JOURNAL OF SOLID STATE CHEMISTRY
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2026
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IF 3.5
Zuliang Wang,Aotian Gu,Chunhui Gong,Xiqing Xu,Peng Wang,Yi Yang
This work describes the synthesis of a ZrP–C composite adsorbent using MOF-808 as a template via one-step, high-temperature carbonization. The adsorption performance of ZrP–C material toward fluoride ions was investigated as a function of time, solution concentration, temperature, pH, and coexisting anions. After 3 h, the ZrP–C-3 adsorbent achieved saturation in fluoride uptake, demonstrating a final uptake of 37 mg/g at equilibrium. Fit the adsorption process using kinetic and isothermal adsorption models. The study revealed that adsorption was dominated by monolayer chemical adsorption. Adsorption was found to be endothermic, according to thermodynamic studies, with higher temperatures favoring increased uptake. Combined XPS, XRD, and FT-IR studies revealed that ion exchange, surface complexation, and electrostatic interactions jointly governed fluoride removal. For low-concentration fluoride-containing water bodies, typically those with concentrations below 20 mg/L, adding an appropriate amount of adsorbent could effectively reduce the wastewater concentration to meet national standards. These results highlight the strong potential of ZrP–C-3 for practical applications in fluoride removal from wastewater.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2021
·Vol. 32
·期 9
·3804-3816
·
IF 3.665
Yishen Chen,Jiaxin Li,Xuejun Lai,Hongqiang Li,Xingrong Zeng
High-efficiency macromolecular intumescent flame retardant (MIFR) is urgently demanded but of great challenge. In this work, a novel N -alkoxyamine-containing MIFR-decorated zirconium phosphate (ZrP) nanosheet (denoted as RQMIFR-ZrP) was synthesized and combined with ammonium polyphosphate (APP) to endowed polypropylene (PP) with excellent flame retardancy. With the addition of 6.3 wt% RQMIFR-ZrP and 18.7 wt% APP, PP classed a UL-94 V-0 rating with a high LOI value of 39.5%. Moreover, the peak heat release rate, the total heat release, the peak of CO production, and the peak of CO 2 production of PP/RQMIFR-ZrP/APP decreased by 94.0%, 83.2%, 91.3%, and 91.7%, respectively. It revealed that RQMIFR-ZrP not only generated nitroxyl radicals (NO•) to suppress the chain degradation of PP but also promoted to form high-quality intumescent char layers with the catalytic carbonization and layered barrier effect of ZrP nanosheet, which effectively prevented PP from burning. This work provides a new approach to preparing high-performance flame-retardant polymer.
研究领域:
材料科学
·
高分子化学
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高影响因子
Heliyon
·
2023
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IF 4
Yumiao Zhou,Dong Liang,Yuehua Yao,Lin Chen,Hongjiao Zhang,Yue Wu,Ting Zhao,Na Zhu
Composites of amorphous ZrP and N-doped carbon were prepared in a one-step pyrolysis process instead of general post-loading technique. Owing to their mesoporous structure (6–10 nm) and Zr content (up to 41 wt%), the amphoteric materials have potential use in the cycloaddition of CO 2 to epoxides, which is an acid‒base tandem process including the ring opening of epoxides and the addition of CO 2 . Substantial work has been done on how starting materials impact the structure and performance of composite materials. The coordination between metal and melamine has been confirmed, and it can be implanted in the melamine-polymer initiation of formation of porous metal-carbon materials. The composite catalysts exhibit amphoteric properties, present broad-spectrum adsorption, and finally produce carbonates via cycloaddition of CO 2 to epoxides. It is remarkable that the multiple characteristics of porous solids are stabilized, and no significant loss of catalytic performance is observed after four cycles.
