CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Wen Wang,Liqiang Qi,Song Han,Hejin Yuan
A new chitosan-trithiocyanuric composite (CS@TMT) was synthesized by graft copolymerization using chloroacetyl chloride as the cross-linking agent. Using response surface analysis, the optimal conditions for the synthesis of CS@TMT were determined as: chloroacetyl chloride concentration of 2.0 mol/L, trithiocyanuric acid (TMT) addition of 7.0 g, and reaction temperature of 70 °C. The successful preparation of CS@TMT was confirmed FTIR spectrum, 13C NMR spectrum, SEM mapping, EDS, XRD and XPS. At ambient temperature (25 °C, pH=6.0, Catalyst dosage=1.0 g/L), the maximum Cr(VI) and Pb(II) adsorption amount of CS@TMT were 194.76 and 101.39 mg/g, respectively, compared to CS (97.15 and 69.76 mg/g). The Cr(VI) and Pb(II) removal process of CS@TMT was better fitted by the pseudo-second-order kinetic model and Langmuir model, and the adsorption process was spontaneous, endothermic and disordered. Under the reduction mechanism, 69.32% of Cr(VI) was reduced to Cr(III) by -SH and –OH group on CS@TMT.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2018
·
IF 4.358
Guo Lin,Shixing Wang,Libo Zhang,Tu Hu,Song Cheng,Likang Fu,Chao Xiong
A novel trithiocyanuric acid-modified corn bract (TCA-CCB) was prepared, and its removal properties for Hg 2+ were investigated. TCA-CCB showed a remarkable absorbability for Hg 2+ in mixed ion solutions. Adsorption kinetics experiments indicated that the removal of Hg 2+ on TCA-CCB was quick, with a removal rate of 99.07% within 5 min. In addition, the removal rate of Hg 2+ exceeded 98% over all pH conditions. The adsorption process can be best described by pseudo-second-order kinetic and Hill isotherm models. The saturated adsorption capacity of TCA-CCB for Hg 2+ was 390 mg/g. The TCA-CCB could efficiently adsorb Hg 2+ from the simulated wastewater and reduce the Hg 2+ concentration from 10 ppm to 12.35 ppb, which was lower than the greatest allowable value of 50 ppb and satisfied the emission standards required by the Chinese government. Moreover, the removal rate of Hg 2+ was beyond 99% after three cycles. The results of the zeta potential and X-ray photoelectron spectroscopy (XPS) implied that the chelation and ion exchange between amino/thiol groups and Hg 2+ played a significant role in the improvement of the adsorption properties. The corn bract modified by trithiocyanuric acid exhibits apparent advantages in the removal of Hg 2+ from ppm to ppb due to its high selectivity , adsorption capacity and stability.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2017
·Vol. 7
·期 85
·53977-53983
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IF 3.108
Qin Sun,Liang Yang,Lei Su,Weikang Liu,Yifan Wang,Shaoming Yu,Changlong Jiang,Zhongping Zhang
Precise control of the size, shape, and composition of nanocrystals will be required to fully explore and utilize unique properties of nanomaterials with a broad range. In this manuscript we have designed colloidal QD chains, using carboxyl-modified red fluorescent cadmium telluride (CdTe), which were self-assembled by the mediation of trithiocyanuric acid (TTCA). Furthermore, a ratiometric fluorescent sensor with dual-emissions was constructed by mixing the QD chains with blue fluorescent carbon dots (CDs) for the visual ultrasensitive detection of As(III) in environmental water. In the process of As3+ detection, it could react with the third sulfydryl, which resulted in the agglomeration of QD chains and quenching of the red emission of the QDs, while the blue fluorescent CDs were insensitive to the analyte. So the variation of fluorescence intensity ratios produces an obvious change of the fluorescence color from fushia to blue, which can be conveniently observed by the naked eye under a UV lamp without any complicated instrumentation. The LOD of this ratiometric fluorescent probe could reach as low as 1 ppb, which is much lower than the maximum level of 10 ppb As3+ in drinking water stipulated by WHO. Following the sensing mechanism, a paper-based sensor has been prepared by printing the ratiometric probe on filter paper, which provides a convenient and simple approach for the visual detection of As3+. Therefore, the very simple and effective strategy reported here could be extended to the visual detection of a wide range of analytes in the environment by the construction of highly efficient ratiometric nanoprobes.
