CHEMOSPHERE
·
2019
·
IF 5.108
Yanming Jia,Tuokun Zhao,Nan Zhao,Hang Wei,Weihua Zhang,Rongliang Qiu
In natural environments, humic substances (HS) play a key role in the control of Cd stability by forming Cd-HS complexes. In this study, we investigated the influence of the photo-irradiation on the Cd levels remaining in Leonardite humic acid (HA) standard solution after chemical precipitation . The kinetic experiment showed that after the irradiation of ultraviolet light, especially UVC, Cd-HA complexes become more stable. The coexisting Cd in the HA solution under light irradiation seemed to enhance the stability of Cd-HA complexes. Both Fourier transform infrared and X-ray photoelectron spectrometric spectra indicated an increase in the thiol amounts in the HA samples treated by light irradiation. Therefore, we developed a fluorescent method to quantify thiol groups in HA with N-(1-pyrenyl) maleimide (NPM). The HA samples were initially spiked with known amounts of glutathione , the reference containing thiol groups, and then was titrated with various amounts of NPM. The measured thiol amounts in the HA treated by UV were found to significantly increase, and the increment was almost equivalent to those of Cd level in HA solution after chemical precipitation. Therefore, it was concluded that the increased thiol groups in HA induced by ultraviolet irradiation resulted in the formation of more stable Cd-HA complexes in solution.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2025
·
IF 1.7
Ji An-Lan,Ding Rui,Liang Xuan,Liu Xiao,Zhang Yu-Chen,Wang Yu-Han,Zhang Yu-Lin,Lei Ming-Di,Zhang Yi-Wen,Fu Jie,Wang Wei-Jie,Liu Jie
The corrosion inhibition performance of purine derivatives (PR, 6N-PR, 2N6N-PR, 2N6S-PR, and 2S6S-PR) on carbon steel in 1.0 M HCl was systematically investigated through electrochemical and quantum chemical approaches. For the first time, this study elucidates the critical role of thiol substituents over amino groups in enhancing inhibition efficiency, with 2,6-dimercaptopurine (2S6S-PR) achieving an exceptional inhibition rate of 85.24% at 0.001 mol/L. Electrochemical impedance spectroscopy (EIS) and polarization analyses revealed a mixed inhibition mechanism dominated by anodic passivation, while Langmuir adsorption thermodynamics ( \(\Delta {G}_{ads}^{\theta }\) = − 38.60 kJ/mol for 2S6S-PR) indicated physico-chemical synergistic adsorption. Quantum chemical calculations demonstrated that thiol groups exhibit higher reactivity than amino groups, with the 2-position substitution significantly enhancing π-electron density and planar adsorption activity. Notably, the energy gap (ΔE = 3.25 eV for 2S6S-PR) inversely correlated with inhibition efficiency, highlighting molecular instability as a key driver for strong metal-surface interactions. A novel quantitative structure–activity relationship (QSAR) model integrating HOMO, LUMO, and dipole moment parameters exhibited remarkable alignment with experimental data (R 2 > 0.99), providing a predictive framework for designing high-performance corrosion inhibitors. These findings bridge the gap between molecular structure and macroscopic inhibition behavior, offering a transformative strategy for sustainable acid corrosion protection.
