ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES
·
2016
·Vol. 47
·期 4
·413-425
·
IF 1.141
Zhang Xianlong,Tian Ge,Gao Jing,Han Mei,Su Rui,Wang Yanxiang,Feng Shouhua
Submarine hydrothermal vents are generally considered as the likely habitats for the origin and evolution of early life on Earth. In recent years, a novel hydrothermal system in Archean subseafloor has been proposed. In this model, highly alkaline and high temperature hydrothermal fluids were generated in basalt-hosted hydrothermal vents, where H 2 and CO 2 could be abundantly provided. These extreme conditions could have played an irreplaceable role in the early evolution of life. Nevertheless, sufficient information has not yet been obtained for the abiotic synthesis of amino acids, which are indispensable components of life, at high temperature and alkaline condition. This study aims to propose a new method for the synthesis of glycine in simulated Archean submarine alkaline vent systems. We investigated the formation of glycine from ethanolamine under conditions of high temperature (80–160 °C) and highly alkaline solutions (pH = 9.70). Experiments were performed in an anaerobic environment under mild pressure (0.1–8.0 MPa) at the same time. The results suggested that the formation of glycine from ethanolamine occurred rapidly and efficiently in the presence of metal powders, and was favored by high temperatures and high pressures. The experiment provides a new pathway for prebiotic glycine formation and points out the phenomenal influence of high-temperature alkaline hydrothermal vents in origin of life in the early ocean.
研究领域:
生物化学
·
地球科学
·
天体生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Bo Meng,Shenyong Ren,Zhi Li,Suofu Nie,Xinyue Zhang,Weiyu Song,Qiaoxia Guo,Baojian Shen
The direct synthesis of zeolite Y with high SiO 2 /Al 2 O 3 (SAR > 6.0) and small crystal size is a great challenge. The conventional production of high silica Y usually involves organic template into the synthesis system, which takes high cost. Here, zeolite Y with SAR of 6.15 and small crystal size via introducing Co 2+ in a facile one-step hydrothermal method without organic template was achieved. The SAR increased from 5.2 to 6.15 compared to normal NaY, and the crystal size decreased to 50%. The introduction of Co 2+ in synthesis system affects the formation of 5-coordination intermediate ( M-O -Si )* around Co 2+ during crystallization process which is the critical factor to nucleation. The stability of ( Co–O –Si )* is weaker than that of ( Al–O –Si )*, which leads to the increase of SAR around Co 2+ . The microcrystals of Co(OH) 2 provide adhesive surface for the amorphous material and promote nucleation. The zeolite Y shows good performance in the cracking of 1,3,5-triisopropylbenzene because of larger surface area and more active sites being exposed. This is a new strategy for industrial synthesis of high SiO 2 /Al 2 O 3 and small crystal size zeolite Y.
研究领域:
材料科学
·
化学工程
·
催化
✓ 已验证
DOI
高影响因子
Separations
·
2025
·Vol. 12
·期 11
·303
·
IF 2.7
Ruiyi Sun,Fan Li,Yu Xie,Na Sui,Yong Li,Junlian Wang
In this study, two γ-carbon-substituted dialkylphosphinic acids—symmetrical di-(3,5,5-trimethylhexyl)phosphinic acid (P355) and unsymmetrical (2-ethylhexyl)(3,5,5-trimethylhexyl)phosphinic acid (P227-355)—were synthesized via a precise free radical addition method. Their chemical structures were fully characterized using ESI-HRMS,1H NMR,31P NMR, and FT-IR. Their middle REE extraction/separation performance, anti-emulsification behavior, and underlying mechanisms were investigated. Key results showed that P355 had better Dy saturation capacity (357.51 mg/L) and good selectivity for middle REEs (their average value ofβN + 1/N= 3.18), while P227-355 showed higher back-extraction efficiency (≈90% Dy stripping at ≥0.02 mol/L H2SO4). Methyln-pentyl ketone (MNPK) eliminated emulsification and boosted saturation capacity (324.18 mg/L Sm and 357.51 mg/L Dy for P355). Mechanistically, the extraction followed cation exchange (Sm3++ 2(HL)2↔ Sm·L3·(HL) + 3H+); MNPK formed hydrogen-bonded associates (HL·MNPK) with free extractants, slightly reducing the effective concentration of (HL)2but not altering the core cation exchange mechanism.
