Desalination and Water Treatment
·
2014
·
IF 0.987
Ling Li,Jun Cheng Li,Zhuang Rao,Gong Wu Song,Bin Hu
The adsorpion of methylene blue from aqueous solution on a highly porous metal-organic framework material [Cu3(BTC)2(H2O)3] was studied in conjunction with the adsorption isotherm, kinetics and regenerate of the sorbent. The adsorption isotherms of methylene blue on [Cu3(BTC)2(H2O)3] followed both the Freundlich isotherm and the Langmuir adsorption isotherm. Adsorption kinetics was determined from the experimental data, and the results showed that the adsorption obeyed a pseudo-second-order kinetics. The best oscillate time and the best [Cu3(BTC)2(H2O)3] amount were discussed, and [Cu3(BTC)2(H2O)3] gave high adsorption in only 5 minutes. The used [Cu3(BTC)2(H2O)3] could be regenerated by glycol solution, thus recycled. SEM image and FT-TR spectra of recycled [Cu3(BTC)2(H2O)3] after different adsorption times were compared. The high adsorption capacity and excellent reusability make [Cu3(BTC)2(H2O)3] attractive for the removal of methylene blue from aqueous solution.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Yali Niu,Rui Yao,Shuhui Fan,Jinping Li,Guang Liu
Anion-exchange membrane water electrolyzers (AEMWE) are promising for clean hydrogen production. However, the high energy barriers associated with water adsorption and dissociation combined with the high adsorption energy of hydrogen intermediates (H*) in alkaline environment result in slow kinetics for the hydrogen evolution reaction (HER). To tackle this, we report a catalyst comprising Pt nanoparticles loaded on Co(OH) 2 /PTI nanosheets (Pt/Co(OH) 2 /PTI) for efficient alkaline HER at high current densities. Operando characterization indicates that Co(OH) 2 promotes H 2 O adsorption and dissociation, while the Pt nanoparticles optimize H* adsorption energy, enabling preferential H* adsorption at the Pt site to facilitate H 2 generation and desorption. Furthermore, the ultra-thin poly (triazine imide) (PTI) support prevents the Pt nanoparticles aggregation, thereby enhancing catalyst stability. As a result, the synergistic Pt/Co(OH) 2 /PTI achieves superior HER performance, demanding an overpotential of merely 7 mV to achieve a current density of 10 mA cm −2 and just 220 mV to drive 1 A cm −2 , and it maintains stable for over 220 h under the condition of 1 A cm −2 . Additionally, the electrolyzer assembled using Pt/Co(OH) 2 /PTI as the cathode demonstrates stable operation for 200 h at 0.5 A cm −2 under 70 °C, highlighting its strong potential for industrial applications.
研究领域:
电催化
·
能源化学
·
材料科学
·
纳米催化
·
氢能技术
·
电化学工程
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DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 70
·42619-42627
·
IF 3.119
Haoshan Wei,Jingyi Cai,Yong Zhang,Xueru Zhang,Elena A. Baranova,Jiewu Cui,Yan Wang,Xia Shu,Yongqiang Qin,Jiaqin Liu,Yucheng Wu
Single crystalline strontium titanate (SrTiO3) submicron cubes have been synthesized based on a molten salt method. The submicron cubes showed superior photocatalytic activity towards both water splitting and carbon dioxide reduction, in which methane (CH4) and hydrogen (H2) were simultaneously produced. The average production rate of methane up to 8 h is 4.39 μmol g−1 h−1 but drops to 0.46 μmol g−1 h−1. However, the average production rate of hydrogen is 14.52 before 8 h but then increases to 120.23 μmol g−1 h−1 after 8 h. The rate change of the two processes confirms the competition between the H2O splitting and CO2 reduction reactions. Band structure and surface characteristics of the SrTiO3 submicron cubes were characterized by diffuse reflective UV-Vis spectroscopy, Mott–Schottky analysis, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The results reveal that the simultaneous and competitive production of methane and hydrogen is due to a thermodynamics factor, as well as the competition between the adsorption of carbon dioxide and water molecules on the surface of the faceted SrTiO3. This work demonstrates that SrTiO3 photocatalysts are efficient in producing sustainable fuels via water splitting and carbon dioxide reduction reactions.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Bingbing Hu,Maocong Hu,Qiang Guo,Kang Wang,Xitao Wang