研究领域:
纳米材料科学
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环境分析化学
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生物传感
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2018
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IF 4.513
Chao Xiong,Shixing Wang,Libo Zhang,Ying Li,Yang Zhou,Jinhui Peng
The poly (glycidyl methacrylate) microsphere was modified with trithiocyanuric acid to achieve selective adsorption of silver ions from aqueous solutions. X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR) were used to characterize the microsphere. In this study, the effects of pH, initial silver ions concentration and contact time on silver ions adsorption, reusability and selectivity of the microsphere were investigated. Experimental results showed that the removal rate of silver ions reached 96.40% under pH 5, the adsorption equilibrium time was about 14 h and the maximum adsorption capacity was 217.17 mg/g at pH 5. Besides, the microsphere has an excellent selectivity for silver ions among Zn(II), Ni(II), Co(III) and Ge(IIII). The adsorption isotherm of Ag + on T-PGMA fitted the Langmuir isotherm model well and the adsorption kinetics followed the pseudo-second-order model, suggesting that the main adsorption is chemical monolayer adsorption. Moreover, the microsphere has a high reusability and the absorbability was slightly decreased from 96.29% to 94.01% after four cycles. All the experimental data indicated that the microsphere is very promising for silver ions adsorption from aqueous solutions.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
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2019
·Vol. 9
·期 69
·40546-40552
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IF 3.049
Zhiming Chen,Jiaojiao Song,Qingpeng Zhu,Zhiguo Li,Renchun Yang
Core–shell magnetic Fe3O4@PVBC–TMT (Fe3O4@polyvinylbenzyl chloride–trithiocyanuric acid) nanoparticles containing trithiocyanuric acid groups were fabricated and employed for the fast removal of heavy metals from an aquatic environment. The morphology, structure and properties of Fe3O4@PVBC–TMT nanoparticles were characterized by a series of modern analytical tools. The adsorption behavior of the Fe3O4@PVBC–TMT nanoparticles for heavy metals ions in aqueous solutions was investigated by batch experiments. The maximum removal capacities of the Fe3O4@PVBC–TMT nanoparticles toward Mn2+, Ni2+, Cu2+, Cd2+ and Pb2+ ions were 127.4, 146.6, 180.5, 311.5, and 528.8 mg g−1, respectively. Importantly, it is found that Pb2+ ions can be completely and quickly removed by the Fe3O4@PVBC–TMT nanoparticles. The equilibrium was established within 6 min, and the removal efficiencies were found to be 99.9%, 99.8% and 99.5% for Pb2+ ions at the initial concentrations of 100 mg L−1, 200 mg L−1 and 300 mg L−1, respectively. It is hoped that the core–shell magnetic Fe3O4@PVBC–TMT nanoparticles may find application in wastewater treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
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2019
·
IF 5.162
Ziyang Jia,Hongzhang Zhang,Ying Yu,Yuqing Chen,Jingwang Yan,Xianfeng Li,Huamin Zhang
Lithium–sulfur (Li–S) batteries have great potential as an electrochemical energy storage system because of the high theoretical energy density and acceptable cost of financial and environment. However, the shuttle effect leads to severe capacity fading and low coulombic efficiency. Here, graphitic carbon nitride (g–C 3 N 4 ) is designed and prepared via a feasible and simple method from trithiocyanuric acid (TTCA) to anchor the polysulfides and suppress the shuttle effect. The obtained g–C 3 N 4 exhibits strong chemical interaction with polysulfides due to its high N–doping of 56.87 at%, which is beneficial to improve the cycling stability of Li–S batteries. Moreover, the novel porous framework and high specific surface area of g–C 3 N 4 also provide fast ion transport and broad reaction interface of sulfur cathode, facilitating high capacity output and superior rate performance of Li–S batteries. As a result, Li–S batteries assembled with g–C 3 N 4 can achieve high discharge capacity of 1200 mAh/g at 0.2 C and over 800 mAh/g is remained after 100 cycles with a coulombic efficiency more than 99.5%. When the C–rate rises to 5 C, the reversible capacity of Li–S batteries can still maintain at 607 mAh/g.
