APPLIED CLAY SCIENCE
·
2024
·
IF 5.3
Jing Jiang,Siyu Deng,Wenhao Kuang,Li Wang,Dong Chen,Yuhong Ma,Wantai Yang
Halloysite nanotubes (Hal) have drawn intensive attentions because of their unique nanotubular structure and large surface area. However, limited adsorption capacity and poor recyclability severely impeded their practical application for water remediation. Herein, to overcome the deficiencies of pristine Hal, we deliberately designed and prepared a series of anhydride and carboxylate functionalized Hal (Hal@PDM-COO − ) via self-stabilized precipitation polymerization. Owing to the merits of both nanotubular structure of Hal and high-density carboxylate ions in the shell layer, the Hal@PDM-COO − possessed a remarkable pH-dependent adsorption performance towards methylene blue ( b -MB). As the solution pH increased from 3 to 11, the sorption capacity increased remarkably from 179.1 to 459.1 mg/g. Furthermore, all sorption processes were better-fitted with pseudo-second-order and Langmuir models, exhibiting a maximum sorption amount of 302.1 mg/g at pH = 7. These results indicate that electrostatic attraction between positive b -MB molecules and negative carboxylate groups plays a dominant role during sorption process, and carboxylate groups distribute homogeneously in the shell layer of Hal@PDM-COO − . More importantly, Hal@PDM-COO − possessed outstanding recyclability, and the removal rate of b -MB kept >95% after five recycle runs. Considering the highly enhanced adsorption capacity, rapid adsorption rate and excellent reusability, the Hal@PDM-COO − showed significant potential for wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2020
·
IF 9.511
Linbao Guo,Jiangjian Shi,Qing Yu,Biwen Duan,Xiao Xu,Jiazheng Zhou,Jionghua Wu,Yusheng Li,Dongmei Li,Huijue Wu,Yanhong Luo,Qingbo Meng
Aqueous precursors provide an alluring approach for low-cost and environmentally friendly production of earth-abundant Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cells. The key is to find an appropriate molecular agent to prepare a stable solution and optimize the coordination structure to facilitate the subsequent crystallization process . Herein, we introduce thioglycolic acid (TGA), which possesses strong coordination (SH) and hydrophilic (COOH) groups, as the agent and use deprotonation to regulate the coordination competition within the aqueous solution. Ultimately, metal cations are adequately coordinated with thiolate anions , and carboxylate anions are released to become hydrated to form an ultrastable aqueous solution. These factors have contributed to achieving CZTSSe solar cells with an efficiency as high as 12.3% (a certified efficiency of 12.0%) and providing an extremely wide time window for precursor storage and usage. This work represents significant progress in the non-toxic solution fabrication of CZTSSe solar cells and holds great potential for the development of CZTSSe and other metal sulfide solar cells.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2016
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IF 2.567
Junhai Zhao,Shuhang Ren,Yucui Hou,Kai Zhang,Weize Wu
Task-specific ionic liquids (TSILs) have been widely observed to effectively absorb low-concentration SO2 from flue gas by chemical interaction. However, the interaction between SO2 and TSILs is still unclear. The addition of solvents can decrease the viscosity of TSILs and promote mass transfer, but whether the solvents have an impact on absorption is unknown, as is the effect on absorption mechanism. To solve these issues, we synthesized several types of TSILs containing carboxylate anion to capture SO2 from simulated flue gas. The mechanism of absorption of SO2 by the TSILs was investigated in detail using Fourier transform infrared (FT-IR), 1H nuclear magnetic resonance (NMR), and 13C NMR. The results show that chemical interactions can be found between the carboxylate anions of TSILs and SO2. Simultaneously, the effect of several solvents on SO2 absorption capacity of TSILs was studied. The results indicate that ethylene glycol (EG) in TSILs has a strong influence on SO2 absorption by guanidinium- and alkanolaminium-based TSILs, but for quaternary ammonium-based TSILs, EG has no effect. Finally, the interaction between EG and TSILs was investigated by FT-IR, and the absorption mechanism was studied. It has been found that the addition of EG can improve the basicity of guanidinium- and alkanolaminium-based TSILs to increase the absorption capacity.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Wenbo Sun,Dan Gao,Liru Cui,Feng Zhang,Zhijie Duan,Xuezhi Bao
Metal-organic gels (MOGs) are emerging as promising ion‐conductive materials due to their tunable porosity, structural flexibility, and high defect density. In this study, the ionic conduction properties of Zr-MOG and its LiCl-doped derivatives under anhydrous conditions have been investigated. Structural characterization via N 2 physisorption reveals that Li + doping reduces long‐range crystallinity and increases specific surface area, thereby facilitating the formation of interconnected ion-transport pathways. In situ infrared spectroscopy confirms the pivotal role of framework carboxylates (R–COO - ) and hydroxyls (R–OH) groups in coordinating Li + and enabling solid‐state ion hopping. Electrochemical impedance spectroscopy demonstrates a significant enhancement in ionic conductivity, with Li/Zr-MOG-3 achieving 1.54 × 10 −2 S cm −1 at 383 K under anhydrous conditions, 8-fold higher than pristine Zr-MOG. The low activation energy (0.12–0.21 eV), determined via Arrhenius analysis, indicate an efficient ion hopping mechanism in the absence of water molecules. These findings highlight the potential of defect‐engineered, humidity‐independent Zr-MOG as high‐performance solid‐state Li + electrolytes, and provide fundamental insight into the role of defect chemistry and functional‐group interactions in optimizing ion mobility.
