Materials
·
2020
·Vol. 13
·期 21
·4870
·
IF 3.057
Xiao Li,Jun Li,Ying Zhang,Peng Zhao,Ruyan Lei,Baige Yuan,Manman Xia
Ni(OH)2derived from an MOF template was synthesized as an electrode material for supercapacitors. The electrochemical performance of the electrode was adjusted by effectively regulating the morphology of Ni(OH)2. The evolution of electrochemical performance of the electrode with morphology of Ni(OH)2was highlighted in detail, based on which honeycomb-like Ni(OH)2was successfully synthesized, and endowed the electrode with outstanding electrochemical performance. For the three-electrode testing system, honeycomb-like Ni(OH)2exhibited a very high specific capacitance (1865 F·g−1at 1 A·g−1, 1550 F·g−1at 5 mV·s−1). Moreover, it also presented an excellent rate capability and cycling stability, due to 59.46 % of the initial value (1 A·g−1) being retained at 10 A·g−1, and 172% of initial value (first circle at 50 mV·s−1) being retained after 20,000 cycles. With respect to the assembled hybrid supercapacitor, honeycomb-like Ni(OH)2also displayed superior electrochemical performance, with a high energy density (83.9 Wh·kg−1at a power density of 374.8 W·kg−1). The outstanding electrochemical performance of Ni(OH)2should be attributed to its unique honeycomb-like structure, with a very high specific surface area, which greatly accelerates the transformation and diffusion of active ions.Keywords:honeycomb-like structure;Ni-MOF;Ni(OH)2;electrode material;supercapacitor
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yu-Xue Mo,Jin-Xia Lin,Yi-Jin Wu,Zu-Wei Yin,Yan-Qiu Lu,Jun-Tao Li,Yao Zhou,Tian Sheng,Ling Huang,Shi-Gang Sun
Rechargeable lithium–sulfur batteries are potential candidates for storing electrochemical energy because of their extremely high energy density. However, their practical applications are prohibited by the sluggish charge transfer, the retarding Li ion diffusion, and the shuttle effect of lithium polysulfides. We report here a high-performance cathode material in which a S submicrosphere with a mass fraction of 80% was encapsulated within a permeable Co(OH)2 nanoshell which functions as a physical barrier preventing the sulfur and polysulfides from leaking into the electrolyte and also contributes to the catalytic decomposition of polysulfides during the charge and discharge process. When an interlayer of carbon nanofibers is introduced between the S@Co(OH)2 cathode and the separator, the performance of the Li–S batteries can be further significantly enhanced. Specifically, the S@Co(OH)2 cathode possesses good cycling stability over 1000 cycles with an initial discharge capacity of 1100 mAh g–1 at 2 C and a reversible capacity of 606 mAh g–1. In particular, without the LiNO3 additive, this S@Co(OH)2 cathode also exhibits a Coulombic efficiency as high as 85%, just a little lower than that of commercial electrolyte with LiNO3 additive. Relevant mechanistic studies revealed that such superior performances are attributed to the enhanced internal electrical and ionic conductivity and suppressed shuttling effect, owing to the presence of the Co(OH)2 shell and the carbon-nanofiber interlayer. Theoretical simulations based on density functional theory were also carried out to figure out the interaction between the Co(OH)2 nanosheets and the polysulfides. It revealed that the Co(OH)2 nanoshell, rather than merely working as a physical barrier to trap the polysulfides, could also adsorb polysulfides and catalyze their decomposition during the cycling process, further helping to suppress the shuttling effect.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Ligang Ma,Yihuan Ding,Chao Lin,Tingting Chen,Xinlan Li,Shun Yan,Xiang Song,Xiaoqian Ai,Xiaoshan Wu
