CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Bo Zhang,Ru Xiao,Liyuan Liu,Xiaobin Liu,Ying Deng,Qingliang Lv,Zexing Wu,Yunmei Du,Yanyan Li,Zhenyu Xiao,Lei Wang
Although the intermittent energy-driven direct seawater splitting technology provides an unparalleled approach to achieving sustainable development, the severe corrosion via aggressive Cl – severely affects the stability and efficiency of the anode catalyst and limits its industrial application. Herein, a lattice Cl – functioned NiFe-LDH electrode (E-NF-LDH Cl or E-NF-LDH SW ) is firstly constructed by a minute-level electrochemistry assisted chlorine corrosion strategy, which presents enhanced oxygen evolution reaction (OER) performance and excellent anti-Cl – corrosion behavior for seawater splitting. The optimized E-NF-LDH Cl and E-NF-LDH SW deliver low OER overpotential of 355 and 384 mV to reach 1 A cm −2 current density in the 1 mol L –1 KOH and 1 mol L –1 KOH seawater, respectively, as well as excellent stability of E-NF-LDH Cl is maintained at 1 A cm –2 for 400 h in the 1 mol L –1 KOH and 1 mol L –1 KOH + 0.5 mol L –1 NaCl. MD (molecular dynamics) simulation and DFT (density functional theory) calculation confirmed that strong common-ion repulsion effect in IHP region repels free Cl – , forming high spin polarization centers and more single electrons to enhance the intrinsic activity of OER.
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DALTON TRANSACTIONS
·
2014
·Vol. 43
·期 24
·9216-9225
·
IF 4.097
Qiong Wu,Tianfeng Chen,Zhao Zhang,Siyan Liao,Xiaohui Wu,Jian Wu,Wenjie Mei,Yanhua Chen,Weili Wu,Lingli Zeng,Wenjie Zheng
Two arene Ru(II) complexes coordinated by 2-(3-methoxyphenyl)imidazole[4,5-f][1,10]phenanthroline, [(η6-RC6H5)Ru(m-MOPIP)Cl]Cl (R = H, 1; R = CH3, 2), have been prepared under microwave irradiation; the crystal structure of 2 exhibits a typical “piano stool” conformation, with bond angles for N1–Ru1–Cl1 86.02 (14)° and N2–Ru1–Cl1 84.51 (14)°. The Ru–C distance for the Ru atom bound to the benzene ring is about 0.2178(8) nm, and the average Ru–N distance for Ru atom to the two chelating N atoms is about 0.2092(4) nm. The evaluation of in vitro anticancer activities revealed that these synthetic Ru(II) complexes selectively inhibited the growth of HepG2 hepatocellular carcinoma cells, with low cytotoxicity toward LO2 human normal liver cells. The results demonstrated that the complexes exhibited great selectivity between human cancer and normal cells by comparing with the ligand m-MOPIP. Furthermore, complexes 1 and 2 could bind to c-myc G4 DNA in groove binding mode in promising affinity, and the insertion of the methyl groups in the arene ligand contributed to strengthen the binding affinity. This was also confirmed by molecular docking calculation and 1H NMR analysis which showed that both 1 and 2 can bind in the loop constructed by A6–G9 and G21–A25 base pairs in c-myc G4 DNA to block the replication of c-myc oligomer. Taken together, these results suggest that arene Ru(II) complexes display application potential as small molecule inhibitors of c-myc G4 DNA.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Taihe Wang,Chengling Zou,Yu Li,Yuxin Mu,Jiale Wei,Chao Chen,Yan Zhang,Haijian Li,Jianhua Yi,Haixia Ma,Fengqi Zhao
Porphyrin metal–organic frameworks (PMOFs) with intrinsic characteristics have been extensively applied but still hold great potential as catalysts for energetic materials. Three analogous PMOFs with rod-like single-crystal structures, namely, [C48H28N4O8Cu]2·C2NH6 (PCN-74), C48H28N4O8Cu (PCN-68) and [C48H28N4O8Cu]3·C2NH6 (PCN-52), were successfully synthesized by a simple hydrothermal approach. These samples were hydrophobic with a contact angle of 141.2°. The catalytic performance of the PMOFs in promoting hexanitrohexaazaisowurtzitane (CL-20) decomposition was studied by differential scanning calorimetry (DSC). The thermal decomposition gases produced from CL-20 were further studied by thermogravimetric/Fourier-transform infrared spectroscopy/mass spectrometry (TG/FTIR/MS) with or without PMOFs. The results showed that the introduction of the catalysts decreased the thermal decomposition temperature by about 1.4 °C and reduced the activation energy of CL-20 by about 13.5 kJ mol−1. In addition, real-time detection of decomposition product fragments demonstrated that MOFs influence the decomposition pathway. These effects were evidenced by the reduced laser ignition time and changes in combustion flame images.
