JOURNAL OF POWER SOURCES
·
2013
·
IF 4.675
Kaiqiang Wu,Dongjie Wang,Lianyi Shao,Miao Shui,Rui Ma,Mengmeng Lao,Nengbing Long,Yuanlong Ren,Jie Shu
For the first time, Cu(NO 3 ) 2 · x H 2 O ( x ≤ 2.5) is investigated as a new lithium storage anode material for lithium-ion batteries. The impressive characteristic of Cu(NO 3 ) 2 · x H 2 O( x ≤ 2.5)/Li cell is the high initial discharge capacity reaching to around 2200 mAh g −1 . To make a comparison, Cu(NO 3 ) 2 ·2.5H 2 O electrodes are used as raw materials and heat-treated at 80, 120 and 160 °C. Among all the three samples, Cu(NO 3 ) 2 · x H 2 O ( x < 2.5) obtained at 160 °C shows the highest reversible capacity of 597.6 mAh g −1 and the best cycling stability after 30 cycles. The difference in electrochemical behaviors is attributed to the variation of surface morphology , crystal water and particles size after heat-treatment at different temperatures. Besides, the thermal reaction results also show that Cu(NO 3 ) 2 · x H 2 O ( x < 2.5) obtained at 160 °C has the highest thermal stability among all the three samples after repeated cycles. The present findings can provide the fact that Cu(NO 3 ) 2 · x H 2 O (≤2.5) may be a promising anode material for lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Jiaqi Li,Ziming Shang,Ying Meng,Qianrui Lv,Fubo Luan
TiO 2 -based photocatalytic nitrate reduction is highly efficient for nitrate treatment. However, TiO 2 powders present challenges in recovery and reuse, necessitating immobilization to enhance recyclability. Additionally, existing research primarily focuses on the role of photogenerated electrons in nitrate removal, neglecting the impact of simultaneously generated free radicals on the reaction. To investigate the synergistic effects of electrons and free radicals in recyclable photocatalytic nitrate reduction, this study layered TiO 2 with specific crystal facets and a silver coating on a recyclable plane. Results indicate that hydroxyl radicals (·OH) can reoxidize ammonia nitrogen, inhibiting the interfacial reduction process and adversely affecting nitrate removal. Exposing the reductive (101) crystal facet and depositing silver nanoparticles helps promote electron migration to the nanoparticle surface for participation in the reduction process, while reducing free radical formation. This approach increases the nitrate degradation rate by 2.38 times compared to TiO 2 with the exposed (001) crystal facet. In contrast, the photocatalytic reduction efficiency of TiO 2 with exposed oxidative (001) crystal facet is reduced due to increased free radical formation influenced by surface positive charges. This study provides a cost-effective and reusable solution for nitrate removal in water, enhancing its potential in practical water treatment applications.
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
Inorganic Chemistry Frontiers
·
2026
·
IF 6.2
Hussin Elkik,Muhammad Mujahid Iqbal,Aqsa Munawar,Zhihua Yang,Fangfang Zhang,Shilie Pan
The progress of all-inorganic Ruddlesden–Popper (RP) perovskites broadens the selection of materials suitable for optoelectronic applications, especially in improving stability and performance. Two new alkali metal calcium halide nitrate-based layered RP perovskite variants, Rb2Ca(NO3)2Cl2 and Cs2Ca(NO3)2Cl2, have been synthesized through a facile solution evaporation method. Remarkably, the title compounds exhibit a unique RP perovskite-like nitrate layered structure with significant birefringence (0.099–0.104@546 nm) and short ultraviolet (UV) absorption wavelengths (220–225 nm). In-depth structural investigation and theoretical analyses indicate that the birefringence substantially arises from the planar triangular [NO3] groups. This study not only enhances the structural diversity of layered perovskites but also provides an effective strategy for the continued investigation of all-inorganic birefringent optical materials in the UV region.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·Vol. 51
·期 14
·18384-18391
·
IF 5.1
Fangliang Shen,Bingheng Sun,Tao Feng,Conghui Huang,Yin Hang,Benxue Jiang,Long Zhang,Jintai Fan
This work aims to fabricate the Yb:LuScO 3 sesquioxides transparent ceramics for use in ultrafast and ultrashort laser technology. 1 at.% Yb:LuScO 3 nanopowders were fabricated using the glycine-nitrate process. ZrO(NO 3 ) 2 was selected as the precursor of ZrO 2 which functions as a sintering aid. Yb:LuScO 3 transparent ceramics with different ZrO 2 content were fabricated by vacuum sintering at 1780 °C and HIPing at 1650 °C, among which the ceramic with 7 at.% ZrO 2 showed the highest transmittance, reaching 81 % at 2000 nm. The ceramic achieved a maximum output power of 1.5 W at 1038 nm with a slope efficiency of 34.8 % and tunable wavelength range exceeding 22 nm. The results demonstrated that Yb:LuScO 3 transparent ceramics can be considered as promising materials in 1 μm solid-state laser applications.
