JOURNAL OF CATALYSIS
·
2018
·
IF 6.759
Na Tong,Ying Wang,Yang Liu,Minbo Li,Zizhong Zhang,Huijuan Huang,Tao Sun,Jinxiang Yang,Fuying Li,Xuxu Wang
Photocatalytic ammonia synthesis is of great importance but remains very challenging in photocatalysis. Here, we fabricated a photocatalytic reaction system for the efficiently photocatalytic nitrate reduction to ammonia under UV irradiation using PdSn/NiO/NaTaO 3 :La as a photocatalyst in the presence of formic acid. Several important factors of the photocatalytic performance were investigated, including initial concentration of the nitrate solution, initial pH value and cocatalyst loadings. Nitrate conversion reaches 100% and ammonia selectivity is 72% over the optimum photocatalyst with 5% bimetallic PdSn alloy and 0.2% NiO loadings. The outstanding performance of photocatalyst can be ascribed to both the strong adsorption of nitrite on NiO and the efficient separation of electron-hole pairs by PdSn bimetallic alloy. Besides as the hole scavenger, formic acid also provides not only carboxyl anion radicals for nitrate reduction but also the in-situ buffer effect on ammonia formation. These results give inspiration for designing the reactive system with efficient photocatalytic ammonia synthesis.
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高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 51
·期 5
·1979-1984
·
IF 4.39
Huaiyu Hu,Junben Huang,Zhiyong Guo,Min Zhang,Zhihua Yang,Shilie Pan
The first alkaline earth metal borate-nitrate, namely Ba2B5O8(OH)2(NO3)·3H2O (BBNOH), has been synthesized by the hydrothermal method. BBNOH crystallizes in the space group of P21/c and shows two-dimensional (2D) 2∞[B5O8(OH)2]3− borate anion layers, and the hydrated barium cations and the [NO3]− anions are located between the layers. The process of optimizing the structure of Ba2B5O8(OH)2OH to BBNOH has been discussed. The first principles calculation has been used to calculate the birefringence of Ba2B5O8(OH)2(NO3)·3H2O, and the value is 0.033@1064 nm, which is mainly originated from the borate anions and the π conjugated [NO3]− anions.
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高影响因子
Energy Storage Materials
·
2019
·
IF 0
Yuanming Liu,Xianying Qin,Dong Zhou,Heyi Xia,Shaoqiong Zhang,Guohua Chen,Feiyu Kang,Baohua Li
Lithium nitrate (LiNO 3 ) has been widely applied as an additive to effectively protect lithium (Li) metal anode via enhancing the interfacial stability. However, few researches have been carried out to protect Li metal anode with LiNO 3 in carbonate electrolyte, because of its sparingly solubility. Herein, we propose a concept of sustainably and controllably releasing NO 3 − in carbonate electrolyte by intercalating superfluous LiNO 3 particles between bi-layer polypropylene (PP) membranes (PP/LiNO 3 /PP). The sandwiched biscuit-like configuration prevents the direct attachment of non-conducting LiNO 3 to active materials, facilitating the battery operation. Moreover, this construction is conductive to form uniform and stable solid electrolyte interphase (SEI) in virtue of Li–N compounds on Li metal by slow but continuous releasing of NO 3 − from LiNO 3 particles. Li metal anode with the PP/LiNO 3 /PP configuration showed a high Coulombic efficiency of over 95.3% after 550 cycles at a current density of 1 mA cm −2 . When paired with LiNi 0.80 Co 0.10 Al 0.10 O cathode, the Li metal full cell with the intercalated LiNO 3 particles could deliver a discharge capacity of 103.8 mAh g −1 at the 500th cycle at 1C current density, which is far superior to the performance of the cell without LiNO 3 additive. More profoundly, the PP/LiNO 3 /PP configuration is also applicable to the commercialized anode such as Silicon-Graphite to improve the electrochemical performance prominently. This strategy is not only a facile and efficient way in protecting Li metal anode, but also a universal method enabling the additives with sparingly solubility to be widely used in modern energy industries.