研究领域:
材料科学
·
化学工程
·
理论化学
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2019
·
IF 2.284
Ning Tian,Yifang Dai,Qing Liu,Wei Dai
A general synthetic strategy for HS-Fe 3 O 4 @MIL-53(Al) adsorbent has been developed in this work. The composite material exhibits an efficient capture performance for rubidium ion due to sulfhydryl group and magnetic Fe 3 O 4 doped in its porous cavity. The results of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and N 2 adsorption–desorption proved that the HS-Fe 3 O 4 was immobilized in the composite material. High Rb + uptake capacity over the HS-Fe 3 O 4 @MIL-53(Al) is attributed to the exchange of acidic protons between the sulfhydryl group and the Rb + . The pseudo-second-order and Freundlich model could make a good description of the adsorption process. The Rb + sorption selectivity was moderately influenced by any co-ions effect (K + , Na + and Cs + ) due to HS-Fe 3 O 4 doped. These results reveal that our novel composite material might be a promising industrial adsorbent for Rb + capture.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Junhao Li,Jiawei Wang,Xinyu Yuan,Zhikun Wang,Shuangqing Sun,Qiang Lyu,Songqing Hu
At present, endocrine-disrupting chemicals (EDCs) and heavy metals (HMs) are increasingly polluting water. In this work, we prepared a sulfhydryl-rich β-cyclodextrin polymer (SH-CDP) for the adsorption of Pb 2+ and bisphenol A (BPA), as the representatives of HMs and EDCs, respectively. SH-CDP have excellent adsorption performance with theoretical maximum adsorption capacity of 604.65 mg/g and 287.88 mg/g for Pb 2+ and BPA, respectively. The adsorption process of Pb 2+ by SH-CDP reaches equilibrium quickly within 60 s because of chelation between Pb 2+ and sulfhydryl group, suggesting an ultra-fast adsorption rate. Since the adsorption sites of Pb 2+ and BPA by SH-CDP are independent, the adsorption performance is still favorable under the coexistence of Pb 2+ and BPA. Furthermore, SH-CDP maintains stable adsorption performance after five consecutive cycles. These results demonstrate that SH-CDP is a potential material capable of effectively treating HMs and EDCs in wastewater.
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
ANALYTICAL LETTERS
·
2025
·
IF 1.8
Li Zhang,Shuya Wang,Xuelian Liu,Zhiyong Guo,Chen Zhang,Xi Chen
Fluorescence sensing for Pb2+ was developed using the in-situ growth of CsPbBr3 nanocrystals on a flexible cellulose film for the determination of Pb2+. Sulfhydryl groups were introduced onto the cellulose film to improve the extraction efficiency of Pb2+. The fluorescence signal exhibited a linear response to the Pb2+ concentration from 0.1 to 1.0 µg mL−1 with a detection limit of 3.2 × 10−2 µg mL−1. The film could be used to direct Pb2+ on a solid surface. The approach eliminates complex sample pretreatment, offering simplicity, cost-effectiveness, and rapid response. Its semi-quantitative capability shows promise for on-site screening of Pb2+ on surfaces (e.g., toy, pencils).
研究领域:
分析化学
·
环境科学
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产品关联
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Qian Wang,Sining Zhu,Chen Xi,Binhai Jiang,Fan Zhang
In this study, the highly crosslinked hyperbranched polyamide-amines (H-PAMAMs) were first prepared via one-pot methods and then modified with thiourea to synthesize a novel adsorbent containing sulfhydryl groups (CHAP-SH), which was used to adsorb Hg(II) ions from aqueous solutions. The adsorption characteristics and mechanism of CHAP-SH for Hg(II) ions were systematically studied. As expected, CHAP-SH exhibited a rapid removal performance toward Hg(II), and the maximum adsorption capacity was 282.74 mg/g at 318 K and pH = 4.5. The whole adsorption behavior could be well described by the pseudo-second-order kinetic model and Langmuir and Redlich–Peterson adsorption isotherm models, which reflected that the adsorption process was mainly monolayer chemisorption. Meanwhile, CHAP-SH had strong selectivity for Hg(II) in the presence of multimetal ions, and it had excellent recoverability after five cycles. In order to further elucidate the adsorption mechanism, the adsorbents before and after adsorption were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, and energy-dispersive X-ray spectroscopy, and the results showed that the nitrogen-containing, oxygen-containing, and sulfur-containing groups in the adsorbent molecule had synergistic complexation with Hg(II). These results indicated that the adsorbents had great potential in the future treatment of aqueous solutions containing Hg(II).