研究领域:
材料科学
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电化学
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固态离子学
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2020
·Vol. 34
·期 8
·e5680
·
IF 3.14
Chunyan Jia,Yanwei Cong,Shaoping Pu,Linxiang Cai,Yunshuang Zhong,Xinzhong Zhang,Xiali Liao,Yamin Li,Bo Yang,Chuanzhu Gao
A series of mixed ammine/amine platinum(IV) complexes with lipophilic ligands in their axial positions were designed, synthesized, and spectrally characterized. In vitro cytotoxicity evaluation of these complexes and their lead compounds have been carried out against A549, SMMC-7721, MCF-7, and SW480 human cancer cell lines. The introduction of carboxylate ions as leaving group can improve the aqueous solubility and stability of the platinum(II) complexes. The carboxylato ligands and chloride ligands in the axial position markedly increased the lipophilicity and cytotoxicity of compounds C4 and C5. Particularly, compound C5 showed two to eight times higher cytotoxicity than cisplatin and satraplatin against selected cell lines. For its oral activity and no cross-resistance potentiality, C5 is expected to be an antitumor platinum drug candidate. This novel class of platinum compounds represents a valuable lead in the development of new-generation agents capable of demonstrating cytotoxicity superior to that of the clinically established cisplatin.
研究领域:
化学
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药学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Changkun Liu,Chaojie Cai,Fuqing Ma,Xinzhen Zhao,Hilal Ahmad
Solar-driven evaporation as a sustainable water purification technology exhibits great potential in solving the global water crisis. In this paper, a novel solar evaporator was successfully prepared with the reduced graphene oxide (rGO) and silver (Ag) nanowires as photothermal conversion media which were loaded into the sodium alginate (SA) hydrogel. It was found that the evaporation rate of the prepared evaporator reached 2.02 kg m −2 h −1 and the solar energy efficiency was 91% under one sun irradiation intensity. Furthermore, this novel solar evaporator exhibited expectant evaporation performance in the treatment of seawater and heavy metal sewage with excellent ion removal ability, with the removal efficiency of various ions higher than 99.9%. The ion-crosslinked SA hydrogel contained in the evaporator ensured the rejection of multivalent ions based on the distribution of carboxylate anions, and the three-dimensional porous channel of the super-hydrophilic hydrogel provided the convenient path for the transport of water molecules and the escape of water vapor. The binary composition of rGO and silver nanowires enhanced the photothermal conversion and the thermal conductivity , which was beneficial to the stable supply of thermal energy for evaporation. The purpose of this paper is to provide reference for promoting the practical application of solar evaporation .
研究领域:
水净化
·
可再生能源
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纳米技术
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环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xiaoyan Feng,Jiachen Li,Yaotian Peng,Wentai Guo,Lijun Liang,Linli Zhu,Sa Liu,Li Ren
It remains a challenge for commercial hemoperfusion adsorbents to efficiently remove multiple protein-bound toxins in the clinical treatment of liver and kidney failure. Here, polystyrene divinylbenzene microspheres (PS-DVB) were surface-modified by poly(carboxybetaine methacrylate) (poly-CBMA) through controlled polymerization, named PCBMA. PS-DVB served as a supporting backbone and provided enormous specific surface, while a layer of the poly-CBMA aimed at efficiently removing various toxins and attaining better biocompatibility. After modification, the mesoporous analysis revealed a high specific surface area of 527 m 2 /g. More notably, compared with PS-DVB, PCBMA showed an 830%, 130%, and 26% increase in the adsorption capacity of p-cresol sulfate (PCS), indoleacetic acid (IAA), and bilirubin (BR), respectively, in the presence of 40 g/L bovine serum albumin. Further molecular dynamics simulations and DFT calculations showed that poly-CBMA exhibited stronger intermolecular forces for all three toxins. The hydrogen bonds formed between the negatively charged carboxylate ions from PCBMA contributed to its excellent adsorption performance. This study not only provides a new idea to study the adsorption mechanism of toxins by zwitterionic polymers but also demonstrates the promising application of microspheres modified by zwitterionic polymers in clinical hemoperfusion therapy.