Photocatalytic water splitting represents a sustainable pathway for hydrogen production, yet the development of efficient and cost-effective photocatalysts remains challenging. Herein, we report the in situ construction of a noble-metal-free coaxial core-shell 1D/3D heterojunction composed of paraotwayite-type α -Ni(OH) 2 nanowire (NIOH) and ZnIn 2 S 4 (ZIS) for significantly enhanced photocatalytic hydrogen evolution. The unique 1D/3D architecture of NIOH@ZIS synergistically combines the advantages of both components: the 1D NIOH nanowires suppress charge recombination by shortening in-plane migration distances, while the 3D ZIS nanoflowers provide abundant active sites and prevent structural aggregation. Under full-spectrum irradiation, the optimized NIOH@ZIS-3 heterojunction achieves an exceptional hydrogen production rate of 7.682 mmol·g⁻¹ ·h⁻¹ , 7.8 times higher than pristine ZIS. Mechanistic studies reveal that the pn heterojunction charge transfer pathway, driven by the built-in electric field at the NIOH/ZIS interface, facilitates efficient separation and utilization of photogenerated carriers. Furthermore, the heterojunction exhibits robust stability over four photocatalytic cycles without performance degradation. This work provides a rational design strategy for high-performance, low-cost photocatalysts through structural and interfacial engineering.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2019
·
IF 4.978
Atian Xie,Jiuyun Cui,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai
Realization of fast, efficient and continuous oil–water separation is of great significance for solving the problem of oil pollution. We present here a facile hydrothermal strategy to synthesize a superhydrophilic platanus fruit-like Ni@Ni(OH) 2 hierarchical architecture (SI-PFHA). Additionally, superhydrophobic platanus fruit-like Ni@Ni(OH) 2 hierarchical architecture (SO-PFHA) is obtained through stearic acid modification of SI-PFHA. Dual-channel separation system is integrated based on two superwetting membranes. Such separation system is competent for continuous light/heavy oil–water separation with high flux and high separation efficiency. Importantly, outstanding durability and reusability make this separation system a promising strategy for practical application in remediation of oily wastewater.
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Zhiguo Bian,Yingjie Li,Feifei Wang,Yi Fang,Jianli Zhao,Jianhui Qi
CaO/Ca(OH) 2 heat storage system is one of the most promising candidates for large-scale thermochemical heat storage at temperature of 300–600 °C. In this work, the CaO/Ca(OH) 2 heat storage performances of the Ce- and Mn-doped CaO were investigated and the mechanisms of promoting hydration by Ce and Mn doping were determined via density functional theory (DFT) calculations. The Mn-doped CaO exhibits the higher hydration conversion than CaO and Ce-doped CaO. The structural parameters, partial density of states, electron differential densities and energy barriers during hydration stage on the CaO, Ce- and Mn-doped CaO surfaces were compared to clarify the effects of Ce and Mn on hydration of CaO. The results show the detailed hydration reaction pathways on the CaO, Ce- and Mn-doped CaO surfaces. During the H 2 O adsorption stage, H 2 O on the Ce-doped CaO surface approaches the Ca atom first, while H 2 O on the Mn-doped CaO surface approaches the O s atom first. The adsorption energy for Ce- and Mn-doped CaO are −1.612 and −0.896 eV, respectively, which are higher than that for CaO. The doping of Ce and Mn accelerates the H 2 O adsorption on the CaO surface. The Mn doping causes the 84.3 % reduction in the energy barrier for hydration of CaO and the reduction by Mn doping is larger than that by Ce doping. Thus, Mn-doped CaO exhibits the higher hydration reactivity and hydration conversion than CaO and Ce-doped CaO. The DFT calculations determined the promotion mechanism of Ce and Mn doping on the hydration of CaO in CaO/Ca(OH) 2 heat storage.
