Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Yin Jinglin,Kang Zhengzhong,Fu Yao,Cao Weicheng,Wang Yiran,Guan Hanxi,Yin Yu,Chen Binbin,Yi Xianfeng,Chen Wei,Shao Wei,Zhu Yihan,Zheng Anmin,Wang Qi,Kong Xueqian
The defects in metal-organic frameworks (MOFs) can dramatically alter their pore structure and chemical properties. However, it has been a great challenge to characterize the molecular structure of defects, especially when the defects are distributed irregularly in the lattice. In this work, we applied a characterization strategy based on solid-state nuclear magnetic resonance (NMR) to assess the chemistry of defects. This strategy takes advantage of the coordination-sensitive phosphorus probe molecules, e.g., trimethylphosphine (TMP) and trimethylphosphine oxide (TMPO), that can distinguish the subtle differences in the acidity of defects. A variety of local chemical environments have been identified in defective and ideal MOF lattices. The geometric dimension of defects can also be evaluated by using the homologs of probe molecules with different sizes. In addition, our method provides a reliable way to quantify the density of defect sites, which comes together with the molecular details of local pore environments. The comprehensive solid-state NMR strategy can be of great value for a better understanding of MOF structures and for guiding the design of MOFs with desired catalytic or adsorption properties.
研究领域:
材料科学
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化学
·
固体核磁共振光谱
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催化
·
吸附
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DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2021
·Vol. 233
·期 1
·1-9
·
IF 2.52
Yu Hui-Bo,Zhang Xian-Qiu,Han Xue,Yang Zhen-Zhen,Zhou Ya-Wen,Ding Wen,Du Ming-Xia
It is reported that residual aluminum from coagulation pretreatment can increase membrane fouling in nanofiltration (NF) or reverse osmosis (RO) desalination systems. However, the membrane fouling mechanism of residual aluminum and the effective control measures are not very clear. In this study, the nanofiltration membrane fouling caused by poly-aluminum chloride (PACl), the inhibitory effect of amino trimethylene phosphonic acid (ATMP) on aluminum foulants, and calcium carbonate scale in the presence of residual aluminum were investigated by permeate experiments and scanning electron microscopy (SEM) observation of the fouled membranes. Besides, the effect of adding ultrafiltration before nanofiltration on reducing membrane fouling caused by residual aluminum was also investigated. The results showed that most of the residual aluminum in feed eventually formed insoluble particles and fine flocs, and accumulated gradually on the membrane surface, which was a typical colloid particle fouling. ATMP can reduce the membrane fouling caused by residual aluminum to some extent, and the permeate flux ratio ( J/J c ) increased from 0.83 to 0.89 when ATMP increased to the optimal dose of 6 mg⋅L −1 . However, this means can still effectively eliminate carbonate scale, even in the presence of residual aluminum. Moreover, ultrafiltration pretreatment prior to nanofiltration was very effective to control membrane fouling, and the comprehensive cost was calculated to be only 0.006 $⋅m −3 . Therefore, the combined process of coagulation-ultrafiltration as a pretreatment of nanofiltration or reverse osmosis should be an ideal way to prevent membrane fouling caused by residual aluminum.
研究领域:
环境科学
·
水处理工程
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Jun Wan,Runnian Gao,Xiaonan Feng
Non-reactive phosphorus (e.g., phosphonate) contributes to eutrophication, while little attention has been paid to its control. The iron-based materials are highly efficient in orthophosphate removal from water, while the correlation between their physicochemical properties and selective phosphonate (e.g. Nitrilotri(methylphosphonic acid) (NTMP)) adsorption is still unclear. In this study, Fe 3 O 4 (magnetite), FeOOH (goethite) and Fe 2 O 3 (hematite) with different crystal structures, particle sizes and surface area were synthesized for NTMP adsorption. The physicochemical properties of the three kinds of iron oxides were characterized. The batch experiments were applied to explore the NTMP adsorption and desorption performance. The maximum adsorption capacity of NTMP on Fe 3 O 4 , FeOOH and Fe 2 O 3 were 4.14, 1.91 and 0.99 mg-P/g, respectively. Results implied the crystal structure and surface area of iron oxides determined the maximum NTMP adsorption capacity. The NTMP adsorption on the three iron oxides was spontaneous, endothermic and randomness increase. The iron oxides showed high selectivity towards NTMP adsorption in water containing anions, while the co-existing Ca 2+ and Mg 2+ remarkably increased the adsorption capacity. The successive adsorption-desorption cycles suggested a favorable reusability of the above iron oxides and a high NTMP desorption efficiency. The specific NTMP adsorption capacity followed the sequence of FeOOH > Fe 2 O 3 > Fe 3 O 4 , and was highly dependent on surface OH − proportion. The NTMP adsorption mechanism was mainly attributed to inner-sphere complexation. This study provides insights into the iron-based adsorbents design for selective phosphonate adsorption in the future.
