JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Enxiang Zhou,Lijun Zhou,Yan Jin,Siyu Cai,Maxim Sychov,Yi Wang,Xihong Lu
Nickel/cobalt-based materials have attracted significant interest as cathode materials for aqueous alkaline Zn batteries (AAZBs) due to their high theoretical capacity and natural abundance. However, their practical application is hindered by unsatisfied discharge capacity and poor cycling stability, primarily caused by insufficient active sites and sluggish reaction kinetics. Herein, an effective approach is demonstrated to achieve high-efficiency and stable cathode for AAZBs by anchoring the NiCo 2 S 4 /Co 9 S 8 heterostructures on MXene nanosheets (NCS/CS@MXene), accompanied with morphological optimization. The introduced MXene significantly increases the effective active area and electrical conductivity of the composite. Consequently, the NCS/CS@MXene//Zn battery delivers a high areal capacity of 1.01 mAh cm −2 at 2 mA cm −2 , excellent cycling stability of 2500 cycles with only 0.00416% of capacity degradation per cycle, and nearly 100% coulombic efficiency.
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ACS Sustainable Chemistry & Engineering
·
2026
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IF 7.6
Qiaozhi Han,Chengxu Li,Yunshu Wang,Ziwei Ma,Chengyu Duan,Yucong Yin,Zichen Bao,Yonghao Shen,Chenwen Yin,Zhuofeng Hu,Qiming Sun
Abstract The direct synthesis of hydrogen peroxide (H2O2) from H2 and O2 provides a sustainable route for decentralized oxidant production, but its practical use is limited by inefficient Pd utilization, undesired H2O2 decomposition, and the need for high noble-metal loadings. Here, we report a Ni(OH)2-promoted Pd@S-1 catalyst that integrates zeolite confinement with interfacial electronic modulation for efficient aqueous H2O2 synthesis. The optimized Pd4Ni1@S-1-H catalyst delivers an H2O2 productivity of 3.39 mol gPd–1 h–1 under acidic conditions, representing the highest value among reported semibatch glass reactor systems and a 10-fold improvement in Pd utilization efficiency relative to a commercial Pd/C catalyst. Advanced spectroscopic analysis and density functional theory calculations reveal that Ni(OH)2 donates electrons to Pd, lowering the average Pd valence state from 1.83 to 1.39, and serves as a hydrogen-transfer bridge that promotes hydrogen migration to the *O–O intermediate. Meanwhile, hydrophobic silicalite-1 (S-1) zeolite micropores enrich dissolved H2/O2 and suppress secondary H2O2 decomposition by facilitating product desorption. The resulting in situ H2O2 generation system enables efficient Cr(VI) reduction, highlighting its potential for sustainable water remediation.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Lei Jiang,Chunli Mao,Gaojie Cheng,Hongbo Yang,Jiawen Yin,Qinghui Jin
An integrated three-electrode non-enzymatic urea sensor is developed. • The sensor exhibits a wide linear range (1–200 mg/L) and a fast response (10.8 s). • Detection potential dynamically regulates the contributions of the two urea oxidation pathways. Rapid and accurate monitoring of urea concentration in swimming pool water is critical for protecting swimmers' health and optimizing water quality management. However, traditional techniques are either expensive or operationally complex, whereas enzyme-based sensors suffer from enzyme deactivation, limiting their applicability for online monitoring. In this paper, a nickel hydroxide/nickel oxyhydroxide (Ni(OH) 2 /NiOOH) nanonetwork electrochemical sensor for non-enzymatic urea detection is proposed, which is mass-produced on a platinum electrode using microelectromechanical systems (MEMS). The electrode was activated and optimized via cyclic voltammetry by varying the scan rate. The sensor demonstrates a high sensitivity of 1.43 μA/(mg·L −1 ·cm 2 ), a wide detection range of 1–200 mg/L, a fast response time (<12 s), good repeatability with a relative standard deviation (RSD) of 1.24%, and an excellent linearity ( R 2 = 0.9988). In addition, the proposed sensor exhibits excellent anti-interference performance toward coexisting species such as creatinine, uric acid, residual chlorine, and