研究领域:
湿法冶金
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稀土元素分离
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溶剂萃取
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无机合成
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配位化学
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2025
·
IF 9.1
Yun Zhang,Yiwen Guo,Lu Liu,Kaibo Sun,Fengyue Guo,Qingquan Guo,Jinhua Zhu
Superior aqueous dispersibility mitigates nanoparticle toxicity in biological systems while preventing agglomeration. Herein, a hydrogen-bond-mediated aqueous synthesis strategy is proposed, utilizing β-cyclodextrin (β-CD) and sodium citrate (SC) to directly fabricate metal oxide nanoparticles in a single step. This approach not only suppresses particle aggregation but also preserves the molecular integrity of surface modifiers under high-temperature reaction conditions. Taking the preparation of gadolinium oxide as an example. Through modifier molecules on Gd 2 O 3 surfaces, the hydrophilicity is markedly enhanced, enabling stable dispersion in aqueous media, which is a critical prerequisite for biomedical applications. This green synthesis method, regulated by hydrogen-bonding interactions, overcomes safety concerns associated with organic solvents in traditional solvothermal techniques and gadolinium ion leakage in co-precipitation methods, while eliminating complex post-modification steps. The longitudinal relaxation rate (r1) of Gd 2 O 3 UPs-220, prepared by this method, achieves 8.43 m m −1 s −1 at a magnetic field strength of 7.0 T, demonstrating excellent magnetic resonance imaging (MRI) enhancement performance. This synthetic strategy provides an approach for preparing water-dispersible metal oxides.
研究领域:
纳米材料
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磁共振成像
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生物医学工程
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无机合成
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Junke Cui,Chaochao Cao,Jianguo Zhang,Chaoze Liu,Shaobo Yang,Song Yan,Zheng Zhou,Dong Wang,Yanming Xue,Chengchun Tang
Boron nitride microsphere (BNMS) has emerged as a promising filler for advanced composite materials due to its distinctive isotropic geometry and exceptional powder flow characteristics. However, challenges such as difficulties in controlling spherical morphology and crystal phase transformation have limited the development of research into the bottom-up synthesis of high-crystallinity BNMS. This study proposes a novel controllable synthesis strategy for BNMS with densely interconnected nanosheets structure. With the mixture of melamine (M) and boric acid (B) as precursors, structurally robust BNMS microparticles with high crystallinity were successfully prepared via a three-step approach of pre-pyrolysis, spray granulation, and high-temperature sintering (1500 °C) in sequence. The key for this synthesis route lies in the formation of a homogeneous boron, carbon, nitrogen and oxygen (BCNO) complexes intermediate via pre-pyrolysis. The obtained BNMS microparticles are composed of high-crystallinity hexagonal BN (h-BN) nanosheets, which form a three-dimensionally interconnected structure through an amorphous B–O–N interface phase. Meanwhile, the effects of the molar ratio of M to B (1:1–1:3) in the precursors and pre-pyrolysis temperatures (400–600 °C) on the morphology and crystallinity of BNMS microparticles were systematically investigated. The results indicate that a molar ratio of 1:2 and a pre-pyrolysis temperature of 500 °C facilitate the formation of dense microspheres with excellent crystallinity and integrity. This work provides an effective approach for the bottom-up preparation of high-crystallinity BNMS, and is of great significance for advancing its applications in composite materials.
研究领域:
材料科学
·
陶瓷
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纳米材料
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复合材料
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无机合成
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 6
·120316
·
IF 7.2
Jiahe Sun,Wenyue Hou,Ziyi Ma,Guojun Yin,Hongying Lü,Zhiguo Zhu
Creating highly active Mo-incorporated zeolites for catalytic applications remains a significant challenge in materials synthesis. Traditional hydrothermal methods often struggle to balance rapid crystallization with effective Mo incorporation and control over the resulting material's porosity. This work introduces a novel synthetic strategy based on rapid structural reconstruction to produce high-performance Mo-Beta zeolites. Full crystallinity is achieved in just 3 h at 140 °C, a significant improvement over the conventional approaches. The resulting Mo-Beta materials feature a hierarchical micro- and mesoporous architecture and a tunable Si/Mo ratio (53–202), allowing for optimized catalytic performance. These zeolites demonstrate exceptional activity in the oxidative desulfurization of dibenzothiophene, accomplishing a remarkable mass-specific activity (1.50 h –1 ) and turnover frequency (20.8 h –1 ) under the optimized reaction conditions (10 mL model oil; DBT concentration of 500 μg mL –1 ; H 2 O 2 /DBT = 3; 45 mg catalyst; 60 °C). These metrics significantly exceed those reported for many other heteroatom-containing zeolite catalysts. Moreover, the synthesized Mo-Beta catalyst exhibits excellent stability at the reaction time of 1 h. However, slight activity loss is observed at a short reaction time of 0.25 h after five reaction runs and the catalytic activity can be regenerated by calcination. This rapid structural reconstruction method offers a promising new route for the efficient synthesis of advanced Mo-zeolites and highlights their potential for sustainable catalytic applications.