In this work, a series of In(OH) 3 with abundant indium vacancies were synthesized by hydrothermal method using mixed solvent of ethylenediamine(En) and water for photocatalytic reduction of CO 2 with H 2 O vapor. The morphology, particle size, crystallinity, pore structure, and vacancy concentration of photocatalysts were successfully regulated by adjusting the ratio of En and water in mixed solvent, which were characterized by XRD, FT-IR, TG-DTA, SEM, HRTEM, UV–vis DRS, PL spectra, XPS, and EPR. Moreover, the effect of En/water ratio on the adsorption capacity to CO 2 and photo-electrical properties of In(OH) 3 were further investigated by in-situ FTIR, PL spectra, UV–vis DRS, CV, and EIS. In(OH) 3 prepared in mixed solution exhibited much higher photocatalytic activity for CO 2 reduction with H 2 O vapor compared to that prepared with water only solvent. The enhanced photocatalytic performance can be attributed to the special morphology, smaller particle size, larger BET surface area, and especially generated indium vacancies creating defect energy levels in the bandgap, which improved visible light absorption, carrier separation, and CO 2 chemisorption. This work paves the way to enable a non-visible-light response material with high visible-light photocatalytic activity by regulating vacancy concentration via a facile method.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2018
·Vol. 25
·期 5
·1221-1226
·
IF 5.16
Tushagu Abudouwufu,Min Zhang,Shichao Cheng,Zhihua Yang,Shilie Pan
The first rare earth metal iodate fluoride, Ce(IO 3 ) 2 F 2 ⋅H 2 O, was synthesized by a hydrothermal method. In the structure, CeO 5 F 4 polyhedra connect with isolated IO 3 groups to form 1D infinite [Ce(IO 3 ) 2 F 2 ] chains, which interconnect with each other by weak hydrogen bonds to construct the whole structure. Ce(IO 3 ) 2 F 2 ⋅H 2 O produces a large second harmonic generation response, which is three times that of potassium dihydrogenphosphate. Theoretical calculations with DFT and dipole moments were performed to illustrate the relationships between the structure and the properties. The results show that Ce(IO 3 ) 2 F 2 ⋅H 2 O is a new iodate fluoride with novel structure and potential applications in nonlinear optics. Graphical Highly responsive : The first rare earth metal iodate fluoride, Ce(IO 3 ) 2 F 2 ⋅H 2 O, which was synthesized by a hydrothermal method, exhibits a large second harmonic generation response, which is three times that of potassium dihydrogenphosphate (KDP; see figure).
研究领域:
材料科学
·
无机化学
·
非线性光学
·
固态化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Ke Zhang,Xu Zhao,Sihan Chen,Liping Chang,Jiancheng Wang,Weiren Bao,Hui Wang
In chemical cycles to produce hydrogen , the H 2 S splitting cycle and the sulfur-iodine (S I) water splitting cycle both share the Bunsen reaction and HI decomposition. Therefore, they have to overcome the same challenges in the technology development, one of them being the complex and difficult separations of the mixed hydroiodic acid and sulfuric acid solution after the Bunsen reaction. To avoid the separations, this paper studies the electrolysis of the HI/H 2 SO 4 /H 2 O/toluene mixture, focusing on the electrochemical characterization of the Pt electrode by using linear sweep voltammetry (LSV) and cyclic voltammetry (CV). The results show that hydrogen is identified from the gas generated from the cathode in electrolysis. Iodide oxidation is the main reaction in the anode chamber and no significant side reactions are observed. Iodine deposition on the anode surface increases the resistance to iodide diffusion to the anode. However, it can be mitigated by adding toluene in or applying stirring to the anolyte HI/H 2 SO 4 solution. The Pt cathode and sulfuric acid catholyte also work stably.