✓ 已验证
DOI
高影响因子
Journal of Chemistry
·
2021
·Vol. 2021
·期 1
·5556295
·
IF 2.506
Zongqiang Zhu,Hongqu Yang,Jie Liu,Yinian Zhu,Shen Tang,Lihao Zhang,Xingxing Wang
Basic ferric sulfate-arsenates [FeSAsOH, Fe(SO 4 ) x (AsO 4 ) y (OH) z ·nH 2 O] were prepared and characterized to study their potential fixation of arsenic in the oxidizing and acidic environment through a dissolution for 330d. The synthetic solids were well-shaped monoclinic prismatic crystals. For the dissolution of the sample FeSAsOH–1 [Fe(SO 4 ) 0.27 (AsO 4 ) 0.73 (OH) 0.27 ·0.26H 2 O] at 25–45°C and initial pH 2, all constituents preferred to be dissolved in the order of AsO 4 3− > SO 4 2− > Fe 3+ in 1–3 h, in the order of SO 4 2− > AsO 4 3− > Fe 3+ from 1–3 h to 12–24 h, and finally in the order of SO 4 2− > Fe 3+ > AsO 4 3− . The released iron, sulfate, and arsenate existed dominantly as Fe 3+ /Fe(OH) 2+ /FeSO 4 + , HSO 4 − /SO 4 2− /FeSO 4 + , and H 3 AsO 4 0 /H 2 AsO 4 − , respectively. The higher initial pHs (6 and 10) could obviously inhibit the release of Fe 3+ from solid into solution, and the solid components were released in the order of SO 4 2− > AsO 4 3− > Fe 3+ . The crystal tops were first dissolved, and the crystal surfaces were gradually smoothed/rounded until all edges and corners disappeared. The dissociations were restricted by the Fe-O(H) breakdown in the FeO 6 octahedra and obstructed by the OH − and AsO 4 tetrahedra outliers; the lowest concentration of the dissolved arsenic was 0.045 mg/L. Based on the dissolution experiment at 25°C and pH 2, the solubility products ( K sp ) for the basic ferric sulfate-arsenate [Fe(SO 4 ) 0.27 (AsO 4 ) 0.73 (OH) 0.27 ·0.26H 2 O], which are equal to the ion activity products (logˍIAP) at equilibrium, were calculated to be -23.04 ± 0.01 with the resulting Gibbs free energies of formation (Δ G f o ) of −914.06 ± 0.03 kJ/mol.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shanshan Song,Yijun Gao,Linbo Cao,Ho Seok Park,Zhiliang Liu,Fei He,Wenwu Li,Meilin Liu,Piaoping Yang
Solid polymer electrolytes have emerged as promising materials for next-generation lithium metal batteries due to their enhanced safety and high energy density potential. However, their widespread adoption is hindered by slow ion transport and inefficient lithium-ion (Li + ) selectivity. To overcome these limitations, this study introduces a composite electrolyte by incorporating functionalized La(OH) 3 nanofibers with oxygen vacancies into a Poly(ethylene oxide) (PEO) matrix. These nanofibers, synthesized via a simple method, are designed to improve Li + mobility by leveraging their oxygen vacancies to immobilize TFSI − anions from the bis(trifluoromethanesulfonyl)imide (LiTFSI). Simultaneously, amino groups on the nanofiber surface act as binding sites, facilitating lithium salt dissociation and creating supplementary ion transport pathways. Density functional theory (DFT) and molecular dynamics (MD) simulations reveal that the functionalized La(OH) 3 nanofibers effectively suppress TFSI − anion movement while reducing the energy barrier for Li + migration. This mechanism elevates the Li + transference number to 0.51, a significant improvement over the conventional PEO-based electrolytes. The composite electrolyte exhibits excellent performance in Li||Li cells, maintaining stable cycling for over 600 h at a current density of 0.38 mA cm −2 . Furthermore, a solid-state LiFePO 4 ||Li battery demonstrates highly reversible capacities of 100.2 mAh g −1 after 600 cycles at 8C. By combining anion confinement strategies with tailored electronic interactions, this work provides a practical approach to advancing solid-state battery performance. The findings not only highlight the potential of La(OH) 3 -PEO composite electrolytes but also establish a new framework for optimizing ionic conductivity through targeted molecular design.