研究领域:
材料科学
·
光学工程
·
固体激光技术
·
无机非金属材料
·
先进陶瓷
✓ 已验证
DOI
高影响因子
IONICS
·
2019
·Vol. 25
·期 8
·3859-3866
·
IF 2.289
Bao Wentao,Tian Hua,Jiang Yang,Zhu Kaixin,Zhang Runa,Tan Yu,Li Wang,Yu Zhifeng,Wang Lin
Ni–Al layered double hydroxide with nitrate anions as interlayer building blocks was synthesized by a dual-anion intercalating strategy of hydroxyl and nitrate anions during a facile co-precipitation process. In this case, nitrate anions with low charge densities are capable to expand the interplanar spacing between host layers of Ni–Al layered double hydroxide in the replacement of pristine carbonate anions, benefiting to the diffusion of electrolyte ions to active sites within electrodes. Moreover, the optimization for packed arrangement of Ni–Al layered double hydroxide with nitrate anions nanosheets can be effectively realized by modulating reactant concentrations, leading to the formation of nanolayered structure in favor of increasing electrolyte accessible active sites within electrodes. The optimized Ni–Al layered double hydroxide with nitrate anions achieves a high specific capacitance of 1616 F g −1 at 1 A g −1 together with a capacitance retention of 82% at 10 A g −1 and good cycling stability.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Canadian Journal of Chemistry
·
2018
·Vol. 96
·期 8
·
IF 1.084
Yongshu Li,Nizhou Xu,Guangyao Mei,Yun Zhao,Yiyong Zhao,Jinghui Lyu,Guofu Zhang,Chengrong Ding
A mild, simple process for the effective aerobic oxidative deoximation of a wide range of ketoximes and aldoximes has been developed that utilizes Fe(NO3)3·9H2O as the single catalyst and molecular oxygen as the green oxidant. The environmentally benign protocol provides moderate to excellent yield and broad functional groups tolerance and is a valuable synthetic method for practical applications. According the relevant verification experiment, a plausible mechanism has been proposed.
研究领域:
有机化学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE SCIENCE BULLETIN
·
2010
·Vol. 55
·期 35
·4018-4025
·
IF 0.917
Wang XiaoPeng,Tong ShengRui,Ge MaoFa,Wang WeiGang,Wang DianXun
The electronic structures of six mono-terpenoids and two of their oxygenated derivatives were studied by He I photoelectron spectroscopy (PES). The observed bands were interpreted on the basis of empirical arguments and theoretical calculations. The first vertical ionization potentials for β -pinene, α -terpinene, terpinolene, γ -terpinene, limonene, myrcene, citral, and terpinene-4-ol were determined to be 8.73, 7.57, 8.26, 8.30, 8.53, 8.68, 8.71, and 8.77 eV, respectively. Most of these values have not been determined by PES before. The correlations of the first vertical ionization potentials of these compounds to the natural logarithms of rate constants for their reactions with the radicals OH, NO 3 , and O 3 were determined. The correlation coefficients for their reactions with OH, NO 3 , and O 3 were 0.97, 0.91, and 0.95, respectively. This method is a powerful technique for predicting the rate constants for the atmospheric oxidation reactions of terpenoids.