研究领域:
化学工程
·
电化学
·
可再生能源
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Guochao Wan,Wenhao Sun,Lei Liu,Changming Mao,Zhonghua Zhang,Xiaosong Guo,Guicun Li
Reducing the free radicals associated with electrochemical reactions and the activity of H2O is an effective measure to inhibit side reactions and improve stability for rechargeable aqueous Zn-ion batteries. Herein, methylsulfonylmethane (MSM), a popular dietary supplement for humans, is used as an innoxious and low-cost additive to scavenge free radicals and optimize the coordination condition for aqueous ZnSO4 electrolyte. Profiting from the double effects of MSM, the Zn∥Ti asymmetric cells exhibit excellent stability and display a high Coulombic efficiency (CE) of 99.5% in the aqueous MSM/ZnSO4 electrolyte for 1000 h, and the Zn∥Zn cells achieve a long cycle life of over 2000 h. In addition, MSM can effectively suppress the dissolution of an ammonium vanadate (NVO) cathode. The positive role of MSM is further exhibited in the Zn∥NVO and Zn∥PANI full cells, exhibiting outstanding charge/discharge performance and capacity retention. This work provides a type of innoxious additive for an aqueous electrolyte for aqueous rechargeable zinc-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Huimin Wang,Yihuan Yang
HPW/Fe 2 O 3 nanorod catalyst displays excellent NH 3 -SCR performance over a broad working window. • HPW/Fe 2 O 3 exhibits higher SO 2 and H 2 O resistance compared with bare Fe 2 O 3 nanorods. • The modification of Fe 2 O 3 with HPW enriches the surface reactive oxygen species and acid sites of catalyst. • The NH 3 -SCR reaction on HPW/Fe 2 O 3 obeys the L-H and E-R routes simultaneously. Exploiting denitration catalysts that integrate exceptional low-and-medium temperature catalytic activity with superior SO 2 and H 2 O tolerance remains a core bottleneck for practical NO x abatement in industrial flue gas treatment. Here, a novel HPW/Fe 2 O 3 nanorod catalyst with highly exposed (110) facet modified by phosphotungstic acid was successfully synthesized. Compared with pure Fe 2 O 3 nanorods, the HPW/Fe 2 O 3 catalyst with a 15% phosphotungstic acid loading exhibited the most outstanding catalytic performance, delivering nearly 100% NO x conversion and N 2 selectivity within the temperature window of 250–425 °C. The characterization results revealed that the interaction between HPW and Fe 2 O 3 generated more oxygen vacancies, which significantly enhanced the low-temperature NO x conversion of HPW/Fe 2 O 3 . Meanwhile, the abundant moderately strong acid sites inhibited the over-oxidation of NH 3 at high temperatures, thereby improving the high-temperature NO x conversion of HPW/Fe 2 O 3 . The introduction of HPW significantly suppressed SO 2 adsorption on the HPW/Fe 2 O 3 surface, endowing the catalyst with favorable tolerance toward the coexistence of H 2 O and SO 2 at 250 °C. Time-resolved in-situ transient measurements and kinetic analyses disclosed that the adsorbed NH 3 species on the HPW/Fe 2 O 3 surface were capable of reducing gaseous/adsorbed NO x simultaneously, following both the Eley-Rideal ( E -R) and Langmuir-Hinshelwood (L-H) routes. The phosphotungstic acid-modified HPW/Fe 2 O 3 catalyst is endowed with abundant active oxygen species and moderately strong acid sites, which greatly facilitates the NH 3 -SCR reaction proceeding via both the Eley-Rideal ( E -R) and Langmuir-Hinshelwood (L-H) pathways. Download: Download high-res image (160KB) Download: Download full-size image
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Qian Yang,Yunluo Wang,Futing Sun,Zesen Gao,Wen Chen,Yan Yang,Xun Yao,Minghui Wang,Yihui Xu,Lianjun Wang,Haijie Chen,Wan Jiang
Organic-inorganic hybrid metal halides (OIHMHs) have attracted considerable attention because of their superior optoelectronic properties and structural versatility, yet one-dimensional (1D) OIHMHs remain the least studied relative to their 0D, 2D, and 3D counterparts. Here, a new 1D blue-emitting hybrid cadmium chloride phosphor, (MBI)CdCl4·H2O, was constructed using 2-methylbenzimidazole (MBI) as the organic ligand. It crystallizes in the monoclinic P21/c space group, consisting of distorted [CdCl6]4– octahedra connected via edge sharing. Incorporation of Sb3+ ions with stereochemically active 5s2 lone-pair electrons yields (MBI)Cd0.7Sb0.2Cl4·H2O, which exhibits highly efficient yellow emission with a photoluminescence quantum yield (PLQY) of 92.0%. In addition, doping with high-spin Mn2+ ions produces photoluminescent (MBI)Cd0.85Mn0.15Cl4·H2O crystals with a PLQY of 16.7%. Leveraging the tunable luminescence of this Cd halide, these materials were further demonstrated in anticounterfeiting and information encryption applications, highlighting a promising avenue for the development of functional metal halides.