研究领域:
材料化学
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催化
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无机合成
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环境化学
·
石油化学加工
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Zili Ma,Chenxiu Li,Liuqing Zhu,Yang Zhang,Jinpei Hei,Xiaojie Yin,Yaqiong Kong,Haifeng Yang,Yanjun Yin
ZnO-based thermites have garnered significant attention owing to their unique advantages in various applications. Given the limited activation of nano-Al and low energetic density of Al/ZnO, a pseudooxide ZnNCN were investigated to replace ZnO as novel oxidizer with the fluororubber encapsulated nano-Al to assemble a novel thermite system of Al@F2311/ZnNCN. In this work, the new aluminothermic reaction between Al@F2311 and ZnNCN was explored systematically and compared with Al/ZnNCN, Al@F2311/ZnO and Al/ZnO. Their structure, morphology and energetic performance was investigated by employing X-ray diffraction (XRD), fourier transform infrared spectrophotometry (FTIR), field emission scanning electron microscope (FE-SEM) techniques and differential scanning calorimetry (DSC) and the combustion behaviors was studied by high-speed camera. It is found that energy release of Al@F2311/ZnNCN reached to 1431.6 J·g −1 accompanied by intense burning flames. Moreover, a large amount of gas produced in the aluminothermic reaction between Al@F2311 and ZnNCN. It is indicated that the ZnNCN with high nitrogen content displayed as oxide in the thermite composite show better metastable characteristics and it is expected to be applied in fields such as airbags. Besides, the metal nitrides such as AlN were obtained following a self-propagating route within seconds, providing new possible for the preparation of ceramic nitrides under air atmosphere.
研究领域:
含能材料
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材料化学
·
燃烧科学
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无机合成
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2025
·
IF 4.6
Lu Wang,Bing-Han Sun,Jian-Jun Yu,Jian-Li Li
In the work, the method of chemical vapor deposition reaction of CO and gaseous MoO 3 was proposed to prepare ultrafine Mo 2 C. Different technologies, such as XRD, FESEM, TEM, laser particle size analysis and Brunauer-Emmett-Teller method, as well as thermodynamic software FactSage 8.3, were adopted to analyze the experimental data. The results revealed that increasing the flow-rate of reduction‑carbonization regent CO ( V outer (CO)) was beneficial for the formation of Mo 2 C; while when V outer (CO) exceeded the threshold value, single-phase Mo 2 C cannot be prepared. The optimal conditions for preparing ultrafine Mo 2 C were given as T = 1223–1323 K, V outer (CO) = 900 mL/min, and V inner (Ar) = 100 mL/min; herein, V inner (Ar) means the flow-rate of carrier gas Ar. Under these conditions, the preparation procedures of Mo 2 C followed the pathways of MoO 3 → (MoO 3 ) n ( n = 2, 3, 4, and 5) → MoO 2 → Mo 2 C. The study also discovered that the as-prepared Mo 2 C kept the overall morphology as the intermediate product MoO 2 with a hexagonal-platelet structure; however, due to the removal of oxygen and the decrease of products' molar volume, the prepared Mo 2 C exhibited a rougher and more porous micro-structure with a specific surface area up to 36.7 m 2 /g. This work may provide an important methodical guidance for the scale-preparation of ultrafine Mo 2 C.
