ACS Applied Nano Materials
·
2025
·
IF 5.5
Wenjing Tian,Hui-Zi Huang,Di Liu,Zhejiaji Zhu,Junwen Zhou,An-Xiang Yin
The overall hydrazine splitting (OHzS, N2H4 → N2 + 2H2) reaction, which is integrated by electrocatalytic hydrazine oxidation reaction (HzOR) and hydrogen evolution reaction (HER), provides an energy-efficient alternative to conventional overall water splitting (OWS) for sustainable hydrogen production. Herein, we present the controlled synthesis of Rh1Sb1@Rh–Sb nanoflowers (NFs) that comprise intermetallic Rh1Sb1 nanodendrite cores and ultrathin Rh–Sb random alloy nanosheet shells. The alloying of Sb enhances both HzOR and HER performances of Rh nanocatalysts through modulation of growth mechanisms, morphological evolution, and surface electronic configurations. Remarkably, a symmetrical OHzS electrolyzer employing Rh1Sb1@Rh–Sb NFs as bifunctional catalysts for both electrodes achieves the current densities of 100 and 500 mA cm–2 at cell voltages of merely 0.216 and 0.700 V (without iR compensation), respectively, corresponding to 88.1% and 71.9% reductions in electricity consumption compared to alkaline OWS systems. Furthermore, a rechargeable zinc–hydrazine (Zn–Hz) battery using Rh1Sb1@Rh–Sb NFs as the positive electrode exhibits high energy efficiency, power density, and durability. The prototype device, integrating a photovoltaic cell, a Zn–Hz battery, and an OHzS cell, demonstrates the potential for efficient and simultaneous solar energy storage, hydrazine pollutant remediation, and hydrogen generation, offering a promising avenue for practical applications.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2021
·
IF 6.766
Qilu Yao,Jianjun Long,Kangkang Yang,Xiugang Li,Bin Huang,Xiangshu Chen,Zhang-Hui Lu
Designing highly active and selective metal nanocatalysts for use in liquid chemical hydrides is highly attractive but remains a critical challenge. Herein, bimetallic NiPt nanoparticles (NPs) immobilized on lanthanum oxycarbonate (NiPt/La 2 O 2 CO 3 ) have been facilely synthesized via an alkali-assisted reduction method. The introduction of NaOH is the key factor to the formation of the well-dispersed and ultrafine NiPt NPs (2.8 nm). The obtained Ni 0.6 Pt 0.4 /La 2 O 2 CO 3 exhibits an extraordinarily high catalytic activity and 100% H 2 selectivity for hydrous hydrazine dehydrogenation , providing a turnover frequency value (TOF) high up to 490 h −1 at 298 K. Additionally, the NiPt/La 2 O 2 CO 3 prepared with NaOH demonstrates higher catalytic performance and lower activation energy than that of NiPt/La 2 O 2 CO 3 _N prepared without NaOH. Moreover, the NiPt/La 2 O 2 CO 3 also shows an outstanding catalytic efficiency (TOF = 1200 h −1 ) for dehydrogenation of hydrazine borane at 298 K. The efficient catalytic performance may be attributed to the small size effect, the strong metal-support interaction, and the NaOH promotion effect. This alkali-assisted reduction method provides a new perspective for preparing of highly efficient catalysts in clean energy application.
研究领域:
材料科学
·
催化化学
·
清洁能源
✓ 已验证
DOI
高影响因子
COMBUSTION AND FLAME
·
2024
·
IF 5.8
Ruixuan Xu,Xin Li,Zhihua Xue,Danfeng Yang,Suhang Chen,Kangzhen Xu,Qi-Long Yan,Hongqi Nie
In this work, the combustion enhancement and agglomeration inhibition of HTPB-based composite propellants have been achieved by incorporation of Al@AP composites containing a nitrogen-rich compound 4,4′,6,6′-tetra(hydrazino)hydrazo-1,3,5-triazine (THHT) as a burning rate modifier. The thermal reactivity and decomposition behavior of Al@AP/THHT composites were studied using DSC/TGA/FT-IR techniques. These composites showed a greater heat release with lower decomposition peak temperature. The propellant formulations could be well tuned by adjusting the mutual distance between Al/AP and THHT crystals. The results suggest that the inclusion of Al@AP/THHT in solid propellants would lead to enhanced energy release, with the value of explosion heat increased from 5632.0 J g -1 to 5971 J g -1 (+6.0 %), the ignition delay time decreased from 105 ms to 79 ms (-24.8 %) and the flame radiation intensity maximum raised from 2199 to 1988 (+10.6 %). The modified propellants are featured with a chemical reaction-dependent flame propagation rate at lower pressure range (1∼10 MPa) and a pressure-controlled process over 10 MPa. The burning rate of propellant at 1 MPa can be increased from 6.1 mm s -1 to 7.0 mm s -1 (+14.8 %) by the inclusion of Al@AP/THHT. The pressure exponent of modified propellants was reduced from 0.48 to 0.33 in pressure range 1∼15 MPa, which is mainly attributed to the activation of Al@AP at lower pressure. Furthermore, the inhibition of Al agglomeration was found once it was coated with AP. The characterizations on condensed combustion products (CCPs) demonstrated an enhancement in combustion efficiency due to an increased content of Al 2 O 3 , accompanied with a remarkable reduction of mean size from 14.0 μm to 1.3 μm (-90.7 %) and a rise in the proportion of nano-/micron-sized particles. The overall effects of Al@AP interfacial control and precise catalysis of THHT on the energy release and combustion of propellants were identified and the primitive combustion mechanisms are proposed.