研究领域:
环境科学
·
化学
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DOI
高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2023
·Vol. 70
·期 2
·159-170
·
IF 1.8
Wenju Zhu,Mingyang Yang,Qing Wang,Xiaohan Zhang,Dongxiang Li,Zelong Xu,Shuixia Liu,Zhao Dai
The chelating ligands of boric acid and amino trimethyl phosphonate prepared a novel flame retardant (BAP) for the cotton fabric. A stable chemical and coordination bond was formed on the surface of the cotton fibers by a simple three-curing finishing process to make the fabric exhibits excellent durable flame retardancy. Cotton fabrics' tensile strength and whiteness got substantially retained after BAP treatment. 90 g/L BAP-treated samples (3 curing times, 50 laundry cycles) showed good flame retardancy and durability, holding the largest limit oxygen index, 29.7%, and the shortest damage length, 61 mm. A condensed phase and gas phase synergistic flame retardant mechanism was concluded by thermogravimetric, cone calorimeter tests, and thermogravimetric infrared analysis.
研究领域:
材料科学
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纺织工程
·
化学工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2014
·
IF 4.908
Yuning Zhao,Hao Yang,Hong Wu,Zhongyi Jiang
Hollow mesoporous silica submicrospheres (HMSS) are prepared with one-dimensional hexahedral mesopores regularly aligned along the radial directions of the silica shells. Both the outer and the inner surfaces of the mesoporous shells, as well as the mesopore walls are phosphorylated (PHMSS). Moreover, the lumen of PHMSS serves as accommodation for amino tris(methylene phosphonic acid) (ATMP) with large amount of phosphoric acid groups. Phosphorylated submicrospheres (PHMSS-ATMP) with multi-functionalities are thus prepared. After incorporating PHMSS-ATMP into chitosan (CS) matrix, the hybrid membranes were fabricated. The water uptake, anti-swelling properties and the proton conductivities are all enhanced. Particularly, the proton conductivities are considerably elevated and the highest proton conductivity is 9.4×10 −2 S cm −1 at 110 °C 100% RH for the membrane with 7.5 wt% of PHMSS-ATMP; the proton conductivities of CS/PHMSS-ATMP hybrid membranes at 80 °C and low humidity are increased by two orders of magnitude compared to the pristine CS membrane. The enhanced performance could be attributed to the proton conducting groups introduced by PHMSS-ATMP: –PO 3 H 2 groups are anchored on the surface of PHMSS-ATMP, and proton conducting channels could be formed by the mesopores of the silica shell, and the lumen could serve as acidic reservoirs.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
Sustainable Energy & Fuels
·
2022
·Vol. 7
·期 3
·727-734
·
IF 6.813
Xiaopeng Yue,Bingbing Fan,Xing Zhao,Yingying Yang,Shujie Qu,Qiang Zhang,Xin Sun,Peng Cui,Junfeng Ma,Meicheng Li
The performance of planar perovskite solar cells (PSCs) is closely linked to the charge extraction and transfer in electron transporting layers (ETLs). To achieve a good control of the photoelectric properties of TiO2 ETLs, we introduce amino trimethylene phosphonic (ATMP) acid into the chemical bath deposition (CBD) process of TiO2 films. ATMP can effectively control the crystal growth of TiO2 particles to get an optimized ETL with preferable band energy and surface topography, which is beneficial for the energy level alignment and interface contact between the ETL and perovskite active layer. Compared to the control devices, the open circuit voltage (VOC) of PSCs with ATMP–TiO2 is increased from 1.17 V to 1.19 V, achieving a higher average power conversion efficiency (PCE) of 24.10%. The enhanced performance of ATMP–TiO2 PSCs is attributed to suppressed defects and well-matched energy level alignment at the perovskite/ETL interface, efficiently facilitating charge carrier extraction and electron transport. This work sheds light on designing an efficient ETL by tuning the precursor solution with environmental and inexpensive modifiers toward PSCs exhibiting outstanding performances.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2022