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PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2022
·Vol. 48
·期 2
·e202200192
·
IF 2.134
Qi Huang,Yulan Song,Zhicheng Guo,Jinhao Zhang,Bo Jin,Ya Guo,Rufang Peng
Interface interaction has always been considered a major challenge in the field of desensitization. Co-crystal explosives can balance the properties of energetic materials, but their limited desensitization effect limits their further practical applications. Based on this, we proposed the desensitization of CL-20/HMX co-crystal by three functionalized graphene oxide (NH 2 -GO, Am-GO and M550-GO). The sensitivity results indicate that the M550-GO has the best desensitization. To further explore the reasons for the better desensitization effect of M550, molecular dynamics was used to simulate the binding energy and mechanical properties of different systems. The results showed that the electrostatic interaction between functionalized graphene oxide and CL-20/HMX co-crystal can enhance the interfacial interaction more than van der Waals force. In a word, this work provides new ideas and insights for enhancing the interface interaction of coating materials and popularizing the practical application of co-crystal explosives.
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高影响因子
ACS Applied Electronic Materials
·
2022
·
IF 4.494
Jiakun An,Gaoyu Chen,Xia Zhu,Xin Lv,Jianchun Bao,Xiangxing Xu
All-inorganic perovskite CsPbX3 (X = Cl, Br, and I) quantum dots (QDs) are emerging as attractive materials for photodetectors due to their prominent positive photoresponse. In this work, ambipolar photodetectors were constructed based on heterojunctions of CsPbX3 QDs and ZnO nanocrystals (NCs). The transition between the positive photoconductivity (PPC) and negative photoconductivity (NPC) was successfully controlled not only by the drain-source voltage (VDS) but also by the excitation wavelength and CsPbX3 crystal size. A high responsivity (R), on–off ratio (η), and detectivity (D*) were achieved for NPC (R = 1046 mA/W, η = 281, and D* = 1.65 × 1011 Jones), with PPC (R = 146 mA/W, η = 64, and D* = 1.54 × 1011 Jones) simultaneously revealed in the same device. A general mechanism combining the type-II heterojunction, the component and size-related band structure, and most critically the in-band trap states of the perovskites was established for understanding the unique ambipolar property. It exhibits application potential in developing functional photodetectors, memristors, and optical logic devices.
