JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Xiaoshuang Zhou,Bing Chen,Wei Wang,Liang Liu,Xiankai Li,Long Chen,Yanhui Li,Yanzhi Xia,Lijie Ci
The increasing requirements for wearable and portable electronics are driving the interests of high performance fiber supercapacitor. Layered double hydroxide (LDH) is broadly used in electrode materials, owing to the adjustability of components and the unique lamellar structure. However, limited active sites and poor electrical conductivity hinder its applications. Herein, the core–shell heterostructured Ni(OH) 2 @activation Zn-Co-Ni layered double hydroxides (Ni(OH) 2 @A-ZnCoNi-LDH) electrode was fabricated by loading pseudocapacitance material on the A-ZnCoNi-LDH to improve the electrochemical performance. Significantly, benefits from the synergistic effect of the multi-metal ions and the core–shell heterostructure, the electrodes demonstrated a capacitance of 2405 mF·cm −2 at 1 mA·cm −2 . Furthermore, Ni(OH) 2 @A-ZnCoNi-LDH was used as the core electrode and carbon nanotube (CNT) film coated with Fe 2 O 3 @reduced graphene oxide (rGO) was wrapped around the core electrode to assemble coaxial fiber asymmetric supercapacitor, which illustrated an ultrahigh energy density of 177.7 µWh·cm −2 at 0.75 mW·cm −2 . In particular, after consecutive charging and discharging 7000 cycles, the capacitance retention of the device was 95 %, indicating the excellent cycling stability. Furthermore, the device with high flexibility can be woven into textiles in different shapes. The fabricated device has an excellent development prospect as an energy source in wearable electronic devices.
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DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 23
·8526-8534
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IF 6.1
Fang Xu,Jialin Zheng,Dai-Huo Liu,Ao Wang,Zhenjiang Li,Chunyan Xu,Mengqin Song,Beinuo Zhang,Zhengyu Bai,Zhongwei Chen
Manganese dioxide is considered an ideal cathode candidate material for aqueous zinc-ion batteries. However, its poor conductivity and nanostructural degeneration impede its further application. Herein, a 3 × 3 tunnel-structured τ-MnO2 cathode material was synthesized through the addition of excessive Mg2+. During its preparation, a portion of Mg2+ was embedded into the 3 × 3 tunnel of τ-MnO2 to stabilize the microstructure, while another portion of Mg2+ formed a new phase, i.e., Mg2(OH)3Cl·4H2O, adjoining τ-MnO2, resulting in a cathode material with heterointerface synergy between τ-MnO2 and Mg2(OH)3Cl·4H2O. The charge arrangement of the heterointerface between τ-MnO2 and Mg2(OH)3Cl·4H2O enabled more active sites and accelerated ion-diffusion kinetics. The introduction of Mg2(OH)3Cl·4H2O increased the proportion of Mn(IV) and suppressed the structural instability caused by Jahn–Teller distortion, thereby improving the electrochemical performance of the τ-MnO2 cathode (capacity retention of 86.7% after 1800 cycles at 1 A g−1).
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
·
IF 8.1
Yanqing Cong,Qiuang Zheng,Xiaoran Wang,Xinyue Li,Qiuyu Zheng,Shi-Wen Lv
It is of great significance for a clean energy system to develop novel non-noble catalysts toward the alkaline hydrogen evolution reaction (HER). Herein, CQDs-doped Ni(OH) 2 nanosheets generated on nickel foam were fabricated by a feasible method using Ni-MOF as precursor. Notably, the alkali etching treatment can open the spatial structure of Ni(OH) 2 and expose more active sites, thereby improving the electrocatalytic active surface area . Meanwhile, introduced CQDs can be acted as the charge carrier and accelerate the charge transfer. As a result, the Ni(OH) 2 -CQDs nanosheets showed excellent electrocatalytic performance in HER under alkaline condition, and an overpotential of 101 mV for OER over Ni(OH) 2 -CQDs/NF electrode can be realized at a current density of 10 mA/cm 2 . More significantly, embedding CQDs can effectively boost the photocatalytic activity of Ni(OH) 2 . Thus, light radiation can enhance the performance of Ni(OH) 2 -CQDs/NF electrode in HER, and the overpotential of Ni(OH) 2 -CQDs/NF electrode for HER can reduce to 90 mV under light irradiation . Furthermore, the Ni(OH) 2 -CQDs/NF electrode displayed great HER stability, and the possible mechanism of photo-assisted electrochemical HER was also proposed. All in all, current work will share some valuable insights into preparation and application of catalysts in HER.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 24
·14646-14658
·
IF 10.7
Aihua Yan,Tongyang Zhang,Fei Huang,Shijian Lu,Quande Wang,Huaqi Yuan,Ye Gao,Wenxue Zhao,Jixu Zhang,Zigao Su
Exploring visible-light-driven photocatalytic materials for water splitting is of great significance for achieving green and renewable hydrogen fuel. In this work, MoS2/Sv-ZnIn2S4/Cu(OH)2 (MS/Sv-ZIS/COH) dual-junction composites for hydrogen generation were constructed by an in situ structure-tailored technique. Based on the in situ decomposition of Cu3Mo2O9 (CMO), the instantaneous formation of the sulfur vacancy (Sv), Ohmic-type MS/Sv-ZIS heterojunction and Schottky-type Sv-ZIS/COH heterojunction not only markedly boosted the carrier separation and quickly expedited the charge transfer, but also efficiently inhibited charge recombination and significantly accelerated the hydrogen reduction dynamics. As a result, such composites exhibited an optimum hydrogen production rate of 11.5 mmol h−1 g−1, which was approximately 4.6 times higher than that of pristine ZIS. This work provides an in situ design method to construct new photocatalytic materials for accelerating the redox dynamics and enhancing the water splitting performance.
