analysis and a proton ion exchange process. The crystal structure of the Cu-α-ZrP was determined ab initio by using X-ray powder diffraction data. In the structure, the CuO6 octahedron would be located in an exchangeable atom position. Moreover, Cu-α-ZrP was evaluated as an additive in grease in a four ball test. The maximum nonseizure load (PB, representing the load-carrying capacity) of the base grease containing Cu-α-ZrP was increased from 353 to 1235 N. The excellent load-carrying capacity may be explained by the easier adherence of the material to the worn surface forming a tight protective film.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）