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JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2019
·
IF 2.6
Wei Zhao,Kunfeng Li,Peng Lin,Kai Xu,Shengheng Tan
Some particular hazardous and nuclear wastes containing a large amount of chlorine would cause the problematic processing during the waste vitrification, because of the low solubility of Cl in silicate glasses . Although a few works reported the chlorine behavior in aluminosilicate glasses, the results do not always show the consistency and a small variation of glass compositions may cause the significant changes. The present work studied the dissolution of Cl in the range of alkaline earth aluminosilicate glasses with the nominal mole composition of 50SiO 2 -10Al 2 O 3 -40AeO (Ae = Ca, Sr or Ba). The solubility of Cl in the glasses with different alkaline earth species followed the order of Ca (~8.1 wt%) > Sr (~6.0 wt%) > Ba (~3.5 wt%). The glass density and glass transition temperature decreased with the addition of Cl in three types of glasses, and AeCl 2 salts, identified with X-ray diffraction, segregated from the glasses, when Cl addition exceeds its solubility. Raman spectra indicate the dissolution of Cl leads to the increase of bridged oxygen bonds in glasses, supposing that Ca 2+ ions are attracted by Cl − ions, leaving the non-bridging oxygens that initially associated with Ca 2+ ions are bonded to Si 4+ (Al 3+ ) to become bridging oxygens.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xueqing Wang,Penghao Hao,Chunyan Wang,Xue Yu,Ming Tan,Jiuqing Liu,Yang Liu,Yang Zhang
To address the growing demand for high-performance membranes in sustainable water treatment, this study developed a novel nanofiltration (NF) membrane via a mixed-monomer strategy. Interfacial polymerization was conducted on macroporous polyethersulfone (PES) supports using an aqueous phase containing piperazine (PIP) and piperazine-2-carboxylic acid (PIP-COOH), and an organic phase of trimesoyl chloride (TMC). The introduction of PIP-COOH, a carboxyl-functionalized monomer, not only increased the membrane’s surface negative charge but also moderated the interfacial reaction rate, enabling the formation of a more uniform and controllable polyamide layer. By systematically adjusting the PIP/PIP-COOH ratio and monomer concentrations, the membrane structure and separation properties were fine-tuned. Under optimal conditions (3:1 PIP/PIP-COOH, 0.4 % TMC), the membrane achieved a NaCl/Na 2 SO 4 selectivity of 19.86 and a water permeance of 10.42 L·m −2 ·h −1 ·bar −1 . Additionally, outstanding antifouling performance was demonstrated, with a total fouling ratio of just 4.62 % and a flux recovery rate of 99.07 % after hydraulic cleaning. These results highlight the potential of using functionalized monomers in mixed systems to achieve a favorable balance between permeability, selectivity, and fouling resistance. The proposed approach offers a scalable and effective pathway for designing next-generation NF membranes for sustainable water treatment and resource recovery.
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PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2020
·Vol. 45
·期 8
·1293-1299
·
IF 1.544
Xiaomin Song,Qi Huang,Bo Jin,Rufang Peng
To improve the safety of CL-20, rGO was integrated into CL-20 (CL-20/rGO) by in-situ reduction. The prepared composites were characterized by Scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, High-performance liquid chromatography and Power X-ray diffraction, which proves that the presence/encapsulation of rGO on CL-20 surface would not change the molecular structure, amount and crystal form of raw CL-20. In addition, the thermal stability of the composites has improved, while the mechanical sensitivity was desensitized compared to raw CL-20, suggesting this in-situ reduction could be utilized to improve the safety of CL-20.
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ACS Nano
·
2024
·
IF 15.8
Xue Tian,Huan Liu,Bin Cao,Peng Zhang,Yanze Li,Yanchao Ou,Haonan Cui,Mengyao Xu,Bin Xu
MXenes are promising cathodes for Li–CO2 batteries owing to their high electrical conductivity and efficient CO2 activation function. However, the effects of adsorption and electronic structures of MXene on the full life cycle of Li–CO2 batteries have been rarely investigated. Here, we employ a coregulation approach to enhance the adsorption–decomposition of lithium carbonate (Li2CO3) by introducing Zn and Cl surface groups onto the Ti3C2 MXene (Zn–Ti3C2Cl2) catalyst. The incorporation of Cl surface groups enhances Li2CO3 adsorption on the MXene catalyst surface, resulting in the formation of small-sized and uniform Li2CO3. Additionally, the introduction of Zn shifts the d-band centers of titanium and promotes CO2 evolution reaction (CO2ER) activity, thereby facilitating the decomposition of discharge products. As a result, the Li–CO2 battery based on the Zn–Ti3C2Cl2 catalyst exhibits an ultralow overpotential (0.72 V) at 200 mA g–1 and stable cycling for up to 1500 h. This work validates the efficacy of promoting reversibility in Li–CO2 batteries by adjusting the adsorption-decomposition process.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Shiyu Hou,Zheng-Hong Huang,Tianle Zhu,Yiliang Tang,Ye Sun,Xiang Li,Fangxia Shen
The heat desorption of styrene from adsorbents is impracticable owing to its spontaneous polymerization under heating conditions. However, the feature also brings a potential promoting effect on styrene adsorption. Therefore, it is expected to develop the non-regenerative adsorbents with large adsorption capacity by strengthening the polymerization effect. In this work, C–Cl grafted silica gel adsorbents were prepared by introducing (Chloromethyl)dimethylchlorosilane (CMDMCS) and FeCl 2 into silica gel. The C–Cl grafted silica gel exhibited excellent styrene adsorption performance, its adsorption amounts for styrene were 4.67 times and 9 times of unmodified silica gel under dry air condition and high humidity condition (RH = 80%), respectively. In addition, the adsorption of styrene on C–Cl grafted silica gel was almost unaffected by the presence of toluene. The characterization of adsorbents after styrene adsorption indicated that the improvement of adsorption capacity of C–Cl grafted silica gel for styrene can be attributed to atom transfer radical polymerization (ATRP) of styrene molecules on modified silica gel during adsorption process .