研究领域:
物理化学
·
大气化学
·
环境科学
✓ 已验证
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 37
·2400549
·
IF 13
Yaoguo Shen,Mingliang Ding,Gang Chen,Yingjie Luo,Sangen Zhao,Junhua Luo
A large optical anisotropy is the most important parameter of birefringent crystals. Integrating π-conjugated groups with large polarizable anisotropy into target compounds is a common strategy for constructing brilliant birefringent crystals. However, the key problem is to enhance the density of the birefringence-active units and further arrange them parallelly. In this study, three novel birefringent crystals, C 9 H 7 NBrX (X = Cl, Br, NO 3 ), are successfully synthesized by introducing a new birefringence-active [C 9 H 7 NBr] + unit. Interestingly, these compounds feature similar layered structures but exhibit different optical anisotropies at 550 nm (0.277 for C 9 H 7 NBrCl, 0.328 for C 9 H 7 NBrBr, and 0.401 for C 9 H 7 NBrNO 3 ) owing to the different anions in them. Particularly, the small trigonal planar NO 3 anions perfectly fill the interstices of the π-conjugated [C 9 H 7 NBr] + groups with large optical anisotropy, with the resulting compound C 9 H 7 NBrNO 3 showing superior optical properties compared to the others. The above findings provide strategies for designing new optical materials with large birefringence by matching birefringence-active groups of different sizes. Additionally, a new theory for predicting and comparing the polarizability anisotropy of compounds is proposed, which would guide in exploring large birefringent crystals.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MARINE POLLUTION BULLETIN
·
2026
·
IF 4.9
Diyi Liu,Lu Liu,Ping Yin,Yan Tian,Jing Zhang
17β-Estradiol (E2), a typical endocrine-disrupting chemical, is widely detected in various aquatic environments, including rivers, lakes, groundwater, estuaries, and coastal waters, posing significant ecological and health risks. Photodegradation is a key pathway for the transformation and removal of E2 from aquatic systems. This study investigated the effects of dissolved organic matter (DOM) from different sources and common inorganic anions (Cl − and NO 3 − ) on E2 photodegradation under simulated solar irradiation. The results indicated that the excited triplet state of DOM ( 3 DOM*), generated upon light absorption, was the key reactive species driving E2 photodegradation. Among the DOM sources examined, humic acid exhibited the strongest promotive effect on E2 photodegradation. Correlation analysis confirmed that terrestrial humic-like components within seawater DOM were the primary contributors to 3 DOM* formation. Seawater DOM from nearshore areas exhibited higher steady-state concentrations of 3 DOM* owing to greater terrestrial input. Both Cl − and NO 3 − effectively accelerated E2 photodegradation, and the E2 degradation rate increased with their concentrations. In contrast, the coexistence of Cl − , NO 3 − , and DOM inhibited E2 photodegradation. In DOM-dominated systems, the main transformation pathways of E2 involved oxidation and hydrolysis reactions on the phenolic ring. This study elucidates the effects of DOM source and water chemical composition on E2 photodegradation, which is crucial for accurately predicting its environmental fate and ecological risks. Moreover, the findings provide valuable insights into the photochemical transformation of other emerging organic contaminants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Shuyang Shi,Baozhong Ma,Ding Zhao,Xiang Li,Shuang Shao,Chengyan Wang,Yongqiang Chen
The new process ‘coal gangue/fly ash – HNO 3 pressure leaching (NAPL) –low-temperature pyrolysis’ was proposed by our team, which aimed to achieve the transformation of coal-based solid wastes from harmless to Al resource. For cost control, the regeneration of HNO 3 at a low cost was crucial for the process. Following NAPL of coal gangue and fly ash, massive amounts of Al(NO 3 ) 3 ·9 H 2 O were collected, with a decomposition temperature as low as 523 K. The energy consumption for low-temperature pyrolysis could be supplied by the combustion of residual carbon (6.96 wt%) during the thermal activity of coal gangue, allowing HNO 3 to be regenerated and recycled without extra heat supply . However, little research has been done on the pyrolysis behavior and kinetics of Al(NO 3 ) 3 ·9 H 2 O, which was examined in this study. The pyrolysis characteristics of Al(NO 3 ) 3 ·9 H 2 O were assessed by TG-DSC analysis. Further experiments and XRD/FTIR/MS analysis revealed that phase evolution of Al(NO 3 ) 3 ·9 H 2 O followed the sequence of Al(NO 3 ) 3 ·9 H 2 O→ Al(NO 3 ) 3 ·nH 2 O→ Al(NO 3 ) 3 ·3Al(OH) 3 ·5/2 H 2 O→ AlOOH→ Al 2 O 3 . Subsequently, the thermodynamic (∆ G , ∆ H , ∆ S ) and kinetic ( E a , A ) parameters were calculated based on the thermogravimetric data by the iso-conversional methods. And the mechanism models and functions were identified via the Malek method. Finally, the economic evaluation of pyrolysis indicated that 5.04 × 10 –3 Nm 3 of natural gas was consumed during pyrolysis of one mole Al(NO 3 ) 3 ·9 H 2 O, equivalent to 44.33 $ per ton of Al 2 O 3 . As a basic research of Al(NO 3 ) 3 ·9 H 2 O pyrolysis, this paper enhances related theories of the NAPL process.