研究领域:
材料科学
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化学工程
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环境科学
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PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Jiaying Liu,Guoqing Xiao,Mingtan Wang,Chunyan Chen,Chunlin Chen,Shuyu Fu
Waterborne epoxy (EP) coatings are widely used for fire protection of steel structures due to their environmental friendliness and cost-effectiveness. Although significant progress has been made in the development of fire-retardant coatings, a key challenge remains regarding their long-term stability under harsh environments with strong ultraviolet (UV) radiation. To address this challenge, this study employed layered α-ZrP nanosheets as a substrate, polyethylenimine (PEI) as a bridging agent and tannic acid (TA) as a functional modifier, to prepare TA/PEI@ZrP hybrids via a Schiff base reaction. These hybrids were then incorporated into an EP intumescent fire-retardant coating to fabricate a TA/PEI@ZrP/EP composite coating. Accelerated aging tests demonstrated that the incorporation of TA/PEI@ZrP improved gloss retention and reduced the degradation of EP structures. Fire performance tests demonstrated that the composite coating exhibits excellent fire resistance. The Bronsted acid sites (BAS) of ZrP catalyzed the formation of a dense and high-strength intumescent char layer, which reduced the backside temperature of the steel substrate from 236.8 °C to 184.7 °C. The char expansion height and expansion ratio increased from 5.73 mm and 5.18 to 23.1 mm and 17.63, respectively. These results indicate that the composite coating exhibits both enhanced fire resistance and improved UV durability, leading to an overall improvement in protective performance. This work provides new insights into the design of multifunctional composite coatings with long-term stability and high-efficiency UV resistance.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Lihan Liu,Yuhan Guo,Yuxin Wang,Senjian Han,Lina Xu,Zengyu Ma,Shiqiang Wang,Tianlong Deng,Zhenyu Liao
Zinc ferrocyanide (ZnFC) composites exhibit high selectivity for cesium, but conventional bulk forms suffer from slow mass transfer. In this work, ZnFC was anchored onto exfoliated α-phosphazene ( E -ZrP) nanosheets via an in-situ growth method to construct ZnFC@ E -ZrP composites, which were further fabricated into ZnFC@E-ZrP/PSf adsorption membranes. The two-dimensional E-ZrP support inhibited ZnFC agglomeration and enhanced Cs + mass transfer through shortened diffusion paths and a surface P–OH-induced electronegative field. Experimental results indicated that ZnFC@ E -ZrP exhibited Cs + adsorption properties significantly surpassing that of the α-ZrP support, along with good acid-base stability and recyclability. The corresponding membrane combined rapid transport from E -ZrP with precise capture from ZnFC, achieving adsorption equilibrium within 5 min in filtration and maintaining >98% Cs + recovery from geothermal brine under high ionic competition. The strategy demonstrated in this work enables the design of efficient materials for rapid cesium separation.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yiqian Lv,Jingmao Zhao,Baomin Fan,Muhammad Mubeen,Mahmood Mubashar,Fangze Zi,Yinxin Liu,Wanling Wang,Muhammad Jawad,Xuan Wang,Shuai Liu
To overcome the inherent limitations of epoxy (EP) coatings in terms of barrier performance, active protection, and weathering resistance, this work presents a multifunctional composite strategy based on hierarchically engineered nanohybrids. Polyaspartic acid (PASP), in coordination with Ca 2+ , was co-functionalized on zeolitic imidazolate framework-8 (ZIF-8) nanoparticles that were in-situ grown on α-ZrP platforms. The resulting PASP-Ca@ZIF-8/ZrP nanohybrids exhibited excellent dispersibility and interfacial compatibility within EP matrix, enabling the fabrication of an advanced PCZZ/EP coating with robust mechanical properties (adhesion strength of 6.7 MPa and tensile strength of 52.3 MPa) and an exceptional barrier performance (| Z | 0.01Hz of 7.1 × 10 10 Ω·cm 2 after 90 days of immersion in 3.5 % NaCl solution). The nanohybrids endowed the coating with pH-responsive release of inhibitory species (PASP, Ca 2+ , Zn 2+ , and 2-MI) imparting a dynamic self-repairing function that effectively mitigated localized corrosion, as validated by salt spray and filiform corrosion tests. During 144 h of accelerated UV exposure, the | Z | 0.01Hz value of PCZZ/EP coating retain over 1 × 10 8 Ω·cm 2 , demonstrating its excellent weathering-resistance. Molecular dynamics simulations further revealed the highest crosslinking density (96 %) and the lowest Cl − diffusion coefficient (0.0159 cm 2 /s) of PCZZ/EP model, indicating a dense internal network that restricted ion transport. This work establishes a scalable and versatile design framework for developing high-performance smart epoxy coatings, offering both mechanistic insight and practical solutions for the long-term protection of steel infrastructures in severe marine and industrial environments.