研究领域:
储能
·
电化学
·
材料科学
·
锂离子电池
·
电池技术
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Inorganic Chemistry Frontiers
·
2023
·Vol. 11
·期 1
·107-113
·
IF 7
Zihao Yu,Qingran Ding,Yuhang Jiang,Weiqi Huang,Changsheng Yang,Sangen Zhao,Junhua Luo
The research on nonlinear optical (NLO) crystals is mainly focused on two relatively separate systems, π-conjugated or non-π-conjugated systems, respectively. In this work, we report a new NLO crystal Na10Zn(NO3)4(SO3S)4 combining inorganic π-conjugated [NO3] and non-π-conjugated heteroanion [S2O3] groups, which was synthesized by the aqueous solution method. In the structure, the similar coexistence of planar triangular anionic groups (π-conjugated) and heteroanion tetrahedra (non-π-conjugated) is rarely mentioned, which provides a new approach for designing NLO crystals. Notably, this compound exhibits a phase-matching second-harmonic generation (SHG) response 1.2 times that of KH2PO4. In addition, birefringence, absorption edge and theoretical calculations are also reported in this article. This work provides a new designing route to expand NLO systems via combining planar π-conjugated and non-π-conjugated heteroanion groups.
研究领域:
材料科学
·
光学材料
·
晶体化学
·
非线性光学
·
功能材料
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高影响因子
PLoS One
·
2020
·Vol. 15
·期 10
·e0240173
·
IF 2.74
Lei Zhang,Zhengying Wei,Pengcheng Liu
To improve the single-layer all-solid-state ion selective electrode’ defects including poor conductivity of PVC sensitive membrane and interference of water layer between substrate electrode and sensitive membrane, a double-layer all-solid-state ion selective electrode with nanomaterial as the solid contact layer and conductive polymer as the ion sensitive membrane was developed. A gold nanoparticles solid contact layer and a nitrate-doped polypyrrole molecularly imprinted polymer membrane were prepared by electrodeposition. The optimal parameters obtained by electrochemical performance test were 2.5 mmol/L HAuCl 4 electrolyte for solid contact layer and 1800s electrodeposition time for sensitive membrane. The new electrode exhibited a Nernstian response of -50.4 mV/decade and a low detection limit of 5.25×10 -5 mol/L. Potentiometric water layer test showed no water film formed between the gold nanoparticles solid contact layer and nitrate-doped polypyrrole molecularly imprinted polymer membrane. The contact angle between droplet and the surface of solid contact layer was 112.35° and showed good hydrophobic property. Furthermore, the developed electrode exhibited fast response, excellent potential stability and long lifetime. This electrode is suitable for the detection of nitrate concentration in water and liquid fertilizer.
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PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Zhiru Li,Ying Lv,Xuelian Chen,Meixia Xiao,Lei Wang,Xiaoxuan Li,Yumin Li
Aiming at the challenges such as wide band gap, limited surface reactivity, and sluggish reaction kinetics of the promising Aurivillius compound Bi 2 O 2 (OH)NO 3 (BON). Our endeavors culminated in the successful creation of layered BON nanoplates featuring surface oxygen vacancies and Pd nanoparticles deposition by UV light irradiation, elegantly designated as Pd-OVs BON. This accomplishment was realized through the adept application of a two-step photoreduction technique, skillfully executed in both pristine water and ethanol-water environments. We then evaluated the effectiveness of Pd-OVs BON in degrading a series of tetracycline antibiotics. Our evaluation involved a comprehensive approach, encompassing systematic morphology characterization and photoelectrochemical analysis. Additionally, we investigated how surface oxygen vacancies and the plasma effects of Pd impact the separation and transport of photogenerated carriers, as well as the photocatalytic performance. The outcomes of this study indicate that Pd-OVs BON holds substantial potential for the photodegradation of antibiotics. Its layered nanoplates structure enhances the specific active surface area of BON, while the surface oxygen vacancies generated through photoreduction create more active sites for catalyzing antibiotic degradation reactions. Furthermore, the introduction of Pd nanoparticles onto the OVs-BON surface during the secondary photoreduction process induces localized surface plasmon resonance. This phenomenon broadens the photocatalyst's responsiveness to a wider range of light wavelengths, enabling efficient utilization of visible light and facilitating the effective decomposition of antibiotic molecules.