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DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 18.1
Zhao Yongqi,Wang Pu,Jiang Junjie,Zhao Ziwei,Xiu Aorui,Liu Xiaolong,Zhu Tingyu
Transition-metal oxides offer a low-cost alternative to precious metals for environmental catalysis, yet CO oxidation under humid and sulfur-laden conditions remains challenging due to rapid poisoning. Herein, we report an atomic dispersion of Ti‑decorated MnO x -Fe 2 O 3 catalyst that achieves high activity and remarkable H 2 O/SO 2 resistance. Atomically dispersed Ti provides electron-accepting 3d states from O 2p orbitals, which redistributes and stabilizes selected O 2p states while modifying their hybridization with neighboring Mn/Fe 3d orbitals. The localized electronic restructuring strengthens CO adsorption and facilitates lattice oxygen activation via a Mars-van Krevelen (MvK)-like mechanism, lowering the apparent activation energy to 64.59 kJ/mol. Simultaneously, Ti-O-Fe interfaces weaken SO 2 adsorption (from −1.96 eV to −0.19 eV) and suppress H 2 O competition, retaining >55% CO conversion under 10 vol% H 2 O and 10 ppm SO 2 , far surpassing the parent oxide (<10%). The orbital tuning strategy enables scalable poison resistant catalysts for industrial emission control, reducing reliance on precious‑metal systems.
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DOI
高影响因子
Chem & Bio Engineering
·
2026
·
IF 8.4
Li Shixuan,Liu Chao,Lu Ya,Li Hengyu,Liu Yang,Lin Jinqing,Long Qinghai,Zhang Boyi,Zhou Zuoming,Lv Bihong,Jing Guohua
To address the challenges of high
desorption temperatures and excessive
regeneration energy consumption in conventional organic amine absorbents,
a novel functionalized ionic liquid-based ternary water-lean absorbent,
[DBAPA][52AMP]-Ethanol-H 2 O, was proposed for efficient
CO 2 capture. This novel absorbent not only demonstrated
excellent absorption performance, achieving a CO 2 loading
of 1.03 mol·mol –1 , but also could be regenerated
at a low temperature of 371 K, with a regeneration efficiency of 94%.
The heat duty was estimated as 2.12 GJ·t –1 CO 2 , representing a 43.8% reduction compared to the benchmark
MEA solution. Mechanistic studies using 13 C NMR revealed
that the dominant reaction during absorption–desorption is
the conversion of carbamate to ethyl carbonate in the presence of
ethanol, with minimal hydrolysis due to the low water content. This
reaction pathway facilitated easier desorption and reduced regeneration
energy consumption. The proposed reaction mechanism involves the initial
formation of a zwitterion between the cation and CO 2 , followed
by deprotonation of the cation, transferring the proton to the tertiary
amine in the anion. Deprotonation was found to be the rate-limiting
step, and its low activation energy barrier allows for efficient desorption
at low temperature. This work offers valuable insights into the development
of ionic liquid-based water-lean absorbents for industrial carbon
capture, integrating low energy consumption, high efficiency, and
excellent recyclability.
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产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Chongqi Liu,Wei Zheng,Lingyan Xu,Yingming Wang,Lixiang Lian,Lu Liang,Zhentao Qin,Yanyan Lei,Qinzeng Hu,Wanqi Jie
Two-dimensional (2D) ⟨100⟩-oriented MHPs offer broad application prospects in X-ray detection due to extremely low detection limits and noise. Their multiquantum well structure limits interlayer carrier transport, significantly reducing X-ray sensitivity. High-quality, large-sized (AABA)PbBr3·H2O single crystals with ⟨110⟩ orientation were grown using an improved cooling crystallization method. The interconnected [PbX6]4– octahedra resulted in an inorganic layer spacing of 6.8615 Å. This small interlayer spacing enhances electron cloud overlap and improves interlayer transport. Ethyl side chains increase steric hindrance. A Pb–Br–Pb bond angle of 172.59° reduces octahedral tilting, weakening electron–phonon coupling and promoting charge transport. The (AABA)PbBr3·H2O X-ray detector exhibited excellent X-ray detection capabilities with sensitivity as high as 440 μC·Gyair–1·cm–2 at 50 keV X-ray and detection limit as low as 20.85 nGyair·s–1, setting a leading benchmark for 2D MHPs. Undistorted X-ray imaging was achieved at low dose rates (30.83 μGyair·s–1) with the (AABA)PbBr3·H2O X-ray detector, and excellent stability was exhibited to meet requirements for dynamic digital imaging. The (AABA)PbBr3·H2O X-ray detector shows a high potential for medical diagnostics.
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产品关联
DOI
高影响因子
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