研究领域:
材料科学
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生物医学工程
·
计算化学
·
血液透析
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Mengyao Chen,Wenjing Qin,Yanli Wang,Yu Song,Fei Tian,Hanlin Zhai,Changshun Gu,Le Ge,Song Xue,Xinxin Li,Xiangchuan Zhao,Yixin Xu,Zeyu Ming,Shengrong Li,Shougen Yin
3D printing hydrogel shows a broad application prospect in soft actuator/robot and flexible electronics due to its adaptable structure and designable chemical composition. Herein, a Zr 4 + -deep eutectic solvent (DES)-PAAc hydrogel is developed via digital light processing (DLP) 3D printing technology. By synergistically integrating hydrogen bonding, Zr⁴⁺-carboxylate ionic coordination bonds, and electrostatic interactions between DES and PAAc chains, the hydrogel achieves a unique soft-hard phase-separated dual-network architecture. This design provides an internal energy dissipation-storage mechanism, endowing the hydrogel with exceptional mechanical robustness (maximum stress of 1.86 MPa), high conductivity (conductivity of 0.51 S/m), and cyclic compression stability (energy dissipation of 2.69 kJ m⁻³), thereby overcoming the trade-off between toughness and functionality in conventional hydrogels. Leveraging DLP 3D printing, the hydrogel is precisely tailored into complex architectures (e.g., bioelectrodes, impact-resistant structures). Remarkably, the hydrogel serves as a self-powered pressure-sensing electrolyte in Zn-Cu batteries and a weather-resistant bioelectrode for real-time monitoring of bio-signals. Furthermore, its tailored structures exhibit programmable impact resistance for delicate device protection. The combination of additive manufacturing and cross-domain functionality establishes a paradigm for hydrogels in wearable healthcare, soft robotics, and energy-autonomous sensing systems.
研究领域:
材料科学
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3D打印/增材制造
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柔性电子器件
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传感器
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能源存储
·
生物医学工程
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软体机器人
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高分子科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yao Xiao,Hai-Qin Lu,Chang-Rong Shi,Fu-Hou Lei,Darryn Rackemann,Kai Li,Wen Li,William O.S. Doherty
The decolorization of remelt syrup is the most critical step in the sugar refining process as it directly affects the quality of refined sugar. Adsorption is a useful method that can be applied to decolorize the syrup. A quaternary ammonium-functionalized chitosan/graphene oxide composite aerogel (GO-QACSA) was developed as an effective adsorbent for the removal of high-molecular-weight reducing sugar alkaline degradation products (HRSADPs), the main class of colorants in remelt syrup. The advantages of GO-QACSA to remove HRSADPs can be attributed to its well-connected 3-D network-like porous structure, nontoxicity, high hydrophilicity, and the richness of quaternary ammonium groups. The equilibrium adsorption capacity of GO-QACSA for HRSADPs reached 364.09 mg/g and the removal rate was > 90%. GO-QACSA exhibited an ultra-fast adsorption rate. Recycling experiments indicated that GO-QACSA exhibited good renewability and reusability. The interaction mechanism for the adsorption of HRSADP on GO-QACSA was studied, and the results revealed that two layers of HRSADPs adhered to the surface of GO-QACSA via electrovalent bonds formed between the quaternary ammonium and carboxylate groups. On average, 2–3 carboxylate ions in one HRSADP molecule bonded with the quaternary ammonium cations of GO-QACSA. Four phenomenological mathematical models, namely, External mass transfer resistance (EMTR), Internal mass transfer resistance (IMTR), combined EMTR–IMTR, and Adsorption on active sites (AAS), were presented based on the best-fit equilibrium isotherms. These models could be used to provide new insights into the adsorption mass transfer behaviors of the system.
研究领域:
材料科学
·
化学工程
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）