研究领域:
推进剂化学
·
燃烧科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2019
·Vol. 9
·期 7
·596
·
IF 3.444
Ying Liu,Huan Zhang,Cong Ma,Nan Sun
Precious metal-free NiMoM (M = Pr2O3, Cu2O) catalysts have been synthesized through a simple coreduction method, without any surfactant or support material, and characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The resultant Pr2O3- or Cu2O-modified NiMo catalysts exhibit different structures, which is due to a difference in the synergistic effects of NiMo and the modifying elements. NiMoPr2O3has an amorphous structure, with low crystallinity and uniform particle dispersion, while NiMo@Cu2O adopts the core–shell structure, where the core and shell are synergistic with each other to promote electron transfer efficiency. The support material-free nanocatalysts Ni9Mo1(Pr2O3)0.375and Ni4Mo@Cu2O are both highly efficient compared with bimetallic NiMo catalysts, in terms of hydrogen generation from hydrous hydrazine (N2H4·H2O) at 343 K, with total turnover frequencies (TOFs) of 62 h−1and 71.4 h−1, respectively. Their corresponding activation energies (Ea) were determined to be 43.24 kJ mol−1and 46.47 kJ mol−1, respectively. This is the first report on the use of Pr-modified NiMo and core–shell NiMo@Cu2O catalysts, and these results may be used to promote the effective application of noble metal-free nanocatalysts for hydrogen production from hydrous hydrazine.Keywords:NiMoM (M = Pr2O3, Cu2O) catalysts;hydrous hydrazine;hydrogen production
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2021
·
IF 4.889
Kai Wang,Ya-Xi Ye,Cheng-Yan Jiang,Meng-Ya Guo,Xiang-Yang Zhang,Ai-Qin Jiang,Yu-Shun Yang,Qing-Cai Jiao,Hai-Liang Zhu
Hydrazine is a very important industrial chemical with high toxicity to the human body. In this work, a fluorescent probe HZ , based on the substitution-cyclization-elimination cascade which initiated by hydrazine, was designed and synthesized. HZ had various characteristics such as high selectivity, high sensitivity, fast detection speed, wide application range, and so on. After treating with hydrazine, the fluorescence signal of HZ at 520 nm in aqueous solution was significantly enhanced. Furthermore, HZ had the linear range of 1–10 equivalent for monitoring hydrazine, and the solution showed a colorless to yellow color change. In practical application, the detection limit of HZ for the detection of hydrazine was only 0.75 μM, which could be utilized for trace detection of hydrazine in different water samples. These indicated that HZ had a broad application prospect in the fields of environmental protection and water treatment. This work not only provided a useful instrument for the detection of the ecological environment but also supplied important information for the system optimization of other ecological environment detectors. In addition, HZ could monitor endogenous and exogenous hydrazine in MCF-7 cells successfully, which demonstrated its potential for practical application in complex biological systems.