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POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 7.4
Zehua Zhuo,Rui Wang,Shaoyun Chen,Jianhong Gao,Cuifang Cai,Yanyu Zheng,Xiaoying Liu,Bo Qu,Qinghui Chen,Dongxian Zhuo
Stereolithography (SLA) is highly valued in high-end manufacturing for its exceptional design flexibility. However, the inherent flammability of photosensitive resins significantly limits their safe application. This study designed and synthesized an intrinsically flame-retardant photosensitive resin (TPH) containing phosphorus and sulfur elements. The TPH resin was blended with a phosphorus-containing reactive diluent and an ionic liquid (TFS) to prepare a photosensitive resin (TPHP) suitable for SLA technology. An innovative approach was employed where macroscopic pore structures were constructed through 3D printing, and due to phase separation between the ionic liquid and the 3D-printed samples, microscopic pores were incorporated within the SLA-printed specimens, a porous framework was formed. These pores served as reaction sites for in-situ growth of a nano-zirconium phosphate (α-ZrP) layer on the surface. Thermogravimetric and flame retardancy tests demonstrated that the incorporation of α-ZrP significantly enhanced the material's thermal stability, flame retardancy, and smoke suppression properties. Compared with unmodified samples, the char residue was increased to 47.3%, the limiting oxygen index reached 29.0%, and the UL-94 rating achieved V-0. Cone calorimetry tests showed reductions in peak heat release rate, total heat release, and total smoke production by 42.1%, 65.4%, and 75.1%, respectively. The results indicate that this work provides a new strategy for flame-retardant 3D printing. It resolves the intrinsic conflict between flame retardancy and printability by combining surface pore engineering with in situ growth to achieve surface functionalization without sacrificing printability.
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APPLIED CLAY SCIENCE
·
2018
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IF 3.641
Huali Xie,Xuejun Lai,Hongqiang Li,Xingrong Zeng
Realizing the high efficiency of halogen-free flame retardant is one of the biggest challenges and the most urgent issues in the development of high performance polypropylene (PP). Coupling the catalytic carbonization and free-radical quenching mechanism is proposed to be an efficient method to address this issue. In this work, a functionalized zirconium phosphate (F-ZrP) with good catalytic carbonization capability was synthesized, and was combined with N-alkoxy hindered amine (NOR) to flame-retard PP. The composition showed high flame-retardant efficiency. When the content of NOR, F-ZrP and ammonium polyphosphate were 0.2 wt%, 4.95 wt% and 14.85 wt%, respectively, the flame retardant PP reached a limiting oxygen index of 36.0% and achieved a UL-94 V -0 rating. Meanwhile, the peak heat release rate , average heat release rate , total heat release, peak smoke production rate and total smoke production were declined by 95.6%, 90.6%, 73.3%, 93.5% and 80.6%, respectively. It revealed that F-ZrP formed closed micron-scale char-cages via interfacial carbonization. In the char-cages, the nitroxyl radicals generated by NOR efficiently quenched the active free-radicals produced by PP and induce their cyclization reaction. Under the further catalytic effect of ZrP, graphitized crystalline char with extraordinary thermostability and barrier effect was generated quickly and protected the polymer from burning.
研究领域:
材料科学
·
化学工程
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高影响因子
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.
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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
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材料化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Cheng Wang,Siqi Huo,Guofeng Ye,Qiu Shi,Zhengping Fang,Hao Wang,Zhitian Liu
To enhance the integrated properties of intumescent fire-resistant coatings (IFRCs) for structural steel, multifunctional phenylboronic acid-decorated zirconium phosphate (ZrP-M) nanosheets were fabricated in this work. The ZrP-M nanosheets featured superior char-forming capacity, flame-retardant effect and hydrophobicity , which simultaneously enhanced the fire resistance, smoke suppression, thermal stability, and water/acid/alkali tolerance of IFRCs. Compared with the unmodified IFRC, the IFRC with 3 wt% ZrP-M (IFRC-4) showed 74.3%, 74.5% and 41.9% reductions in the peak heat release rate (PHRR), total heat release (THR) and total smoke release (TSR). Meanwhile, the IFRC-4 exhibited significantly improved charring capacity and water tolerance, of which the char yield and water contact angle reached 70.9% and 116.9°. The superior fire retardancy and carbonization ability of IFRC-4 enabled it to outperform previous fire-retardant coatings. The introduction of ZrP-M nanosheets also improved the acid and alkali resistance of IFRC. In a fire, the ZrP-M mainly promoted the formation of highly intumescent and compact chars in the condensed phase, thereby strengthening the fire resistance of IFRC. Thus, this work offers an integrated strategy to prepare fire-resistant, smoke-suppressive, thermally-stable and water/acid/alkali-tolerant coatings via introducing versatile ZrP nanosheets, which are expected to find ubiquitous applications in modern construction.
研究领域:
材料科学
·
防火技术
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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
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纤维科学
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阻燃化学
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材料化学
·
纺织功能材料
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高影响因子
危险品化学品经营许可证（带存储）