JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Hongxiang Xu,Wentao Li,Junfeng Wang,Jiushuai Deng,Shangqing Chen
After the NaClO solution was used to purify acetylene gas, the solution contained significant amounts of NaCl, Na2SO4, and Na2HPO4. The phase equilibrium data is the most important basic information for recovering sodium salts. In this study, the solubilities and dry-salt phase diagram for the system (Na+//Cl–-SO42–-HPO42–-H2O) were systemically studied. The dry-salt phase diagram contained one invariable point, three univariate solubility curves, and three single salt crystallization regions corresponding to NaCl, Na2SO4, and Na2HPO4·12H2O at 298.15 K and 0.1 MPa. Based on the ELEC-NRTL and Pitzer model embedded in the Aspen Plus, the phase equilibrium data for the ternary subsystem (Na+//Cl–-SO42–-H2O, Na+//Cl–-HPO42–-H2O, and Na+//SO42–-HPO42–-H2O) at 298.15 K and 0.1 MPa taken from the literature were first predicted to verify the applicability of parameters from the default database and literature. Subsequently, the models were optimized by literature solubility data, and then, the obtained parameters can well predict the phase equilibrium data for the ternary subsystem at 298.15 K and 0.1 MPa. All of these will provide basis data for the separation of sodium salt from the Na+//Cl–-SO42–-HPO42–-H2O system.
研究领域:
化学工程
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环境科学
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高影响因子
CHEMICAL PHYSICS LETTERS
·
2024
·
IF 2.8
Shi-Yu Ma,Jin-Kai Li,Zong-Ming Liu
In this paper, CsPbX 3 @SiO 2 (X = Cl, Br) with cubic morphology and stable optical properties have been developed. The average thickness of the SiO 2 shell is 2 ∼ 6 nm, which has the effect of protecting CsPbX 3 and isolating the external environment, passivating the surface and reducing the defect density, thus greatly improving the stability of CsPbX 3 PQDs. Based on this, the advantages of APTES as a preparation system CsPbX 3 @SiO 2 is revealed, the mechanism diagram is drawn and the stability improvement mechanism CsPbX 3 @SiO 2 is analyzed in detail, which provides a new idea for the stability improvement of CsPbX 3 perovskite quantum dots.
研究领域:
材料科学
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化学工程
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2026
·
IF 1.7
Li Shiyu,Fu Chengyun,Zhou Duo,Tian Qiang,Henderson Mark Julian,Zhu Shan,Yan Minhao
The adsorption of Sr 2+ and Cs + onto Gaomiaozi bentonite colloids (GMZC) was investigated to evaluate their role in radionuclide migration. The results show that within a concentration range of 20–100 mg·L⁻ 1 for Sr 2+ and Cs + , the distribution coefficient decreases with increasing ion concentration. The mechanistic study indicates that the adsorption of Sr 2+ is predominantly governed by surface complexation, whereas that of Cs + is mainly driven by ion exchange. Furthermore, Sr 2+ induces structural ordering of GMZC layers and promotes particle aggregation. However, in Na-Cl-SO 4 groundwater, the bentonite suspension showed poor stability and a significantly weakened adsorption capacity for both 90 Sr and 137 Cs, demonstrating the decisive impact of water chemistry on its barrier function.