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Xiaoyu Zhou,Xingzheng Peng,Xiaoyan Feng,Xuewu Gao,Mengke Li,Haifeng Ji,Guodong Liu,Yi Feng,Xiaojie Zhang
Aqueous zinc ion batteries (AZIBs) are hindered from extensive application due to the sluggish kinetics of hydrated zinc ions and cathodic dissolution, which leads to the deficiency of cycling performance in zinc ion batteries. This work elucidates a series of sulfhydryl-rich binding agents (STN, SON, and SSN). The sulfhydryl groups suspended by the binders interact with the cations in the electrolyte, facilitating the transport of Zn2+, enhancing redox kinetics, and improving the cycling stability of the cell. Additionally, the formation of dynamic S–S bonds after the oxidation of sulfhydryl groups further restricts the volume expansion in the cathode during charge and discharge cycles, ensuring structural stability. The STN binder exhibits the most optimal performance. The N-containing triazine ring interacts with Zn2+, while the sulfhydryl group forms a dynamic coordination bond with Zn2+, thereby enhancing the Zn2+ storage and promoting the Zn2+ intercalation. This dual function ultimately produces a synergistic effect to optimize the electrochemical performance of AZIBs. The initial specific discharge capacity of the cell with the STN binder is 123 mA h g–1 at 1 C multiplicity, which exceeds the 68 mA h g–1 capacity of the cell with the PVDF binder.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Fenglei Liu,Zhihao Li,Fang Xia,Baowei Hu
The efficient recovery of palladium from the spent nuclear fuel was of great significance to the sustainable development of nuclear energy. Herein, the uniform spherical COFs were constructed by a facile approach at room temperature, which were further surface functionalized by a thiol-ene “click” reaction to recover Pd(II). Microscopic and spectroscopic studies manifested that the formation mechanism and size of spherical COFs were greatly affected by the amount of catalyst and solvent type. The TAPB-BPTA-DTT and TAPB-BPTA-S-β-CD exhibited high Pd(II) recovery efficiency due to the introduction of sulfhydryl groups, and the maximum adsorption capacities were 489.3 and 234.3 mg/g, respectively. Meanwhile, the water environmental condition played an important role in the separation process, and the classical adsorption models demonstrated that monolayer chemisorption was the dominant removal mechanism. Mechanism analysis showed that the excellent adsorption performance was mainly attributed to the electrostatic interaction, physical absorption and chelation of N, O, and S groups with Pd(II). Thus, it is expected that this work could provide more insight into COFs materials, thereby promoting palladium removal advancements in the spent nuclear fuel.
研究领域:
材料科学
·
环境科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH INNOVATIONS
·
2024
·
IF 0
Xingbin Liu,Xuhui Li,Yongfeng Wang,Li Jiang,Qimin Jiang,Hongjun Yang,Zhichao Zhao,Wenyan Huang,Xiaoqiang Xue,Bibiao Jiang
Methacrylate functional monomers containing polymerisable double bonds and sulphhydryl group were synthesised using (methyl) hydroxyethyl (propyl) acrylate and mercaptopropionic acid as precursors with benzene (toluene, ethyl acetate, ether) as solvent and aqueous agent, p-toluene sulphonic acid as catalyst, hydroquinone as polymerisation inhibitor. The yield of methacrylate functional monomers was more than 90%. The structure and purity of methacrylate functional monomers was characterised by proton nuclear magnetic resonance (1H-NMR) and liquid chromatography–mass spectrometry (LC-MS). The precursor material source is of low cost and widely available, and the product did not need to be purified by a special method, which means that it can be directly used for the synthesis of vinyl branched polymer. Therefore, the price of vinyl branched polymer can be greatly reduced and the application range of vinyl branched polymer can be greatly expanded.