lactic acid. Practical applications in swimming pool water samples yielded recovery rates of 92.5–100.4%, validating the sensor's robustness. Two distinct oxidation mechanisms for urea on the electrode were observed by electrochemical impedance spectroscopy (EIS). The direct pathway was further found to be potential-tunable, with its charge-transfer resistance decreasing by 35.6% upon raising the working potential from 0.45 V to 0.50 V. This work offers a promising route toward non-enzymatic urea sensors for swimming pool water monitoring. Download: Download high-res image (140KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Bin Han,Yuanfang Lin,Yu Luo,Weizhen Liu,Xueming Liu,Zonglin Weng,Xinwen Ou,Zhang Lin
Low-crystalline ultrathin nanosheets (UNSs) hold great potential for efficient photoreduction of anthropogenic CO 2 , while developing green synthetic methodologies and elucidating the structure-performance relationship remain significant challenges. Here, via a CaO-mediated strategy , we demonstrate a facile strategy for the large-scale production of low-crystalline Ni(OH) 2 UNSs from industrial wastes. The resultant Ni(OH) 2 UNSs deliver a superior CO formation rate of 9.2 μmol h −1 with a high selectivity of 93.1 % in low-concentration CO 2 (10 %), which remarkably outperforms that of Ni(OH) 2 NSs with high crystalline. Experimental and theoretical investigations demonstrate that the boosted performance originates from the fully exposed oxygen vacancies and low-coordination Ni sites, which facilitates the separation of photogenerated charge pairs and the adsorption and activation of diluted CO 2 . This work demonstrates a sustainable strategy for the large-scale synthesis of low-crystalline layered metal hydroxides, paving new avenues for the high-value utilization of industrial wastes in mitigating climate change.
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DYES AND PIGMENTS
·
2022
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IF 5.122
Lili He,Rui Liu,Chunhua Ge,Chunxue Ma,Li Yang,Xiangdong Zhang
Recently, carbon dots (CDs) have gained much attention in optoelectronic fields on account of their superior optical and environmentally friendly properties. Nevertheless, aggregation-induced quenching (AIQ) effect of solid-state CDs and thermal quenching caused by high temperatures severely hinders their further development. Herein, a novel wCDs/BNNS-OH hybrid nanostructure was synthesized by combining blue CDs (bCDs) and yellow CDs (yCDs) to the hydroxylated boron nitride nanosheets (BNNS–OH) surface. The uniform dispersion of CDs in BNNS-OH effectively alleviates the undesirable AIQ effect, and enables CDs/BNNS-OH composites to have color-tunable fluorescence characteristics. The wCDs/BNNS-OH/PVA composite film was obtained by encapsulating wCDs/BNNS-OH into polyvinyl alcohol (PVA). The film exhibits excellent luminescence stability in the air, ultraviolet light , water, and high-temperature environment. Meanwhile, since wCDs/BNNS-OH establishes an effective heat transfer channel in the PVA matrix, the working temperature of CDs in the wCDs/BNNS-OH/PVA film is greatly reduced. Moreover, the prepared wCDs/BNNS-OH/PVA film is flexible enough to retain the photoluminescence intensity unchanged after thousands of bending cycles. This high stability and heat dissipation wCDs/BNNS-OH/PVA composite film will facilitate the application of CDs in flexible and foldable lighting devices.
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Frontiers in Chemistry
·
2023
·
IF 5.5
Zhang Jie,Ren Quan,Wang Yun,Xiao Ruixue,Chen Hongyu,Xu Wenjia,Feng Yuhua