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Polymers
·
2026
·Vol. 18
·期 5
·
IF 5.8
Weifang Yang,Wei Li,Tian Chen,Lu Wang,Yingying Sun,Jing Zhang,Keyong Tang,Ying Pei
The exceptional mechanical strength and toughness of collagen arise from its well-defined hierarchical architecture. Conventional methods for obtaining collagen aggregates (CAs), such as direct extraction from native tissues or acid swelling followed by mechanical processing, offer limited control over dimensional uniformity and provide little insight into the underlying exfoliation mechanisms. To overcome these challenges, this study introduces a novel strategy that leverages insights into the hierarchical interactions within collagen. We employ the ionic liquid 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) as an exfoliating agent to successfully isolate fibrous CAs from native bovine tendon. By precisely modulating temperature and processing time, we achieve CAs with tunable mesoscale dimensions (diameter 0.9–1.1 μm, length > 160 μm). Molecular dynamics simulations reveal that [AMIM]Cl disrupts the intramolecular hydrogen-bonding network within collagen, thereby facilitating controlled exfoliation. These exfoliated aggregates serve as fundamental building blocks for fabricating collagen films. The resulting materials exhibit robust mechanical integrity, high transparency, reversible pH-responsive behavior, and excellent biocompatibility as verified by cytotoxicity assays, which together underscore their potential as versatile biomaterial platforms. Furthermore, the integration of single-walled carbon nanotubes yields conductive composites with confirmed electrical functionality. This study thus presents an innovative pathway for the precision processing of collagen and advances the design of high-performance collagen-based biomaterials.
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PubMed
高影响因子
Science China-Chemistry
·
2025
·
IF 9.7
He Yueyue,Wu Shufang,Li Xiaofei,Zhang Xian-Ming,Fu Dongying
Non-covalent interactions play an indispensable role in the construction of molecular ferroelectrics, as they can regulate the relative orientation and stacking mode between molecules. However, the difficulty and challenge lie in precisely designing and regulating the weak intermolecular interactions, ultimately generating macroscopically reversible spontaneous polarization through synergistic effects, thereby achieving ferroelectricity. Herein, we introduced halogenated ammonium Cl-PA + (Cl-PA + is 3-chloropropylaminium) to regulate non-covalent interactions in the structure of hybrid perovskite, and constructed a photoferroelectric semiconductor (Cl-PA) 2 PbCl 4 with large piezoelectric coefficient ( d 33 = 27.4 pC/N) and high Curie temperature ( T c = 353 K) through the synergistic effect of hydrogen bonding and halogen-halogen interactions. Compared with non-ferroelectric (PA) 2 PbCl 4 (PA + is n -propylaminium), the severe distortion of PbCl 6 octahedra, weakened N–H···Cl hydrogen bond between organic cations and inorganic frameworks, enhanced C–H···Cl hydrogen bond between cations, and the additional Cl···Cl interaction in the structure synergistically induce the ferroelectricity of (Cl-PA) 2 PbCl 4 . In addition, the large dipole moment of Cl-PA is also beneficial for constructing molecular ferroelectrics, and the synergetic effect of non-covalent interactions in (Cl-PA) 2 PbCl 4 provides the possibility for dipole flipping and symmetry breaking. Therefore, constructing molecular ferroelectrics through the synergistic effect of non-covalent interactions essentially utilizes dynamic coupling and precise equilibrium of multiple weak interactions to achieve the formation, stability, and external field flipping of spontaneous polarization. Through this collaborative design, ferroelectrics with high spontaneous polarization ( P s ), low coercive field, and wide temperature range can be achieved, which opens up new directions for flexible electronics and energy storage.
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INORGANIC CHEMISTRY
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2022
·
IF 5.436
Jingfang Zhou,Rukang Li
A proton-rich POM-type molybdenum phosphate K12Mo8O20(HPO4)8(PO4)Cl was successfully obtained. It crystallizes in a noncentrosymmetric tetragonal space group of P–4 (No. 81) with the unit cell parameters of a = 9.6580(4) Å, c = 14.2607(10) Å, and Z = 1. The occurrence and positions of the light element H in the structure are inferred from single-crystal X-ray diffraction and confirmed by DFT calculations. The hydrogen atoms are found to form hydroxyl bonds with O atoms from P(2)O4 and P(3)O4 constituting the [Mo4P4O26H4]4– layers but are only weakly bound to the isolated P(3)O4 group through hydrogen bonds. The title compound presents a POM-type framework of corrugated [Mo4P4O26H4]4– layers with four K+ ions and mixed ions (K4Cl3+ and isolated PO43–) orderly imbedding in the interlayer spaces with distances of 5.0396 (1) and 5.5966 (3) Å, respectively. The proton-rich nature and the structure feature were further verified by a series of experiments including 1H, 7Li, and 31P MAS NMR spectra, IR spectroscopy, and thermal analysis. Moreover, the weak bonding and large interlayer spaces make K+ and H+ ions susceptible to exchange with ions of Cs+, Ba2+, Zn2+, Pb2+, Cu2+, and Ni2+ commonly presented in chemical pollutants or nuclear wastes. In addition, the title compound shows a small second-harmonic generation signal, consistent with its noncentrosymmetric structure.