研究领域:
环境科学
·
分析化学
·
生物学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 14
·5496
·
IF 4.6
Ting Li,Chaoyue Yang,Houkang Cao,Siyi Mo,Bo Li,Zhipeng Huang,Ruobing Zhang,Jianzhao Wu,Kefeng Zhang,Ya Gao
Bergenin (BER), a natural component of polyphenols, has a variety of pharmacological activities, especially in improving drug metabolism, reducing cholestasis, anti-oxidative stress and inhibiting inflammatory responses. The aim of this study was to investigate the effects of BER on liver injury induced by isonicotinic acid hydrazide (INH) and rifampicin (RIF) in mice. The mice model of liver injury was established with INH (100 mg/kg)+RIF (100 mg/kg), and then different doses of BER were used to intervene. The pathological morphology and biochemical indicators of mice were detected. Meanwhile, RNA sequencing was performed to screen the differentially expressed genes and signaling pathways. Finally, critical differentially expressed genes were verified by qRT-PCR and Western blot. RNA sequencing results showed that 707 genes were significantly changed in the INH+RIF group compared with the Control group, and 496 genes were significantly changed after the BER intervention. These differentially expressed genes were mainly enriched in the drug metabolism, bile acid metabolism, Nrf2 pathway and TLR4 pathway. The validation results of qRT-PCR and Western blot were consistent with the RNA sequencing. Therefore, BER alleviated INH+RIF-induced liver injury in mice. The mechanism of BER improving INH+RIF-induced liver injury was related to regulating drug metabolism enzymes, bile acid metabolism, Nrf2 pathway and TLR4 pathway.Keywords:bergenin;isonicotinic acid hydrazide;rifampicin;liver injury;RNA sequencing
研究领域:
药理学
·
分子生物学
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 23
·11318-11324
·
IF 3.3
Jiazheng Zhu,Chengjie Duan,Sen Ye,Qizhong Zhang,Kun Li,Guangke He,Xiang Liu,Zhiguo Zhang
Exploring synthetic methods and catalysts that are easy to handle, highly active, and low-cost for producing industrially important chemicals is a long-term goal in both science and industry. Herein, we present a general and facile Ni-catalyzed reductive amination of aldehydes/ketones methodology using hydrazine as both nitrogen and hydrogen sources, instead of the traditionally used hydrogen gas and ammonia. The mesostructured alumina-supported Ni catalyst with a relatively high ratio of Ni0 and small-sized Ni nanoparticles plays a critical role in this transformation, resulting in 55 aldehydes/ketones successfully converting to their corresponding primary amines with 61–99% yields. This work outlines a low-cost yet robust catalytic methodology for the facile and general synthesis of primary amines for practical laboratory and industrial application.
研究领域:
有机化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Hongtao Zou,Feng Guo,Minghong Luo,Qilu Yao,Zhang-Hui Lu
Ultrafine NiFe nanoparticles (NPs) decorated by La(OH) 3 have been successfully prepared via a facile one-step co-reduction method without the help of surfactant or support. It was found that after being decorated with La(OH) 3 , the NiFe–La(OH) 3 NPs have a smaller particle size and lower crystallinity . The resultant NiFe–La(OH) 3 nanocatalyst exhibits an excellent catalytic activity , 100% H 2 selectivity, and satisfied recyclability for hydrogen evolution from hydrous hydrazine (N 2 H 4 ·H 2 O) at 343 K under alkaline conditions, giving a high turnover frequency (TOF) value of 100.6 h −1 , which is more than 35 times higher than pure NiFe NPs (2.8 h −1 ). The kinetics study shows that with respect to the concentration of catalyst and N 2 H 4 , the N 2 H 4 dehydrogenation reaction follows fist-order kinetics and zero-order kinetics, respectively. Furthermore, NiFe–La(OH) 3 also exhibits an outstanding performance and excellent recycle stability during high dehydrogenation of hydrazine borane (N 2 H 4 BH 3 ). The excellent performances for the dehydrogenation of N 2 H 4 and N 2 H 4 BH 3 could be attributed to the strong interaction between La(OH) 3 and NiFe NPs, as well as ultrafine and low crystalline NiFe NPs due to the addition of La(OH) 3 .