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guojun Li,Zheng Lian,Zhengwei Wan,Zhinian Liu,Jingwen Qian,Yue Deng,Shule Zhang,Qin Zhong
Photocatalytic oxidation offers a viable method for removing low-concentration NO from the atmosphere. However, poor oxygen adsorption-activation capacity and high re-combination rate of electrons and holes limit the photocatalytic NO oxidation activity. To over-come these problems, Ni(OH) 2 clusters decorated NiTiO 3 Z-scheme heterojunctions are constructed by a precipitation method. The tight interfacial contacts and built-in electric field between the (0 0 2) crystal facet of Ni(OH) 2 and (0 1 2) crystal facet of NiTiO 3 promote a Z-scheme charge transfer mechanism. This Z-scheme mechanism will enhance the charge-transfer driving force and result in high separation efficiency of the charges, thus leading to an enhanced photocatalytic performance. Importantly, introducing Ni(OH) 2 is considered a promising strategy to enhance the adsorption ability of the O 2 , NO and NO 2 . This might help to increase O 2 activation efficiency and speed up NO deep oxidation, leading to high NO removal efficiency and low NO 2 selectivity. Benefiting from the above excellent properties, the photocatalytic NO oxidation efficiency of Ni(OH) 2 /NiTiO 3 composites is enhanced and the formation of more toxic NO 2 is inhibited compared with that of NiTiO 3 . This work offers a promising and effective route to design efficient NiTiO 3 -based photocatalysts in the application of environmental remediation.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Ze Chai,Chuanhai Jiang
The electrochemical/chemical growth of porous (Ni,Co,Cu)(OH) 2 was reported based on the corrosion behaviors of Ni-Co-Cu films in neutral salt spray . The films prepared by using electrodeposition were ternary solid solution alloys with a simple phase structure, strong texture, nanoscale grains, large microstrain and a large number of crystal defects . The unique microstructures coupled with extensive ion diffusion during the subsequent corrosion process facilitated the formation of ternary hydroxides with uniform and porous nanostructures . The ternary hydroxides composed of Ni-/Co-dominant hydrotalcite-like and Cu-dominant orthorhombic (Ni,Co,Cu)(OH) 2 could be efficiently prepared by motivating the transformation from oxide to hydroxide. The binder-free (Ni,Co,Cu)(OH) 2 electrode exhibited a high specific capacitance of 1738 F g −1 at a current density of 20 A g −1 and decent cycling stability. The electrochemical/chemical growth mode, uniform porous nanostructures and nature of the ternary hydroxides could account for the superior electrochemical performances. This work proposed a simple and green approach to prepare multicomponent hydroxides as novel electrode materials for rechargeable batteries and hybrid supercapacitors .
