APPLIED CATALYSIS B-ENVIRONMENTAL
·
2014
·
IF 6.007
Jun Yu,Zhichun Si,Lei Chen,Xiaodong Wu,Duan Weng
A zirconium phosphate @ Ce 0.75 Zr 0.25 O 2 (ZP/CZ) catalyst was synthesized by impregnating zirconium phosphates on Ce 0.75 Zr 0.25 O 2 microspheres. Catalysts with different structures were also synthesized by various methods to illustrate the structure advantage of ZP/CZ catalyst in selective catalytic reduction of NO x by ammonia (NH 3 -SCR). The catalysts were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), BET surface area, Infrared (IR) spectra, Ultraviolet-visible (UV–vis) spectroscopy, X-ray photoelectron spectroscopy (XPS), H 2 -temperature programmed reduction (TPR) and diffuse reflectance infrared Fourier transformed spectra (DRIFTS) of NH 3 /NO x adsorption. ZP/CZ catalyst presents excellent catalytic activity at 250–450 °C with a good N 2 selectivity under high space velocity of 300,000 h −1 . Firstly, the zirconium phosphate provides adsorption sites for ammonia on the surface of the catalyst and the cerium sites in the core act as the redox sites for NO oxidation. The pre-combination of zirconium and phosphate can reduce the strong interactions between phosphates and cerium ions. Therefore, the mobility of surface lattice oxygen on Ce 0.75 Zr 0.25 O 2 catalyst is retained, which is essential to obtain a catalyst with high NH 3 -SCR activity at low temperatures. Moreover, NH 4 NO 3 has proved to be an important intermediate for the NH 3 -SCR reaction on the surface of ceria based catalysts. The ZP/CZ catalyst preserves plenty of oxygen vacancies, facilitating the Ce 4+ → Ce 3+ redox circles and therefore promotes the nitrites/nitrates formation and desorption on catalyst. Two distinct adsorption sites for NH 3 and NO x result in a close contact between ads-NH 3 /NH 4 + and ads-NO 3 − /NO 2 − species on ZP/CZ catalyst, which can react with NO rapidly with the participation of active surface lattice oxygen.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2017
·
IF 4.364
Lei Chen,Dazhi Sun,Jin Li,Guangdao Zhu
A melt compounding method to achieve the exfoliation of layered zirconium phosphate (ZrP) nanoplatelets was presented in this work. ZrP nanoplatelets were first intercalated by diglycolamine (DGA) to increase the interlayer distance and functionality. In the next melt compounding process, the cyclic anhydrides of maleic anhydride grafted polyolefin elastomers (POE-g-MA) reacted with the hydroxyls in DGA-ZrP. Subsequently, the long polyolefin chains of POE-g-MA intercalated into the interlayer of ZrP smoothly and exfoliated the nanoplatelets successfully. ZrP nanoplatelets with various sizes were fully exfoliated in POE-g-MA matrices. The modulus of elasticity of POE-g-MA was improved by the incorporation of ZrP nanoplatelets and further increased if the nanoplatelets are exfoliated. The ductility of ZrP/POE-g-MA compounds also became better, if ZrP nanoplatelets were first intercalated by DGA and then exfoliated, especially for the smaller nanoplatelets. Our work provides a general method to prepare polymer nanocomposites containing exfoliated ZrP nanoplatelets in a large scale.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2016
·Vol. 11
·期 1
·1-7
·
IF 2.584
Xia Fangqing,Yong Huaisong,Han Xiao,Sun Dazhi
Exfoliation of layered inorganic nanomaterials into single-layered sheets has been widely interested in materials chemistry and composite fabrication. Here, we report the exfoliation of layered zirconium phosphate nanoplatelets by using small molecule intercalating agents in ionic liquids, which opens a new platform for fabricating single-layered inorganic materials from synthetic layered compounds.