研究领域:
材料科学
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化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Xu Liu,Jingzhe Li,Zewang Liu,Guang-zai Nong
The interfacial tuning of carbon materials is paramount to enhancing capacitive performance. Heteroatom doping significantly alters carbon materials' structural, electronic, and surface properties, improving their electronic conductivity and ion transport pathways. This process also introduces additional energy storage sites and improves structural stability to meet the requirements of advanced electrochemical energy storage systems. A N/Cl co-doped porous carbon material has been synthesised in this study. The material has a surface area of 1849.778 m 2 /g and a specific capacitance of up to 324 F/g at 0.5 A/g. Capacitance retention was as high as 89.69 % after 5000 cycles at 10 A/g. Furthermore, a symmetric supercapacitor based on BC121–800 exhibits an energy density of 11.6 Wh/Kg at a power density of 250.4 W/Kg. This study contributes novel strategies to enhance energy storage technologies.
研究领域:
材料科学
·
电化学能源存储
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lin-Chao Yang,Quan Zhou,Jin-Qiu Liu,Zhuo Wang,Yue-Chan Song,Wen-Wen Wu,Peng Liu
Extensive studies on TiO 2 -based colossal permittivity (CP, dielectric constant ε’ >10 3 ) materials have focused on the cation doping of metal elements; however, little attention has been paid to nonmetallic dopants. Compared to metallic elements, nonmetallic atoms with small radii and high activities, such as H, C, B, and N, can be used as anion-doping elements. Their incorporation into the TiO 2 lattice includes interstitial and substitutional doping, which can influence the bandgap of TiO 2 and its electron transport performance differently, thereby exhibiting considerable potential in TiO 2 -based applications. In this study, different N-containing compounds (BN and NH 4 Cl) were doped into rutile TiO 2 , while homogeneous ceramics of single-phase rutile TiO 2 were prepared via solid-state sintering. The effects of co-doping N, Cl, and N, B on the dielectric properties of rutile TiO 2 ceramics were investigated. While N and Cl doping showed no considerable effect on the dielectric properties of rutile TiO 2 ceramics, the co-doping of N and B doping in rutile TiO 2 considerably increased the dielectric constant to >10 4 with suppressed tan δ in a wide frequency range from 1 kHz to 10 MHz. These ceramics exhibited excellent frequency stability (up to 100 MHz) and temperature stability (153–513 K), which outperforms most reported transition metal co-doped TiO 2 ceramics, thereby highlighting the untapped potential of the non-metallic dopants in enhancing dielectric materials.
研究领域:
材料科学
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电子工程
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2020
·
IF 6.155
Haonan Cao,Meiqi Yu,Long Zhang,Zhaoxing Zhang,Xinlin Yan,Peng Li,Chuang Yu
Solution-synthesis method is attractive for solid electrolytes because it is a facile and scalable process to be used to permeate electrodes and to construct a thin electrolyte coating layer on active materials. In this work, we report Cl-doped Na 3 SbS 4 prepared via aqueous-solution approach. Besides decent ionic conductivity , the aqueous-solution approached electrolyte demonstrates an improved interfacial stability toward Na metal compared to the solid-state sintered one because of the residual hydrate, nanosized microstructure, and Cl incorporation. All-solid-state batteries using the solution-prepared electrolytes have enhanced cycling performance, though the performance still needs to be further improved.