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Huiyuan Cheng,Jingwei Hu,Zihan Liu,Guangping Lei,Guojun Xi,Yayun Zhang,Hantao Liu,Xuhuan Guo,Huiyun Ren
Developing novel adsorbents for CO 2 capture and separation offers an efficient approach to relieving global environmental problems. To promote CO 2 capture from flue gas, novel Cr 3 O@MIL-101(Cr) composites was synthesized through packing [Cr 3 O(HCOO) 6 (H 2 O) 3 ]NO 3 into MIL-101(Cr) cages. The resultant composite Cr 3 O@MIL-101(Cr) presents higher CO 2 uptakes at lower pressure ranges, benefiting from the increased content of unsaturated Cr(III) ions and micropores relative to MIL-101(Cr). Meanwhile, IAST selectivity for CO 2 /N 2 mixture reached 50.2 under standard temperature and pressure, outperforming most of the reported materials. Further GCMC simulations reveal that the synergistic effect of [Cr 3 O(HCOO) 6 (H 2 O) 3 ] + , NO 3 − and MIL-101 (Cr) could effectively facilitate the interactions with CO 2 molecules and hinder N 2 molecules from approaching the optimal adsorption sites. Thus the [Cr 3 O(HCOO) 6 (H 2 O) 3 ]NO 3 encapsulated MIL-101(Cr) can be recommended as a promising adsorbent for superior CO 2 /N 2 separation.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Jimei Xue,Xiaoling Liu,Yuqiu Wang,Hepeng Zhao,Xiaomeng Fan
Oxide ceramic matrix composites (OCMC) have good high-temperature resistance, oxidation resistance, and mechanical properties. However, the microwave absorbing properties of OCMC areinsufficient due to the low dielectric and low loss characteristics of oxide ceramics, so it is urgent to develop a kind of the oxide ceramic matrix with adjustable microstructure and electromagnetic properties. PDC-SiOC ceramics are the optimal oxide ceramics whose component and microstructure can be adjusted by rare earth nitrate modified polysiloxane precursor. For Sc(NO 3 ) 3 modified PDC-SiOC ceramics, rare earth metals not only can react with siloxy groups to form silicates at high temperatures but also can catalyze the formation of SiCnws. Herein, rare earth nitrate modified polysiloxane precursor was pyrolyzed at 900°C, and then annealing at high temperature to form silicate and SiCnws. After annealing at 1400°C, a large amount SiCnws was in situ formed conductive network structure in SiOC ceramic, so the SiOC ceramic with SiCnws had great electromagnetic wave (EMW) absorbing properties, the maximum effective absorption bandwidth (EAB max ) and the minimum reflection coefficient (RC min ) at the thickness of 2.75 mm reach 4.0 GHz and −42.3 dB in X -band, respectively. By the double-layer impedance matching design, the EAB can be effectively improved, which provide a good way for the design and fabrication of OCMC with advanced (EMW) absorbing properties.
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高影响因子
Nanoscale
·
2024
·Vol. 16
·期 36
·16933-16941
·
IF 5.8
Xinyu Feng,Siwen Zhang,Jiazhuo Li,Yingfang Hu,Rongyuan Ge,Yaowen Shi,Yali Yao,Bosi Yin,Tianyi Ma
Ni3(NO3)2(OH)4 has a high theoretical specific capacitance, low cost, and environmental friendliness, making it a promising electrode material. Specifically, Ni3(NO3)2(OH)4 electrodes have a larger layer spacing (c = 6.898 Å) than Ni(OH)2 electrodes since NO3− has a much larger ionic radius than OH−. The larger layer spacing stores more electrolyte ions, significantly improving the electrochemical activity of the electrodes. Additionally, the interlayer NO3− can enhance the structural stability of Ni3(NO3)2(OH)4. However, since Ni3(NO3)2(OH)4 has a higher molar mass than Ni(OH)2, it has a lower theoretical specific capacity. Consequently, Ni3(NO3)2(OH)4 has not been used in zinc-based alkaline batteries. Studies showed that doping could enhance the electrochemical performance of electrode materials. Therefore, this study used a simple solvothermal reaction to synthesize yttrium-doped Ni3(NO3)2(OH)4 (Y-Ni3(NO3)2(OH)4), assembling a Y-Ni3(NO3)2(OH)4//Zn battery for electrochemical testing. Y-Ni3(NO3)2(OH)4 served as the cathode in the battery. The analysis of Y-Ni3(NO3)2(OH)4 showed that yttrium (Y) doping increased the specific surface area and pore size of Ni3(NO3)2(OH)4 significantly. The increased specific surface area improved the active material utilization, and the abundant mesopores facilitated OH− transport, substantially enhancing the battery's specific capacity and energy density. Ultimately, the specific discharge capacity of the advanced Y-Ni3(NO3)2(OH)4//Zn battery reached 177.97 mA h g−1 at a current density of 4 A g−1, nearly doubling the capacity of the earlier Ni3(NO3)2(OH)4//Zn battery (103.59 mA h g−1).