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2026
·
IF 4.1
Yu Wang,Qiushuo Cheng,Ting Zhang,Lei Lü,Haixia Ma
The pyrolysis of energetic materials (EMs) directly determines their combustion performance and energy release efficiency. This study designed a potassium-doped maghemite (KF) catalyst with sea urchin-like structure. Traditional lead-based catalyst could cause serious environmental pollution, whereas KF may offer dual advantages of flame suppression and high catalytic activity. Electron paramagnetic resonance (EPR) spectroscopy demonstrate the increased defect concentration compared with commercial γ-Fe 2 O 3 and α-Fe 2 O 3 . The as-prepared KF catalyst provides more surface active sites, significantly enhancing its catalytic performance for the thermal decomposition of hexanitrohexaazaisowurtzitane (CL-20). Graphene oxide (GO) always acts as a stabilizer for EMs due to the excellent mechanical properties. Hence, K-γ-Fe 2 O 3 /reduced graphene oxide (KFG) was prepared via the one-step solvothermal method. Experimental results show that the ternary KFG composite can lower both the initial decomposition temperature and the apparent activation energy of CL-20. KFG accelerates the decomposition process of CL-20 and narrows the distribution of gaseous products. This study reveals the synergistic mechanism among potassium, γ-Fe 2 O 3 , and graphene, providing new design strategy and theoretical foundation for highly efficient combustion catalysts applied in solid propellants.
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Materials
·
2026
·Vol. 19
·期 8
·1641
·
IF 3.7
Lele Chen,Ruqing Chen,Yule Huang,Meiqing Liang,Yang Zhou,Danning Ma,Kai Guo
Bi2O2Se is an emerging oxyselenide semiconductor, noted for its promising thermoelectric properties and excellent chemical stability, and it is often regarded as an n-type counterpart to p-type BiCuSeO. However, its intrinsic thermoelectric figure of merit (zT) is severely limited by low electron concentration and high thermal conductivity. In this work, we employed Cl element as donator dopant to substantially enhance the carrier concentration. The room-temperature carrier concentration of Bi2O2Se0.98Cl0.02thereby reached 2.70 × 1020cm−3, representing an improvement of two orders of magnitude compared to that of pristine Bi2O2Se. Subsequently, multiple hot-pressing cycles were applied to the optimized composition Bi2O2Se0.98Cl0.02. The process induced significant grain refinement, and the resulting high density of grain boundaries effectively suppressed the lattice thermal conductivity, reducing it to 0.95 W·m−1·K−1at 823 K. Eventually, a maximumzTof 0.24 was achieved at 823 K for the three-time hot-pressed Bi2O2Se0.98Cl0.02sample, representing a 71% improvement compared with the pristine Bi2O2Se sample prepared by single hot-pressing (zT= 0.14 at 823 K). This work provides a new strategy for enhancing the thermoelectric performance of oxyselenide through the synergistic regulation of doping and microstructure.
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高影响因子
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