研究领域:
材料化学
·
纳米材料科学
·
复合材料制备
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2014
·
IF 2.538
Hang Hu,Qiang Chen,Zhanjun Chen,Hongyu Chen
To solve the major problem of interfacial side reactions between LiMn 1.5 Ni 0.5 O 4 (LMNO) and liquid electrolyte at high voltages, zirconium phosphate (ZrP) wrapped cathode material LMNO@ZrP, with different aspect of ZrP in 2 wt% and 4 wt%, have been prepared by a hydrothermal method. In particular, we focus on the distribution of ZrP on the LMNO surface to find out the optimal coating material and amount. The effects of ZrP coating layer have been investigated by comparison of the properties of the ZrP coated LMNO (LMNO@ZrP) and pristine LMNO electrodes by several electrochemical characterizations. The electrochemical impedance spectroscopy results show that LMNO@ZrP-3M-2 electrode exhibits an improved electrochemical property of suppressing the impedance increase. In the cell life test, LMNO@ZrP-3M-2 electrode shows a high capacity retention of 94.6% after 200 cycles at 55 °C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2018
·
IF 0
Changhui Zhu,Qiying Liu,Dan Li,Haiyong Wang,Caihong Zhang,Chunhua Cui,Lungang Chen,Chiliu Cai,Longlong Ma
Crystal α-zirconium phosphate (α-ZrP) was prepared by a hydrothermal method and exfoliated into a layered structure by n-hexylamine (C6H13NH2). Ni-based catalyst (Ni/ZrP) was promoted by loading nickel on the layered α-ZrP via ion exchange. The catalyst was performed to catalyze hydrodeoxygenation of 5-hydroxymethylfurfural (HMF) to 2,5-dimethylfuran (DMF), and a 68.1% yield of DMF and 100% conversion of HMF were achieved at 240 °C, 5 MPa H2, and 20 h. The DMF yield can still retain 52.8% after five cycles. The characteristics of the catalyst were investigated via N2 adsorption–desorption, X-ray diffraction, field emission scanning electron microscopy, high-resolution transmission electron microscopy, pyridine-adsorbed Fourier transform infrared (FTIR) spectra, FTIR spectra, inductively coupled plasma mass spectrometry, and thermogravimetric analysis–mass spectrometry, as well as Raman spectroscopy. A pathway from HMF to DMF was found with MF as the intermediate product, and DMF production was preferable via the −CH2OH group hydrogenolysis of HMF over Lewis acidic sites of Ni/ZrP, which is caused by the zirconium vacant orbits.
研究领域:
化学工程
·
催化
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Yiqian Lv,Bo Wang,Jingmao Zhao,Haiqing Liu,Ziji Li,Fangze Zi,Yuhao Guo
To overcome the critical limitation of conventional epoxy coatings in providing long-term barrier effect against corrosion species and on-demand corrosion inhibition at damaged sites, this study develops a self-protective CeO 2 @ZrP/EP composites coating via in-situ hydrothermal growth of pH-responsive CeO 2 nanoparticles on lamellar α-ZrP nanosheets. The hydroxyl-rich CeO 2 nanoparticles not only enhance interfacial compatibility by filling voids and creating mechanical interlocking between α-ZrP nanosheets and the epoxy matrix, but also enable pH-triggered Ce 3+/4+ release under acidic condition. After 60 days immersion, the composite coating achieved a low-frequency impedance modulus (|Z| 0.01Hz ) of 3.5 × 10 9 Ω·cm 2 , which is four orders of magnitude higher than pure EP coating (3.7 × 10 5 Ω·cm 2 ). Crucially, elemental mapping confirmed 2.0 wt% cerium enrichment at artificial scratches, demonstrating autonomous active inhibition. This dual-action strategy synergistically integrates durable barrier protection with intelligent corrosion inhibition, providing long-term steel protection in marine environments.
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2017
·Vol. 12
·期 1
·1-10
·
IF 2.833
Han Xiao,Yong Huaisong,Sun Dazhi
Two-dimensional (2D) inorganic layered nanoplatelets exhibit superior lubricating properties in both solid states and oil dispersions. In this paper, we have systematically investigated the effects of surface and interlayer modifications on the tribological performance of layered α-zirconium phosphate (ZrP) nanoplatelets in mineral oil. The pristine layered ZrP nanoplatelets were first reacted with silanes of different alkyl chains to achieve outer surface modifications, followed by intercalation with different alkyl amines to alter the interlayer spacing. Friction and anti-wear studies on ZrP nanoplatelets with various modifications in mineral oils suggest that a longer alkyl chain on the outer surfaces along with a small increase in interlayer spacing would lead to a better tribological behavior especially under a relatively heavy load condition. Our results illustrate the ability of tuning the tribological properties of 2D layered nanoplatelets in oils by varying their surface and interlayer functionalities and would be helpful for understanding the underlying tribological mechanisms of nanolubricating oils containing 2D layered nanoplatelets.