Hybrid nanostructures have garnered considerable interest because of their fascinating properties owing to the hybridization of materials and their structural varieties. In this study, we report the synthesis of [Au@Rh(OH)3]-Au island heterostructures using a seed-mediated sequential growth method. Through the thiol ligand-mediated interfacial energy, Au@Rh(OH)3 core-shell structures with varying shell thicknesses were successfully obtained. On these Au@Rh(OH)3 core-shell seeds, by modulating the diffusion of HAuCl4 in the porous Rh(OH)3 shell, site-specific growth of Au islands on the inner Au core or on the surface of the outer Rh(OH)3 shell was successfully achieved. Consequently, two types of distinct structures, the Au island-on-[Au@Rh(OH)3] dimer and Au island-Au bridge-[Au@Rh(OH)3] dumbbell structures with thin necks were obtained. Further modulations of the growth kinetics led to the formation of Au plate-Au bridge-[Au@Rh(OH)3] heterostructures with larger structural anisotropy. The flexible structural variations were demonstrated to be an effective means of modulating the plasmonic properties; the Au–Au heterostructures exhibited tunable localized surface plasmon resonance in the visible-near-infrared spectral region and can be used as surface-enhanced Raman scattering (SERS) substrates capable of emitting strong SERS signals. This diffusion-controlled growth of Au bridges in the Rh(OH)3 shells (penetrating growth) is an interesting new approach for structural control, which enriches the tool box for colloidal nanosynthesis. This advancement in structural control is expected to create new approaches for colloidal synthesis of sophisticated nanomaterials, and eventually enable their extensive applications in various fields.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 6
·15991-16002
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IF 5.19
Zhang Xueying,Liu Yonggang,Yu Yonghao,Wang Lifen,Lin Yinjun
Here, we report a simple and efficient strategy for evenly in situ growth of Cu 2 (OH) 3 F nanosheets on BiVO 4 spheres as a novel photo-Fenton-like catalyst using hydrothermal method. The Cu 2 (OH) 3 F/BiVO 4 composite catalysts showed great performance for the organic pollutants degradation under visible light irradiation due to the efficient electron transfer and copper species transformation. The synergetic between Cu 2 (OH) 3 F and BiVO 4 not only promoted the separation of electrons and holes but also enhanced the Cu 2+ reduction, thus produced more strong oxidative radicals under a wide pH value range. The activity of Cu 2 (OH) 3 F/BiVO 4 composite for methylene blue degradation was 6.03 and 5.47 times more than that of pristine Cu 2 (OH) 3 F and BiVO 4 , respectively. The composite catalysts were characterized with various methods and their stability and adaptability were also evaluated. Finally, a possible photo-Fenton-like reaction mechanism was also proposed based on the band structure/position and reaction species.
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ChemElectroChem
·
2022
·Vol. 9
·期 15
·e202200522
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IF 4.782
Liying Ming,Xiao-Yuan Wu,Sa-Sa Wang,Weiming Wu,Can-Zhong Lu
Graphical Methanol to formate : Selective electrooxidation of methanol for the production of formate with high Faradic efficiency was easily implemented in a two-electrode configuration at high current densities, in which Co 2+ -doped Ni(OH) 2 nanosheets were facilely grown on Ni foam and were used as efficient porous electrodes. Co 2+ -doped Ni(OH) 2 nanosheets were grown on porous Ni foam by a simple electrodeposition method. The obtained samples were used as porous electrodes for selective electrocatalytic oxidation of methanol to formate in NaOH aqueous solution. The results indicated the oxidizing abilities of the as-prepared electrodes could be regulated by the doping content of Co 2+ for the electrooxidation of methanol, in which the electrode with a Co 2+ doping content of 10 mol % required a lowest potential of ∼1.32 V vs . RHE to achieve a current density of 100 mA cm −2 as compared with other electrodes. And the doping of Co 2+ helped boosting the Faradic efficiency for the electrocatalytic oxidation of methanol. Moreover, the electrooxidation of methanol for the production of formate (Faradic efficiency ≥96.5 %) with the simultaneous generation of hydrogen was easily implemented in a two-electrode configuration at high current densities (100–500 mA cm −2 ). The results of the durability test further revealed that the 10 mol % Co 2+ -doped Ni(OH) 2 electrode exhibited an outstanding stability for the electrocatalytic oxidation of methanol in the present system.