研究领域:
材料科学
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电化学
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储能
·
固态电池
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Shaohai Wu,Chengyan Liu,Zhengsen Wu,Lei Miao,Jie Gao,Xiaokai Hu,Junliang Chen,Yanyan Zheng,Xiuxia Wang,Chengjin Shen,Hengquan Yang,Xiaoyuan Zhou
SnSe 2 is regarded as an attractive thermoelectric material for its structural and chemical analogy to SnSe that is claimed with the highest ZT in single crystal. In this study, the pure and Cl-doped SnSe 2 polycrystals (3%, 6%, 9% and 12% molar Cl content) were fabricated in four steps that are hydrothermal synthesis , heating purification, diffusion doping, and spark plasma sintering . The phase structure, lamellar morphology and crystallite orientation were studied for the synthesized SnSe 2 powder and the sintered pellets. The structural evolution was traced from the SnSe 2 hexagonal plates of powders to the (001) oriented grains in pellets. The Cl doping into SnSe 2 was verified by phase composition, lattice parameter , element distribution, and chemical valance. The doped Cl increased both the carrier concentration and the mobility. The anisotropic thermoelectric properties of SnSe 2 bulk materials were investigated as functions of temperature from 50 °C to 300 °C and the doping amount, respectively. The Seebeck coefficient was less anisotropic than the electrical and thermal conduction . The grain orientation influenced the anisotropy of the electrical and thermal conductivity at a similar ratio. The power factors were less dependent on temperature with an optimum in-plane 1.06 mW m −1 K −2 and out-of-plane 0.41 mW m −1 K −2 . The highest ZT s of 0.3 were attained at 300 °C in both directions.
研究领域:
材料科学
·
热电材料
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高影响因子
INORGANIC CHEMISTRY
·
2016
·
IF 4.82
Qing Sun,Guanyun Zhang,Chen-Ho Tung,Yifeng Wang
Herein we report the syntheses and the X-ray structure of [Cs8X27]19- (X = Cl, Br) clusters, the first binary cluster anions isolated in bulk crystal structures. They were obtained by electrostatic capture and face-directed recognition of the prenucleation [CsmCln](n−m)– clusters from water solutions, using [M4(OH)8(OH2)16]8+ (M = ZrIV or HfIV) as the counter cations. These compounds have been thoroughly characterized with a variety of techniques including vibrational spectroscopy and superionic conductivity analysis. This work not only provides structural models for a better understanding of the nucleation of binary materials but also shows that magic number binary clusters adopting a cubic lattice structure do form, in agreement with the time-honored theoretical and spectroscopic predictions.
研究领域:
无机化学
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材料科学
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晶体学
·
纳米技术
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PubMed
高影响因子
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 29
·9845-9849
·
IF 4.099
Daqin Chen,Xiao Chen,Junni Li,Xinyue Li,Jiasong Zhong
The preparation of CsPbX3 nanoplatelets and the investigation of their optical properties have been rarely reported. Herein, the successful development of all-inorganic CsPbX3 (X = Cl, Br, or I) perovskite quantum dots has been achieved and their unique optical and electrical properties are discussed. Apre-dissolution assisted solvothermal reaction was developed to synthesize ultrathin (∼3 nm) CsPbBr3 nanoplatelets with strong exciton absorption, with a 0.41 eV blue-shifted emission relative to that of CsPbBr3 nanocrystals and a high quantum yield of 28%. Anion exchange allowed the variation of the halogen content of the nanoplatelets and allowed them to retain their shape and size and achieve multi-color emission.
研究领域:
材料科学
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纳米技术
·
光学
·
化学
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PubMed
高影响因子
危险品化学品经营许可证（带存储）