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研究领域:
材料科学
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纳米科技
·
表面工程
·
润滑技术
·
tribology
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Riyang Shu,Yu Chen,Yuankai Lin,Yongyuan Deng,Yan Liu,Kaixin Li,Tao Yin,Zhongqing Ma,Jinxing Long
Catalytic hydrodeoxygenation (HDO) is an efficient and promising approach to upgrade lignin-derived phenolic compounds for the production of high-quality liquid fuels. In this work, a readily obtained Ni-Ni 3 P/ZrP catalyst featuring synergistic catalytic sites of Ni-Ni 3 P and Lewis-Brønsted acid was provided for promoting the HDO performance of lignin-derived phenolic compounds. By regulating the ratio of Zr to P (Zr/P), the catalytic activity of Ni/ZrP was significantly modified. With the optimized catalyst of Ni-Ni 3 P/ZrP-0.75, guaiacol is completely converted into cyclohexane at a low temperature of 240 °C. Further investigation shows that the synergistic effect of Ni and Ni 3 P, deriving from that Ni acts as metal site to activate hydrogen and Ni 3 P serves as Lewis acid site to adsorb guaiacol substrate, promotes the hydrogenation procedure significantly. Moreover, ZrP support as Lewis acid also demonstrates a synergistic interaction with Brønsted acid site that derives from the P-OH group. The coordination of Lewis-Brønsted acid site significantly improves the deoxygenation procedure. The strong interaction between Ni species and ZrP support accelerates the sequential occurrence of hydrogenation and deoxygenation procedures, thus improving the HDO efficiency. The Ni-Ni 3 P/ZrP-0.75 can be reused at least six runs without significant activity loss. Moreover, this Ni-Ni 3 P/ZrP-0.75 is efficient on the upgrading of realistic lignin-oil, with the hydrocarbon content increase from 13.4 % to 93.8 %. Therefore, this work provides a valuable reference for the rational design of bifunctional catalysts in the HDO reactions.
研究领域:
催化化学
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生物质能源
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环境友好化学
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表面科学
·
材料化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhuojun Meng,Ke An,Qing Liu,Pengfei Zhang,Shijun Lei,Zhenhua Li,Jian Sun,Zhengdong Cheng
The sorbent dialysis system has emerged as one of the most promising research directions in wearable artificial kidneys (WAK), owing to its substantially lower water consumption compared to conventional hemodialysis (reduced from 120 L to 6 L per treatment). These systems typically incorporate multilayer adsorption cartridges, where zirconium phosphate (ZrP) serves as the critical component for eliminating urea-derived ammonium ions (NH₄ + ). However, the inherent lamellar structure of ZrP induces material stacking, resulting in elevated column pressure during operation - a significant limitation that hinders broader clinical adoption. In this study, we developed a novel methodology for fabricating ZrP composite hydrogel spheres with high NH₄ + removal capacity. We first demonstrate that thermal treatment facilitates the intercalation of ionic liquid into α-ZrP interlayers, resulting in expanded interlayer spacing. This structural modification enhances subsequent Na + ion exchange and further optimizes the NH₄ + exchange capacity, representing a 5-fold improvement over untreated α-ZrP. Next, we engineered a structural matrix by using cellulose nanofibers (CNFs) to host ZrP nanoplates. Through an ionic liquid-assisted synthesis strategy, we simultaneously achieved CNF regeneration and ZrP intercalation, producing CNF/ZrP composite hydrogel spheres. These spheres address layer restacking while improving mechanical robustness and ion exchange performance. The resulting CNF/ZrP spheres also exhibit superior column-packing characteristics, achieving 88.7 % overall NH₄ + removal efficiency (6.41 mg g ZrP −1 min −1 ) from a 12 mL physiological saline solution in the model flow system. This study establishes CNF/ZrP hydrogel spheres as a promising sustainable adsorbent platform for next-generation dialysis cartridges.