研究领域:
材料科学
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电化学能源存储
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DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 15
·2204246
·
IF 27.8
Chuannan Geng,Wenjia Qu,Zhiyuan Han,Li Wang,Wei Lv,Quan-Hong Yang
The polysulfide shuttling and electrode structure destruction caused by heterogeneous conversion reactions are the fundamental causes of the poor reversibility of high-energy-density lithium–sulfur (Li–S) batteries. The most direct manifestation is the unsatisfactory low Coulombic efficiency (CE). Herein the importance of CE in evaluating Li–S batteries is highlighted and a remedy is presented for such low efficiencies by in situ coating lithium sulfide (Li 2 S), as the cathode, with polymerizable electrolyte additives, where trithiocyanuric acid trilithium salt (TTCA-Li) is employed for a typical demonstration. The involved reaction catalytically decreases the initial overpotential of Li 2 S, and the produced coating confines the shuttling of lithium polysulfides, thus inhibiting the redistribution of sulfur species and active sulfur loss upon cycling. The prototype full cell where the coated Li 2 S cathode couples with the Li anode has an extremely high CE of over 99.5%, while, in a Li-free cell, the Li 2 S cathode well matches the lithiated silicon anode in a low N/P ratio of 1.2. This approach shows its practicality and generality through a pouch cell demonstration with a practically high Li 2 S loading and the extension to elemental sulfur-based batteries by injecting the TTCA-Li additives into cycling cells.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2017
·Vol. 228
·期 8
·1-13
·
IF 1.702
Fu Likang,Zhang Libo,Wang Shixing,Peng Jinhui,Zhang Gengwei
Surface modification of the silica nanoparticles was performed using trithiocyanuric acid (TCA-SNPs) so as to enhance the adsorption of Ag + from aqueous solutions. The surface modification to the adsorbent was characterized by Fourier transform infrared spectroscopy, transmission electron microscope, and X-ray photoelectron spectroscopy. The Ag + adsorption capacity was found to increase with increase in the solution pH, with the optimal pH being 5.0. The Ag + adsorption isotherm was generated at 25 °C at the optimal solution pH and the maximum adsorption capacity was found to be 80 mg/g, significantly higher than the adsorption capacity reported for other adsorbents in literature. The increase in adsorption capacity was attributed to the presence of thiol groups on the surface of the modified adsorbents. Additionally, the adsorption kinetics was estimated at 25 °C, which indicated very high rates of adsorption initially, with rapid reduction in rate of adsorption with time. Both adsorption isotherms as well as the adsorption kinetics were modeled with popular models. The adsorption isotherm was found to match with the Langmuir model while the adsorption kinetics was found to match with the pseudo-second-order kinetic model. The adsorption-desorption cycles indicate the TCA-SNPs to be stable adsorption performance and retain high adsorption efficiency ensuring commercial adoption. A relatively low adsorption of other ions such as Mn 2+ , Cu 2+ , Ni 2+ , Co 3+ as compared to Ag + was ensured.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Xiaoying Gao,Jiarui Zhu,Jiahui Zhao,Lei Zhao,Ying Sun,Jiazhen Lin,Mengli Hu,Yunjia Liu,Shenghong Yang,Jian Liu
A cascade colorimetric detection of salivary D-amino acids (DAAs) holds promise for the preliminary screening diagnosis of gastric cancer. Pursuing metal-organic complexes with high peroxidase-mimic (POD-mimic) activity is crucial to enhance diagnosis efficiency. In this work, we developed a straightforward strategy in a “one-pot” process to modulate the POD-mimic activity of CuX-trithiocyanuric acid (CuX-TTCA) complexes. By adjusting the molar ratios of CuX (Cl, Br, and I) and TTCA during synthesis to modify the coordination configuration of Cu(I) in CuX-TTCA, we easily tuned their POD-mimic activities. Among them, CuCl-TTCA-2 with a feeding molar ratio of 2:1 for CuCl:TTCA exhibited remarkable POD-mimic activity attributed to its exposed catalytic active sites and efficient mass transfer ability during catalysis. Long-lived 1 O 2 was identified as the primary reactive oxygen intermediate. A highly sensitive and selective cascade colorimetric detection platform was developed for two typical DAAs associated with gastric cancer, namely D-proline and D-alanine, achieving limit of detection values of 1.1 and 0.8 μM, respectively. As a proof-of-concept application, our cascade detection platform demonstrated excellent specificity in distinguishing saliva samples between gastric cancer patients and healthy individuals. The outstanding selectivity and reliable outcomes from DAAs assay make our detection platform highly promising for preliminary screening diagnosis of gastric cancer and patient self-detection applications. Our straightforward strategy for tuning POD-mimic activity provides an in-depth understanding on structure-activity relationship in nanozymes, offering valuable opportunities to advance enzyme-mimic optimization for other potential applications.