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Kaiyue Yang,Pengfei Zhou,Lin Hao,Jinsheng Liang
Solar-driven photodegradation technology is a highly promising route for resolving environmental pollutants. However, the performance of photocatalysts is usually limited by the poor light harvesting, the high recombination of photogenerated electron-hole pairs, and the insufficient surface active sites. In this work, thin Bi 2 O 2 (OH)(NO 3 ) nanosheets co-modified with oxygen vacancies and bromine-grafting (BNSBr-OV) presented a superb rhodamine B photodegradation efficiency of 98.5 % within 4 h under visible light (λ＞420 nm), which was 8.2 times higher than that of pristine Bi 2 O 2 (OH)(NO 3 ). Besides, BNSBr-OV exhibited universal photocatalytic abilities of degrading various antibiotics, including tetracycline hydrochloride, ofloxacin and sodium sulfacetamide. The introduction of oxygen-vacancy and grafted bromine dual active sites can not only improve the light harvesting ability of the photocatalyst, but also promote the migration efficiency of photogenerated carriers, which boosts its photocatalysis performance. This study provides a platform for understanding the dual active sites modified single-crystal material, which potentially offers new design of environmental catalysts for multiple applications.
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高影响因子
Small Methods
·
2026
·Vol. 10
·期 4
·e01991
·
IF 9.1
Huiling Liu,Xingkai Jia,Xuan Zhang,Lihua Feng,Hongge Pan,Mi Yan,Yinzhu Jiang
Metal-organic frameworks (MOFs) are promising hosts for quasi-solid electrolytes (QSEs) by integrating liquid electrolytes (MOF@LE QSEs), yet stabilizing lithium metal anodes (LMAs) to enhance electrochemical performance remains a challenge. Here, we introduce a strategy leveraging open metal sites (OMSs) in HKUST-1 (Cu 3 (BTC) 2 ) combined with LiNO 3 to tailor solid electrolyte interphase (SEI) chemistry and lithium deposition. OMSs in HKUST-1 anchor NO 3 − and promote LiNO 3 dissociation, enriching SEI with nitrogen-containing inorganic compounds and enabling uniform and spherical lithium morphology. Consequently, LMAs with LiNO 3 -incorporated HKUST-1 membrane QSE (HM-LN QSE) achieve a critical current density of 2.7 mA cm −2 , with stable lithium plating/stripping over 650 h at 0.2 mA cm −2 and more than 300 h at 0.5 mA cm −2 . Moreover, LiLiFePO 4 cells assembled with HM-LN QSEs delivere a discharge capacity of 81.2 mAh g −1 at 5 C and retain 81.2% capacity after 350 cycles at 2 C, demonstrating superior electrochemical stability and performance. This innovative MOF-based approach significantly enhances SEI stability and LMA performance, advancing lithium metal battery technology.
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高影响因子
RADIATION PHYSICS AND CHEMISTRY
·
2026
·
IF 3.5
Hyeong Gu Kang,Han Cheol Yang,Bartosz Mindur,Tomasz Szumlak,Yong Kyun Kim
Plastic scintillators inherently suffer from the limitation of low gamma-ray counting efficiency due to their low atomic number (Z). To address this, this study explored the incorporation of lead (II) nitrate (Pb(NO 3 ) 2 ), a high-Z material, into a photocurable resin. The Pb(NO 3 ) 2 -loaded plastic scintillators were fabricated using Digital Light Processing (DLP) type 3D printing, wherein dimethyl sulfoxide (DMSO) was employed as a co-solvent to ensure uniform dispersion of the Pb(NO 3 ) 2 within the polymer matrix. This uniform dispersion was confirmed by Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS) analysis of the scintillator's cutting surface. The evaluation of scintillation properties showed that the scintillator loaded with 5 wt% of Pb(NO 3 ) 2 exhibited a gamma-ray counting efficiency for a 137 Cs source that was 1.64 times higher than that of the commercial plastic scintillator, BC408. Although the optical transmittance decreased due to the addition of Pb(NO 3 ) 2 and DMSO, the 5 wt% Pb(NO 3 ) 2 sample maintained a relative light output of 55.51% compared to BC408. Additionally, the fast timing characteristics were preserved, with the loaded scintillators exhibiting a decay time of 3.23–3.41 ns, nearly identical to that of the unloaded sample.
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