研究领域:
材料科学
·
热工工程
·
无机化学
·
废弃物资源化
·
过程工程
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY A
·
2018
·
IF 2.836
Shuyan Wang,Lin Du,Jianqiang Zhu,Narcisse T. Tsona,Shijie Liu,Yifeng Wang,Maofa Ge,Wenxing Wang
Allyl acetate (AA) is widely used as monomer and intermediate in industrial chemicals synthesis. To evaluate the atmospheric outcome of AA, kinetics and mechanism of its gas-phase reaction with main atmospheric oxidants (O3, OH, Cl, and NO3) have been investigated in a Teflon reactor at 298 ± 3 K. Both absolute and relative rate methods were used to determine the rate constants for AA reactions with the four atmospheric oxidants. The obtained rate constants (in units of cm3 molecule–1 s–1) are (1.8 ± 0.3) × 10–18, (3.1 ± 0.7) × 10–11, (2.5 ± 0.5) × 10–10, and (1.1 ± 0.4) × 10–14, for reactions with O3, OH, Cl, and NO3, respectively. While results for reactions with O3, OH and Cl are in good agreement with previous studies, the kinetics for the reaction with NO3 is reported for the first time in this study. On the basis of determined rate constants, the tropospheric lifetimes of AA are τO3 = 9 days, τOH = 5 h, τCl = 5 days, τNO3 = 2 days. On the basis of the products study, reaction mechanisms for these oxidations have been proposed and the reaction products were detected using thermal desorption–gas chromatography–mass spectrometry (TD–GC–MS) and Fourier transform infrared spectroscopy (FTIR). Results show that the main products formed in these reactions are carbonyl compounds. In particular, 2-oxoethyl acetate was detected in all four AA oxidation reactions. Compared to previous studies, several new products were determined for reactions with OH and Cl. These results form a set of comprehensive kinetic data for AA reactions with main atmospheric oxidants and provide a better understanding of the degradation and atmospheric outcome of unsaturated acetate esters in the troposphere, during both daytime and nighttime.
研究领域:
大气化学
·
环境科学
·
反应动力学
·
空气污染
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY A
·
2017
·
IF 2.847
Jianqiang Zhu,Shuyan Wang,Narcisse T. Tsona,Xiaotong Jiang,Yifeng Wang,Maofa Ge,Lin Du
Rate constants at room temperature (293 ± 2 K) and atmospheric pressure for the reaction of methyl n-propyl ether (MnPE), CH3OCH2CH2CH3, with OH and NO3 radicals and the Cl atom have been determined in a 100 L FEP-Teflon reaction chamber in conjunction with gas chromatography-flame ionization detector (GC-FID) as the detection technique. The obtained rate constants k (in units of cm3 molecule–1 s–1) are (9.91 ± 2.30) × 10–12, (1.67 ± 0.32) × 10–15, and (2.52 ± 0.14) × 10–10 for reactions with OH, NO3, and Cl, respectively. The products of these reactions were investigated by gas chromatography-mass spectrometry (GC-MS), and formation mechanisms are proposed for the observed reaction products. Atmospheric lifetimes of the studied ether, calculated from rate constants of the different reactions, reveal that the dominant loss process for MnPE is its reaction with OH, while in coastal areas and in the marine boundary layer, MnPE loss by Cl reaction is also important.
研究领域:
大气化学
·
环境科学
·
化学动力学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）