研究领域:
催化
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2016
·Vol. 46
·期 2
·554-563
·
IF 4.177
Erbin Shi,Huiming Lin,Qian Wang,Feng Zhang,Shaoxuan Shi,Tingting Zhang,Xin Li,Hao Niu,Fengyu Qu
A novel ZIF-Ni composite film has been successfully prepared by a facile method involving the in situ deposition of ZIF-8 on a nickel porous film which is fabricated by selectively etching copper from a dense Ni/Cu alloy film. The nanostructures of the resulting ZIF-Ni composite films are carefully examined by a combination of scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) spectroscopy, energy dispersive X-ray (EDX), and nitrogen adsorption–desorption. Cyclic voltammetric and amperometric studies show the enhanced electrocatalytic properties of the ZIF-Ni composite film electrodes toward hydrazine oxidation relative to the synergistic effect of ZIF-8 and porous Ni films. The application potential of the composite films as amperometric detectors is explored for the determination of hydrazine. A high sensitivity of 805.5 μA mM−1 for hydrazine detection with a low detection limit of 0.021 μM (S/N = 3) and a wide linear range from 2.5 μM to 28 mM are revealed for this new type of composite film as the detecting electrode. Moreover, the composite films exhibit excellent selectivity and remarkable stability for the oxidation of hydrazine. This can offer new opportunities for the fast and selective detection of hydrazine and provide a promising platform for sensor designs for hydrazine detection.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Jia Shunhan,Zhang Libing,Liu Hanle,Wang Ruhan,Jin Xiangyuan,Wu Limin,Song Xinning,Tan Xingxing,Ma Xiaodong,Feng Jiaqi,Zhu Qinggong,Kang Xinchen,Qian Qingli,Sun Xiaofu,Han Buxing
Nitrogen oxides (NO x ) play important roles in the nitrogen cycle system and serve as renewable nitrogen sources for the synthesis of value-added chemicals driven by clean electricity. However, it is challenging to achieve selective conversion of NO x to multi-nitrogen products (e.g., N 2 H 4 ) via precise construction of a single N-N bond. Herein, we propose a strategy for NO x -to-N 2 H 4 under ambient conditions, involving electrochemical NO x upgrading to NH 3 , followed by ketone-mediated NH 3 to N 2 H 4 . It can achieve an impressive overall NO x -to-N 2 H 4 selectivity of 88.7%. We elucidate mechanistic insights into the ketone-mediated N-N coupling process. Diphenyl ketone (DPK) emerges as an optimal mediator, facilitating controlled N-N coupling, owing to its steric and conjugation effects. The acetonitrile solvent stabilizes and activates key imine intermediates through hydrogen bonding. Experimental results reveal that Ph 2 CN* intermediates formed on WO 3 catalysts acted as pivotal monomers to drive controlled N-N coupling with high selectivity, facilitated by lattice-oxygen-mediated dehydrogenation. Additionally, both WO 3 catalysts and DPK mediators exhibit favorable reusability, offering promise for green N 2 H 4 synthesis.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 30
·2401694
·
IF 27.4
Yin Zhu,Yanxu Chen,Yafei Feng,Xiangmin Meng,Jing Xia,Genqiang Zhang
Hydrazine oxidation-assisted water splitting is a critical technology to tackle the high energy consumption in large-scale H 2 production. Ru-based electrocatalysts hold promise for synergetic hydrogen reduction (HER) and hydrazine oxidation (HzOR) catalysis but are hindered by excessive superficial adsorption of reactant intermediate. Herein, this work designs Ru cluster anchoring on NiFe-LDH (denoted as Ru c /NiFe-LDH), which effectively enhances the intermediate adsorption capacity of Ru by constructing Ru─O─Ni/Fe bridges. Notably, it achieves an industrial current density of 1 A cm −2 at an unprecedentedly low voltage of 0.43 V, saving 3.94 kWh m −3 H2 in energy, and exhibits remarkable stability over 120 h at a high current density of 5 A cm −2 . Advanced characterizations and theoretical calculation reveal that the presence of Ru─O─Ni/Fe bridges widens the d-band width (W d ) of the Ru cluster, leading to a lower d-band center and higher electron occupation on antibonding orbitals, thereby facilitating moderate adsorption energy and enhanced catalytic activity of Ru.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Wenxing Jiang,Qiqi Wan,Endao Zhang,Yingying Liu,Junbo Hou,Min Yang,Xiaodong Zhuang,Changchun Ke
This study presents a novel direct methylhydrazine fuel cell (DMHFC) utilizing a hydrothermally synthesized Pd-Ni(OH) 2 composite catalyst supported on nickel foam (Pd-Ni(OH) 2 /NF) as the anode. The Pd-Ni(OH) 2 /NF features a three-dimensional hierarchical architecture with dispersed Pd nanoparticles (0.08 mg cm −2 ) chemically anchored via Pd-O-Ni bonds in the Ni(OH) 2 nanosheet matrix, as confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) analyses. The electrode demonstrates superior electrocatalytic activity for the methylhydrazine oxidation reaction (MHOR), attributed to enhanced active site accessibility, charge transfer efficiency, and optimized mass transport. Differential electrochemical mass spectrometry (DEMS) reveals complete oxidation of hydrazine fragments to N 2 with suppressed NH 3 byproduct formation relative to Pd/C. Systematic optimization of operating conditions yields a peak power density of 30.5 mW cm −2 (oxygen as the oxidant, 80 °C) and 110 mW cm −2 (hydrogen peroxide as the oxidant, 80 °C), with performance trade-offs observed between reaction kinetics and fuel crossover. This work validates the feasibility of DMHFC technology, highlighting the potential of methylhydrazine as a high-energy-density fuel for portable systems, while providing insights into electrode design and performance optimization for advanced energy conversion devices.
研究领域:
电化学
·
能源材料
·
催化化学
·
燃料电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）