·
IF 5.546
Quan Fang,Yuanyuan Zhan,Xu Chen,Rongkai Wu,Weijia Zhang,Yu Wang,Xujuan Wu,Yunlong He,Juanjuan Zhou,Bihe Yuan
A bio-based intumescent flame retardant (IFR) was designed and synthesized by employing a simple and environment-friendly strategy. Via electrostatic interaction, chitosan (CS) and amino trimethylphosphonic acid (ATMP) as organic shells are deposited on the inorganic core of ammonium polyphosphate (APP) to form the core–shell flame retardant (APP@CS@ATMP). Then, agar (AG) is used as a charring agent candidate that combines with APP@CS@ATMP to fabricate a bio-based IFR. The application of APP@CS@ATMP and AG in polylactic acid (PLA) is effective in improving its flame retardancy and anti-dripping properties. The PLA composite including 20 wt% APP@CS@ATMP/AG (APP@CS@ATMP:AG = 3:1) can achieve the optimal flame-retardant effect and a UL-94 V-0 rating with a slight melt-dripping phenomenon. Furthermore, the peak heat release rate and total heat release significantly decrease in the cone calorimetric tests contrasted with those of pure PLA. The flame-retardant mechanism of APP@CS@ATMP/AG is revealed by analyzing the pyrolysis gaseous products during the thermal decomposition and the morphology and structure of char residues. This work provides a facile and sustainable route to construct bio-based polymer composites with excellent fire-safety properties.
研究领域:
材料科学
·
高分子化学
·
消防安全工程
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DOI
高影响因子
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
·
2025
·
IF 1.1
Cai C. L.,Fang X. H.,Ye H. D.,Zhang X. L.,Chen W. H.,Zhou A. X.,Chen F. Y.,Peng H. N.
Treatment of o -carborane with n -butyllithium, sulfur and CpCo(CO)I 2 in CH 2 Cl 2 at room temperature gives the half-sandwich 16e carborane complex CpCo[S 2 C 2 B 10 H 10 ], which reacts with PPh 2 Me, PPhMe 2 , PMe 3 to afford addition products CpCo[S 2 C 2 B 10 H 10 ]PPh 2 Me ( I ), CpCo[S 2 C 2 B 10 H 10 ]PPhMe 2 ( II ), CpCo[S 2 C 2 B 10 H 10 ]PMe 3 ( III ), respectively. I , II and III have been characterized by IR, 1 H NMR, 13 C NMR, 11 B NMR, elemental analysis, mass spectrum and single-crystal X-ray diffraction analysis (CIF files CCDC nos. 2394909 ( I ), 2394910 ( II ), and 2394908 ( III )).
研究领域:
无机化学
·
有机金属化学
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晶体学
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配位化学
·
硼化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhixin Su,Na Tao,Siren Li,Wenyong Jiang,Miaojia Pan,Hongyuan Zhang,Zhaoxu Wang,Hu Zhou,Tiefan Huang
MXene nanomaterials have emerged as promising materials for membrane design due to their distinctive chemical functionalities and tunable lamellar architecture. However, weak interlayer interactions between adjacent nanosheets often lead to membrane swelling and even redispersion in solvents, thereby compromising their performance in liquid separation. Although conventional crosslinking methods can alleviate these issues, they often cause an irreversible alteration of the interlayer spacing, which hinders precise molecular sieving. To address these challenges, we developed an in-situ disulfide crosslinking strategy for fabricating MXene membranes, in which chemical modification and crosslinking occur after membrane formation. As a result, the interlayer spacing of the crosslinked membrane remains virtually identical to that of the pristine membrane. Thanks to the crosslinked structure, the membranes maintain their structural integrity even under sonication. This well-defined microstructure enables size-selective molecular sieving capability. Moreover, leveraging the reversibility of disulfide bonds, the membrane exhibits excellent recyclability, achieving a nanosheet recovery rate of 88.4 %. This in-situ crosslinking strategy not only provides a sustainable pathway for advancing MXene-based membranes in water purification but also shows great potential for application with other two-dimensional materials to prepare high-performance membranes.