研究领域:
高分子化学
·
材料科学
✓ 已验证
产品关联
DOI
Nanoscale
·
2015
·Vol. 7
·期 13
·5767-5775
·
IF 7.394
Ping Wang,Jie Zhang,Haili He,Xiaolong Xu,Yongdong Jin
The use of colloidal semiconductor nanocrystals (NCs), especially those with a core/shell structure, for photocatalytic hydrogen (H2) production from water is currently one of the hottest research fields. Although the ligand on the semiconductor NC surface is crucial to the optical and optoelectronic properties of the NC, the study of the ligand effect on the photocatalytic activity of H2 generation is rarely reported. Herein, we employ nearly monodispersed CdSe/CdS core/shell NCs as a model photocatalytic system, and three kinds of ligands with different numbers of functional thiol groups (i.e., poly(acrylic acid), 3-mercaptopropionic acid and 2,3-dimercaptosuccinic acid) are selected as the ligands to investigate the effect of ligand on the efficiency of H2 photogeneration. The results show that the H2 photogeneration efficiency is highly dependent on the surface ligand of the NCs, and it increases with the increase of the number of the functional thiol groups in the ligand, and correspondingly, the photoluminescence intensity and average fluorescence lifetime, which are measured by steady state and time-resolved fluorescence measurements, are decreased. The surface trap-related charge separation efficiency, which is mediated by surface coating with different ligands, is supposed to cause the distinct ligand-dependent performance in the H2 evolution.
研究领域:
材料科学
·
光化学
·
纳米技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS
·
2023
·Vol. 55
·期 9
·503-524
·
IF 1.5
Xuan Liang,Yi-Heng Gui,Qing-Xian Yue,Rui Ding,Jie Liu,Hai-Bin Yu
Corrosion inhibitors could significantly reduce the corrosion effect of seawater on carbon steels, which were widely used in seawater cooling systems and seawater desalination systems. The corrosion inhibition properties of 1,3,4-thiediazole (TD) and 2-mercapto-1,3,4-thiadiazole (MTD) and their relationship with molecular structures were systematically studied by experimental and theoretical methods. TD and MTD were composite corrosion inhibitors with the higher proportion of cathodic corrosion inhibition, and their corrosion inhibition was based on the enlarged resistance of the electrochemical dissolution reaction of the iron. Their coverage on the surface of carbon steel and the negative movement of the potential they caused would promote each other and formed the stable adsorption. The mercaptol extended the distribution range of the negative electrostatic potential of MTD, reduced the spatial steric resistance of coordination and the energy gap of the frontier molecular orbitals, and raised the number of coordination transfer electrons, which made MTD exhibited superior corrosion inhibition performance than TD. The adsorption behavior of MTD was in line with the characteristics of Langmuir adsorption and was the combination of physical adsorption and chemical adsorption. Its adsorption form was laminated adsorption, and it was conducive to the formation of feedback bonds, which led to high stability of adsorption.
研究领域:
材料科学
·
电化学
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2025
·
IF 2.4
Fucheng Wang,Jiarui Liang,Yue Wu,Mei Li,Xian Zhang,Qiuhong Mu,Dan Peng,Zhizhou Yang
With the extensive utilization of nuclear energy, development of the efficient and low-cost adsorbent for the disposal of nuclear waste, especially for radioactive iodine pollutant has become increasingly significant. In this article, three kinds of novel hyper-crosslinked polymers, HCP-ATPs, were synthesized by using 4-aminothiophenol (4-ATP) and formaldehyde dimethyl acetal (FDA) as the building blocks. The resulting polymers were rich in both of thiol (–SH) and amino (–NH2) groups, possessing a high affinity for iodine molecules. Adsorption experiments revealed that HCP-ATPs possessed highly efficient adsorption of iodine whatever from iodine vapor, iodine in organic solutions and iodine in aqueous solutions despite that they did not display advantageous specific surface areas and pore volumes. This work provided a facile and cost-effective strategy to the synthesis of novel adsorbents for iodine adsorption.
研究领域:
高分子化学
·
环境科学
·
核工程
·
吸附技术
✓ 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）