研究领域:
材料科学
·
化学工程
·
纳米材料
·
无机合成
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·
IF 15.7
Zhu Yuxin,Guo Zhengyang,Zeng Jian,Zhao Jinfu,Li Hongguan,Gao Guangying,Di Shuanlong,Wang Shulan,Li Li
Manganese-rich layered transition-metal oxides are of great interests as positive electrodes for sodium-ion batteries considering their high specific capacity and operating voltage. However, it remains challenging to synthesize layered transition-metal oxides with high stability and rapid ion-migration kinetics. Herein, we develop a straightforward and universal synthesis approach for P2-type layered transition-metal oxides by simply updating the conventional solid-state reaction with only additional dicyandiamide introduced. We reveal the ammonia released successfully restrains the irreversible oxygen redox for stabilizing cationic migration and decreases the crystallization temperature for high-quality structure formation. The effectively suppressed Jahn-Teller distortion and facilitated Na + transport kinetics therefore endow Na 1/2 MnO 2 with overall performance enhancement, including a 6.7-fold improvement in rate capability and enhanced cycling stability. Similar performance enhancements are also found in other manganese-based layered transition-metal oxides, presenting great strategy universality. This work marks a key step forward in the synthesis-by-design of high-performance sodium-ion batteries electrode materials.
研究领域:
材料科学
·
电化学
·
储能
·
无机合成
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2014
·Vol. 6
·期 2
·169-177
·
IF 2.275
Song Guosheng,Han Linbo,Zou Weiwei,Xiao Zhiyin,Huang XiaoJuan,Qin Zongyi,Zou Rujia,Hu Junqing
Cu 2-x S nanocrystals (NCs), characterized by low cost, low toxicity, high stability and high photothermal conversion efficiency, provide promising platforms as photothermal agents. Herein, a novel two-step synthesis has been developed for Cu 7 S 4 nanocrystals with hollow structure using the as-prepared copper nanoparticles as starting a solid precursor followed by hot-injection of sulfide source.The Cu 7 S 4 NCs exhibit intense absorption band at Near-infrared (NIR) wavelengths due to localized surface plasmon resonance (LSPR) mode, which can effectively convert 980 nm-laser energy into heat.Moreover, the localized high temperature created by Cu 7 S 4 NCs under NIR irradiation could result in efficient photothermal ablation (PTA) of cancer cells in vivo , demonstrating a novel and promising photothermal nanomaterials.
研究领域:
纳米材料
·
光热治疗
·
癌症纳米技术
·
无机合成
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Xiaofu Tang,Guangwu Wen,Yan Song
A novel method for scalable fabricating porous silicon/carbon composite as anode material for lithium-ion batteries is reported in this article. Diatomite is used as a raw material for synthesis of porous silicon via combining mechanical ball milling with magnesiothermic reduction method, employing NaCl as a heat scavenger. The resulting silicon maintains the porous structure of diatomite, with large specific surface area of 288.5 m 2 g −1 and average pore size of 9.6 nm. The C@pSi-I composite delivers improved cycling stability and good rate capability. A discharge capacity of 1116.7 mA h g −1 at current density of 200 mA g −1 is achieved after 200 cycles, which will be beneficial to the scalable synthesis of porous silicon materials for the next generation lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
功能材料
·
无机合成
·
电极工程
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Wenming Xu,Xianghui An,Qinggang Zhang,Zhen Li,Qinhua Zhang,Zheng Yao,Xiaokai Wang,Sha Wang,Jingtang Zheng,Jing Zhang,Wenting Wu,Mingbo Wu
Carbon nitride (CN) is considered to be one of the most promising materials for solar photocatalytic hydrogen evolution. However, its low crystallinity degree, to some extent, limited its photocatalytic activity. Unlike previous reports, we developed a feasible method to improve the crystallinity of carbon nitride using unmelted CsCl as mild chemical scissors to trim pristine carbon nitride instead of its precursor or the intermediates with incomplete structure. As a result, the regular poly(heptazine imides) structures with higher π conjugation were exposed to the surface, wherein the bonded Cs+ ions on the surface of carbon nitride changed the charge distribution. The high regular structure can wipe out the defect sites, reducing recombined sites of electron and hole, and poly(heptazine imides) structure can greatly reserve the visible light absorption ability from pristine carbon nitride. Benefiting from these excellent features, the resultant product exhibits excellent photocatalytic hydrogen evolution activity, which is about 23 times higher than that of bulk carbon nitride.
研究领域:
材料化学
·
光催化
·
能源材料
·
无机合成
·
半导体物理
·
太阳能转化
·
纳米催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）