研究领域:
材料科学
·
纳米科技
·
膜分离技术
·
水处理
·
高分子化学
·
界面化学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Qing-Ling Cao,Wen-He Zhong,Jie-Yu Zhu,Cai-Hong Shi,Jia-Jia Zhao,Li-Zhuang Chen
Organic–inorganic hybrid metal halides have emerged as promising luminescent materials owing to their structural tunability and exceptional photoluminescence modulation capabilities, showing great potential in optoelectronic applications. Herein, we report the successful design of a novel series of zero-dimensional (0D) Mn(II)-based organic–inorganic hybrid halides with enhanced photoluminescence quantum yields (PLQYs) through strategic organic cation engineering. Specifically, in this paper, the methyl group (–CH3) at the fourth position of the benzene ring in the organic cation was replaced with hydrogen (–H) and cyano (–CN) groups. The average distance of Mn⋯Mn was successfully adjusted from 8.925 Å to 8.970 Å and 8.986 Å, and the PLQY was modulated from 35.74% to 59.04% and 81.38%. This work establishes a new paradigm for rationally designing high-performance luminescent materials through molecular-level structural engineering, providing valuable insights for developing advanced optoelectronic devices in sensing, information encryption, and radiation detection applications.
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DOI
PubMed
高影响因子
Nature Synthesis
·
2025
·
IF 20
Wang Ruizhao,Dai Jie,Zhao Long,Hu Zhiwei,Chen Chien-Te,Kuo Chang-Yang,Zhan Guangming,Shi Yanbiao,Wang Jiaxian,Zou Yunjie,Xu Mingkai,Zou Xingyue,Zheng Qian,Zhou Bing,Wang Kaiyuan,Zhao Rui,Zhang Yan,Shen Yunhao,Yao Yancai,Zhang Lizhi
Electrochemical O 2 activation offers a green approach for efficient synthesis of singlet oxygen ( 1 O 2 ). However, it is commonly determined by adsorption-dependent O 2 activation and transformation and can suffer from the sluggish desorption of surface-bound *OOH. Here we report an adsorption-independent O 2 activation pathway for 1 O 2 electrosynthesis via an O 2 mono-hydrogenation process on compressive-strained rutile TiO 2 (CSR-TiO 2 ). This CSR-TiO 2 achieved an 1 O 2 generation rate of 148.26 μmol l −1 min −1 with near 100% Faradaic efficiency, outperforming the strain-free counterpart (35.97 μmol l −1 min −1 ) and other previously reported materials. Such superior performance of CSR-TiO 2 stemmed from compressive strain, which can suppress the formation of reductive unsaturated sites for the O 2 adsorption and enhance the reductive ability of atomic hydrogen (H*), favouring the O 2 mono-hydrogenation pathway and bypassing the traditional surface-bound *OOH desorption pathway. The generated 1 O 2 could be utilized for the selective oxidation of thioanisole and its derivatives, offering a promising strategy for green organic synthesis.
研究领域:
材料科学
·
电化学
·
绿色合成
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Jiawei Lv,Cheng Zeng,Richao Shen,Shuangyu Dong,Yong Li,Sanbao Wang,Hongting Fan,Haowen Huang,Ziqiang Lei,Hengchang Ma,Zhiwang Yang
Quaternary ammonium and phosphoniums compounds have been widely used as two important classes of antimicrobial agents worldwide. However, an over-reliance and misuse of the limited antimicrobial agents has driven the development and spread of resistance to these materials. Thus, how to overcome the growingly increased drug resistance to modern public health becomes a challenging work. In this work, we compiled two modules of photosensitizers and quaternary phosphonium blocks into materials’ networks by co-polymerization method, resulting in the desired antimicrobial materials with reactive oxygen species (ROS) generation capability and high affinity with the negatively charged bacteria membranes, this synergistical effect can make ROS to destroy bacteria membranes within an effective migration distance. As a result, Poly(TPAs-2&P+-4) was optimized as an promising one, which demonstrated superior bacteria killing andimaging abilities against to four bacteria lines as E. coli, Methicillin-resistant S. aureus, E. faecalis and P. aeruginosa. The minimum inhibitory concentration (MIC) was determined as 75 μg/mL for E. coli, Methicillin-resistant S. aureus; and 150, 350 μg/mL for E. faecalis and P. aeruginosa respectively.
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DOI
PubMed
高影响因子
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