研究领域:
生物化学
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医学诊断
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纳米酶研究
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2019
·
IF 4.018
Meng Li,Bo Wang,Xufei An,Zhiyong Li,Hongtao Zhu,Boyang Mao,David G. Calatayud,Tony D. James
A fluorescent sensor for the detection of trithiocyanuric acid (TCA) and Hg 2+ was developed based on competitive interactions: non-covalent stacking between g-C 3 N 4 and TCA vs coordinative interaction between TCA and Hg 2+ . Electrostatic simulations were used to evaluate the interactions and help describe the detection mechanism. Moreover, normalized 2D fluorescence contour plots have been used to understand the fluorescence phenomenon. When TCA was added into a g-C 3 N 4 nanosheet solution free of Hg 2+ , TCA interacted with g-C 3 N 4 nanosheets via hydrogen bonding and π-π interactions, resulting in fluorescence quenching of the g-C 3 N 4 nanosheets. However, upon the addition of Hg 2+ , the fluorescence of the TCA-g-C 3 N 4 nanosheet hybrid system was restored, due to coordination of Hg 2+ with TCA through the S atoms, breaking the TCA-g-C 3 N 4 stacking interaction. Our results provide a new approach for the design of multifunctional nanosensors suitable for the detection of environmental pollutants.
研究领域:
分析化学
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环境科学
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材料科学
·
纳米技术
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Xiaoying Wang,Yanqun Shan,Miao Gong,Xin Jin,liangrui Lv,Meng Jiang,Jun Xu
A novel electrochemical sensor for ochratoxin A (OTA) based on the hairpin aptamer (HA) and double report DNA was constructed successfully. In the work, HA was chosen as the OTA recognition element and immobilized on the gold electrode (GE) via Au-S. Au nanoparticles (AuNPs) labeled double report DNA (rDNA1 and rDNA2) were symmetrically hybridized with HA simultaneously. Compared to the single report DNA, the strategy can dramatically increase the amount of AuNPs on the electrode surface and the stability of the HA to prevent lodging. The signal amplification was further implemented by using trithiocyanuric acid (TCA) to aggregate the AuNPs. Thus, it was observed that the differential pulse voltammetry (DPV) response of AuNPs was significantly amplified via multiple signal amplification strategy. When OTA was present, the HA was specifically combined with OTA to form the OTA-HA complex, which caused double report DNA to detach from the electrode, resulting in the decrease of the DPV response. The proposed electrochemical aptasensor can sensitively detect low concentrations of OTA by monitoring the OTA-dependent DPV intensity change. Under the optimized conditions, it exhibited wide linear ranges from 1 pg mL −1 to 1 ng mL −1 with a low detection limit of 0.5 pg mL −1 . The work provides a new idea for the various mycotoxins and even other substances detection at trace level.
研究领域:
分析化学
·
食品安全
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生物传感器
·
毒理学
✓ 已验证
DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2023
·Vol. 17
·期 10
·1568-1580
·
IF 4.5
Sun Nan,Wu Qing,Jin Lifang,Zhu Zichen,Sun Jianhui,Dong Shuying,Xie Haijiao,Zhang Chunyan,Cui Yanrui
By using a two-step hydrothermal method and trithiocyanuric acid (TTCA), 2,4,6-trihydrazino-1,3,5-triazine (THT), and Fe 3 O 4 as raw materials, a spherical magnetic adsorbent polymer (TTCA/THT@Fe 3 O 4 ) was synthesized to achieve the efficient removal of Cr(VI) from wastewater. Under optimal adsorption conditions, the maximum adsorption capacity of TTCA/THT@Fe 3 O 4 for Cr(VI) can reach 1340 mg·g −1 . Notably, the removal efficiency can approach 98.9%, even at the lower concentration of 20 mg·L −1 Cr(VI). For actual wastewater containing Cr(VI), the Cr(VI) concentration was reduced from 25.8 to 0.4 mg·L −1 , a remarkable 20% lower than the current industry discharge standard value. A mechanism for the high adsorption performance of Cr(VI) on TTCA/THT@Fe 3 O 4 was investigated using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and density functional theory. It can be plausibly attributed to the formation of Cr/N and Cr/S coordination bonds. Additionally, surface electrostatic adsorption, reduction effects, and the spherical polymer structure increase the contact area with Cr(VI), maximizing adsorption. The synergistic effect of adsorption and reduction enhances the adsorption performance of TTCA/THT@Fe 3 O 4 for Cr(VI) and total chromium in water. The resultant polymer has a simple preparation process, excellent adsorption performance, easy magnetic separation, and promising application for actual wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）