研究领域:
生物医学工程
·
再生医学
·
肾脏替代治疗
·
纳米材料
·
药物递送系统
✓ 已验证
产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2023
·Vol. 18
·期 5
·e2937
·
IF 1.8
Xinxin Xia,Hongyang Yu,Pindian Qin,Mingyu Dai,Lixue Jia,Yi Deng,Cuiqin Li,Feng Li
Tetraethyl p -xylenediphosphate is used as the organic ligand to prepare the organodiphosphonate Zr-based metal organic frameworks (ZrP-MOF). The physicochemical characterizations of ZrP-MOF under different hydrothermal and calcination conditions were performed by various analytical techniques. ZrP-MOF was then employed as a catalyst for the catalytic transfer hydrogenation of furfural with alcohol as the hydrogen donor, and the preparation parameters and catalytic properties of ZrP-MOF were investigated. Compared with fresh ZrP-MOF, the furfural conversion of ZrP-MOF calcined at 825 K increased from 43.5% to 95.1%. Calcination can significantly increase the Lewis/Brønsted acid ratio and enlarge the pore structure of ZrP-MOF, which promote the furfural catalytic transfer hydrogenation reaction over Zr-O based on the Meerwein–Ponndorf–Verley reduction.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Wei Tan,Yin Tian,Lei Tan,Lu Bai,Ying Chang,Guixiang Song,Yuanlin Ren,Ping Li,Xiaohui Liu
Addressing the dual challenges of diminishing fossil reserves and proliferating plastic waste accumulation, harnessing renewable cellulose resources offers a promising solution. Guided by the principles of intumescent flame retardant system, the eco-friendly hyperbranched phosphonitrile networks integrating acid, carbon and gas sources was prepared and covalently anchored onto Lyocell fabrics. Further, the hyperbranched phosphonitrile networks induced the interfacial assembly of zirconium phosphate (ZrP) to construct flame retardant Lyocell fabrics (Lyocell-TCHNs@ZrP) with low-temperature multiphase catalytic carbonization and high-temperature physical shielding effects. The char residue of Lyocell-TCHNs@ZrP under N 2 atmosphere was increased from 13.63 % of original sample to 39.12 % at 800 °C, while the thermo-oxidative behavior was also suppressed in air conditions. Meanwhile, the peak heat release rate (PHRR) and total heat release (THR) of Lyocell-TCHNs@ZrP were reduced by 66.10 % and 80.90 %, which showed great self-extinguishing ability in combustion test. In addition, the tensile strength of Lyocell-TCHNs@ZrP was slightly improved, while the hand feel and whiteness were well remained. This work provided fundamental insights into the molecular design of hyperbranched intumescent flame retardants and the synergistic interaction between solid catalysts, along with an effective strategy for the fire safety performance of cellulose derived textiles.
研究领域:
高分子材料
·
纤维科学
·
阻燃化学
·
材料化学
·
纺织功能材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Bin Ye,Mingzhi Cai,Miao Xie,Hang Dong,Wujie Dong,Fuqiang Huang
Improving the durability of cathode materials at low temperature is of great importance for the development nowadays of lithium ion batteries, since the practical capacity and cycling stability of the electrode are reduced significantly at low temperature. Herein, by amorphous Zr3(PO4)4 surface engineering, we realize a stable high-voltage LiCoO2 operation (4.6 V) at −25 °C. The highly amorphous surface layer can help to form a high-quality cathode-electrolyte interphase with strong stability and low interface resistance, especially at low temperature. Such a surface-engineered LiCoO2 shows a capacity of 179.2 mAh g–1 at 0.2C and an excellent cyclability with 91% capacity retention after 300 cycles (1C). As a comparison, bare LiCoO2 shows only 161.6 mAh g–1 and 1% capacity retention under the same circumstances. This work confirms that surface regulation and control engineering is an effective route to improve the high-voltage and low-temperature performance of LiCoO2.
研究领域:
材料科学
·
电化学
·
储能技术
·
表面工程
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）