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jianbin Deng,Xiaohan Zhang,Qijun Zhang,Pu Wang,Deyun Li,Tian Hu,Kai Yao,Xiaoyuan Chen,Zhihao Wu,Yulong Zhang
Immobilizing reactive Mg phases within macroscopic hydrogel matrices may couple nutrient mineralization with direct retention of the resulting solid product, but such material-integrated systems remain insufficiently explored. Here, a macroscopic Mg(OH) 2 -loaded lignin hydrogel (Mg(OH) 2 @LH) was developed for nitrogen (N) and phosphorus (P) recovery from simulated digestate. The self-supporting hydrogel contained 115.60 ± 20.90 mg Mg·g −1 while retaining its porous block architecture. For powdered Mg(OH) 2 @LH passed through a 100-mesh sieve, Mg(OH) 2 @LH achieved apparent NH 4 + -N and total phosphorus uptake capacities of 73.99 and 30.99 mg·g −1 , respectively. NH 4 + -N removal varied modestly and non-monotonically with MgCl 2 impregnation concentration, whereas TP removal remained statistically unchanged across the tested preparation range. Nutrient recovery was sensitive to solution pH and N/P stoichiometry. XRD, FTIR, and SEM–EDS analyses supported the formation of a struvite-containing phase during nutrient recovery, while the non-stoichiometric N/P removal indicated contributions from processes other than struvite formation to the decrease in aqueous NH 4 + -N. Importantly, the recovered struvite-containing lignin hydrogel (MAP-LH) retained a centimeter-scale, self-supporting block form and could be directly retrieved from the liquid phase without additional fine-solid separation. Although intact blocks showed lower nutrient uptake than powdered material, this revealed a trade-off between mass transfer and macroscopic retrievability. Subsequent acidic-soil column experiments showed that MAP-LH resulted in a 53.3% lower cumulative TN leaching ratio than soluble N–P fertilizer and partially alleviated soil acidity. These results demonstrate a retrievable hydrogel architecture that integrates Mg-phase immobilization, nutrient recovery, macroscopic product retention, and post-recovery soil application. Download: Download high-res image (261KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123223
·
IF 7.5
Gaoshan Xing,Chen Yang,Xinrui Li,Silan Li,Wanxiong Xiao,Wen Wang,Liqiang Qi
Developing high-activity and low-cost desulfurizers is crucial for treating the steel industry low-temperature and highly volatile low-sulfur flue gas. This study proposes a simple and effective additive engineering strategy to convert traditional quicklime into Ca(OH) 2 desulfurizer with high activity via synergistic modification with triethanolamine (TEA), diethylene glycol (DEG), and sodium silicate (Na 2 SiO 3 ). The optimized Ca@TDS has a highly porous microstructure, characterized by a specific surface area as high as 42.19 m 2 /g, and pore volume reaching 0.186 cm 3 /g. It exhibited an elevated sulfur capacity at 37.97 mg/g, with breakthrough time extended to 93.8 min at 100°C, and excellent adaptability under high SO 2 concentrations and CO 2 -containing atmospheres. Comprehensive characterization and kinetic models indicated that the synergistic effect of additives enhanced pore connectivity, promoted internal diffusion, and suppressed surface carbonate deposition. This study also successfully employed 10 tons of industrial products Ind-Ca@TDS to control SO 2 emissions below the ultra-low standard of 35 mg/m 3 in the steel plant pilot test, which fully verified the scalability and industrial feasibility of the method. This work provided an expandable and cost-effective way for the production of high specific surface Ca(OH) 2 , providing practical reference for the development of dry low-temperature FGD technology in the steel industry.
✓ 已验证
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2022
·Vol. 49
·期 8
·3381-3393
·
IF 3.134
Yang Haoguo,Guo Yijun,Han Shitong,Xi Hailing,Lin Huaxiang,Yuan Rusheng,Ding Zhengxin,Long Jinlin,Lin Qun
Mustard gas is a kind of erosive poison with great harm and used as a chemical weapon since World War. It has suggested that the photocatalytic technology is an effective method to eliminate it. Because the small difference in molecular structure between 2-CEES and Mustard gas, and the less toxic of 2-CEES, 2-CEES is often used as a simulator to evaluate the photocatalytic activity of catalysts. In this work, symbiotic mixture of Bi 2 WO 6 and Bi 6 O 6 (OH) 3 (NO 3 ) 3 ·1.5H 2 O nanosheets doped with Mo (Mo-B-B) have been synthesized by a facile hydrothermal treatment. The samples were characterized by XRD, DRS, XPS, SEM, TEM, Raman, and PL. The photocatalytic activity of the samples was evaluated by measuring the degradation of 2-CEES under visible light irradiation. The results showed that the doped Mo reduce the Eg of bare symbiotic mixture and improve the separation efficiency of photo-generated carriers that is beneficial to photocatalytic activity. The optimum amount of doped Mo is 5% that exhibits the best activity for degradation for 2-CEES.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）