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MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 10
·1-13
·
IF 6.408
Wang Fang,Shi Fengna,Chen Cheng,Huang Kexin,Chen Naipin,Xu Ziqi
Cobalt hydroxide nanoparticles (Co(OH) 2 NPs) were uniformly deposited on flexible carbon cloth substrate (Co(OH) 2 @CC) rapidly by a facile one-step electrodeposition, which can act as an enzyme-free glucose and uric acid sensor in an alkaline electrolyte. Compositional and morphological characterization were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS), which confirmed the deposited nanospheres were Co(OH) 2 nanoparticles (NPs). The electrochemical oxidation of glucose and uric acid at Co(OH) 2 @CC electrode was investigated by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), differential pulse voltammetry (DPV), and chronoamperometry methods. The results revealed a remarkable electrocatalytic activity toward the single and simultaneous determination of glucose and uric acid at about 0.6 V and 0.3 V (vs. Ag/AgCl), respectively, which is attributed to a noticeable synergy effect between Co(OH) 2 NPs and CC with good repeatability, satisfactory reproducibility, considerable long-term stability, superior selectivity, outstanding sensitivity, and wide linear detection range from 1 uM to 2 mM and 25 nM to 1.5 uM for glucose and UA, respectively. The detection limits were 0.36 nM for UA and 0.24 μM for glucose (S/N = 3). Finally, the Co(OH) 2 @CC electrode was utilized for glucose and uric acid determination in human blood samples and satisfying results were obtained. The relative standard derivations (RSDs) for glucose and UA were in the range 6 to 14% and 0 to 3%, respectively. The recovery ranges for glucose an UA were 97 to 103% and 95 and 101%, respectively. These features make the novel Co(OH) 2 @CC sensor developed by a low-cost, efficient, and eco-friendly preparation method a potentially practical candidate for application to biosensors. Graphical abstract
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Jialu Huang,Chengwei Deng,Yue Liu,Tingting Han,Feng Ji,Yuehua Zhang,Hongbin Lu,Ping Hua,Bowei Zhang,Tao Qian,Xiaolei Yuan,Yaoyue Yang,Yong Yao
Palladium (Pd) is supposed to be one of the most promising catalytic metals towards ethanol (C 2 H 5 OH) oxidation reaction (EOR). However, Pd electrocatalysts easily suffer from the poisoning of the intermediates (especially CO), resulting in the quick decay of EOR catalysis. Herein, inspired by the Brønsted-Lowry acid-base theory, a “attraction–repulsion” concept is proposed to guide the surface structure engineering toward EOR catalysts. Specifically, we induce Bi(OH) 3 species as Brønsted base onto PdBi nanoplates to effectively repel the adsorption of CO intermediates. The PdBi-Bi(OH) 3 nanoplates show an impressive mass activity of 4.46 A mg Pd -1 during the EOR catalysis and keep excellent stability. Both the stability and enhanced performance are attributed by the interfacial Brønsted base Bi(OH) 3 which can selectively attract and repel reactants and intermediates, as evidenced from in situ measurements and theoretical views.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Jia Cheng,Xiaoyang Yue,Caixia Chen,Xiaoping Shen,Shiping Zeng,Zhenyuan Ji,Aihua Yuan,Guoxing Zhu
Developing highly efficient, low-cost and stable electrocatalysts for oxygen evolution reaction (OER) is momentous to achieve the conversion and storage of sustainable energy. Herein, the CoFe(OH) x / GO composites with accordion-like CoFe(OH) x nanosheets clusters dispersed on graphene oxide (GO) sheets are prepared via a template-assisted route. It is found that the OER performance of the CoFe(OH) x / GO composites strongly depends on the content of GO and the mole ratio of Co/Fe. The optimized CoFe(OH) x / GO composites exhibit remarkably enhanced OER electrocatalytic activity in 1 M KOH with a low overpotential of 294 mV at 10 mA cm −2 and a small Tafel slope of 63.4 mV dec −1 , which are far superior to the corresponding Co(OH) 2 / GO and bare CoFe(OH) x . The enhanced electrocatalytic activity can be ascribed to the regulated electronic structure surrounding the active metal sites by introducing Fe, the improved conductivity by GO for faster charge transfer, and the accordion-like hierarchical structure with increased accessible active sites. This work demonstrates a comprehensive strategy to improve the electrocatalytic performance of transition metal hydroxide based OER catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jingwen Zhang,Chuchu Cheng,FangShu Xing,Cheng Chen,Caijin Huang
Engineering semiconductor materials with vacancies and co-catalysts is a valid method to improve their photocatalytic performance. Herein, we prepared S vacancies-rich Mn 0.3 Cd 0.7 S nanorods modified with β-Ni(OH) 2 nanoparticles through solvothermal and co-precipitation strategies. The as-obtained 0D/1D β-Ni(OH) 2 /Mn 0.3 Cd 0.7 S nanorods exhibit excellent visible-light H 2 -production activity up to 71.09 mmol g −1 h −1 , 5.23 times higher than pure Mn 0.3 Cd 0.7 S and better than 1 wt% Pt/Mn 0.3 Cd 0.7 S and most reported Mn x Cd 1−x S-based catalysts. The apparent quantum yield reaches 46.68% at λ = 420 nm. We found that the presence of S vacancies and β-Ni(OH) 2 enhances the transfer/separation of photogenerated carriers and increases reaction sites, which is beneficial to photocatalytic H 2 -production reaction. This work proposes a new idea for the application of metal hydroxide co-catalysts and S vacancies in sulfide materials for photocatalytic H 2 production.
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