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高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Junhui Wu,Baoping Yang,Jiahao Zhou,Ming Zhong,Yong Ding,kun zhao,Ye Yuan
Triboelectric nanogenerators (TENGs) are capable of effectively scavenging ambient tiny mechanical energy and converting it into electrical energy, offering significant potential for applications in self-powered sensing and electrical energy storage systems. However, the practical utility of TENGs in high-humidity environments is severely restricted due to the detrimental effects of moisture. Herein, we have fabricated a TENG utilizing a CAU-10-(SO3H)0.08(OH)0.92/polyvinyl chloride (PVC) composite film as the negative triboelectric layer and Al foil as the positive triboelectric layer, which exhibits the ability to sustain stable output voltage and current even in highly ambient humidity conditions. At a relative humidity (RH) of 20%, the 2 wt%-CAU-10-(SO3H)0.08(OH)0.92//PVC composite film-based TENG achieved an open-circuit voltage (Voc) of 318 V, a short circuit-current (Isc) of 30 μA, a short-circuit charge transfer (Qsc) of 77 nC and a peak power of 2.69 mW. The device still maintains stable output voltage and current signals even at 90% RH. There is no obvious decline in the output voltage of the TENG after continuous working for about 36,000 operational cycles. Through a transformer and a rectifier circuit, the TENG was capable of charging a 10 mF capacitor to 2.7 V in 3.48 h, which was subsequently employed for water electrolysis to generate hydrogen. After 30 electrolysis cycles, the system produced 54 µL of H2 at a rate of 143.6 µL/h/m². This work offers a reference for the development of CAU-10-(SO3H)0.08(OH)0.92-based composites with humidity resistance, which is essential for the application of TENGs in high-humidity environments.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Yuyan Feng,Dongbo Wang,Qingge Feng,Chenghua Fan,Ying Lu,Wenqiang Yang
Activation of peroxymonosulfate (PMS) to generate reactive oxygen species (ROS) for pollutant degradation via metal-free photocatalysts is an important green wastewater treatment and remediation method, but the pathway for generating ROS via exciton effects in catalysts is often overlooked. In this study, OH/C=O co-modified N-defective rod-shaped carbon nitride (Nv-CN-O) was designed and synthesized by soft template and alkali hydrothermal method. In the Nv-CN-O/PMS/Light system, there was a synergistic degradation of tetracycline (TC) by carriers and excitons, with a degradation rate 2.15 times higher than that of CN/PMS/Light. N vacancies and OH/C=O enhanced the adsorption to PMS, accelerated the charge transfer process, and activated PMS to generate ·O 2 − dominated reactive species. The functional group OH/C=O promoted the production of triplet excitons that through the energy transfer pathway to promote the production of 1 O 2 . Abundant ROS were involved in the TC degradation process, and three possible TC degradation pathways were proposed. Nv-CN-O has strong anti-interference ability in actual water bodies, shows a promoting effect on the degradation of TC, which has practical application potential.
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高影响因子
Water
·
2024
·Vol. 16
·期 11
·1467
·
IF 3
Liying Che,Huanhuan Ji
Hydrotalcite/bismuth solid solution (2D/2D CoAl-LDH/BiO(OH)XI1−X) heterojunction photocatalysts were fabricated through a hydrothermal route. Because of their identical layered structure and interlayer hydroxides, CoAl-LDH(2D) and BiO(OH)XI1−X(2D) form a tightly bonded heterojunction, resulting in efficient light absorption, excitation, and carrier migration conversion. At the same time, the large specific surface area and abundant hydroxyl groups of the layered structure make the heterojunction catalyst exhibit excellent performance in the photocatalytic degradation of organic pollutants. Under visible light irradiation and in the presence of 1 g/L of the catalyst, 10 mg/L of methyl orange (MO) in water could be completely degraded within 20 min, and the degradation rate of tetracycline (TC) reached 99.23% within 5 min. CoAl-LDH/BiO(OH)XI1−Xstill maintained good photocatalytic degradation activity of tetracycline after five cycles, and the structure of the catalyst did not change. The reaction mechanism related to the degradation of TC by photocatalytic reactions was explored in detail, and the photoexcitation of the semiconductor heterojunction, as well as the subsequent free radical reaction process and the degradation pathway of TC were clarified. This work provides a promising strategy for the preparation of efficient photocatalytic materials and the development of water purification technology.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jixu Zhang,Liang Mao,Aihua Yan,Fei Huang,Nan Li,Zigao Su,Huaqi Yuan,Bolei Hui,Heng Wang
The sluggish charge-carrier kinetics for conventional photocatalysts severely limit the photogenerated charge utilization and result in unfavorable hydrogen evolution efficiency. To address these challenges, CoS/S v -ZnIn 2 S 4 /Ni(OH) 2 photocatalysts, containing sulfur vacancy, p-n-type heterojunction and Ohmic contact, were successfully constructed via an in-situ technique. Defect-mediated enrichment of photogenerated electrons at sulfur vacancies achieved fast charge transfer and inhibited the carrier recombination. The interfacial electric field (IEF) due to p-n-type heterojunction enhanced the carrier separation and transfer. Ohmic contact rapidly extracted the photogenerated charges and accelerated the hydrogen reduction reaction dynamics. As expected, CoS/S v -ZnIn 2 S 4 /Ni(OH) 2 catalysts reached an impressive hydrogen evolution rate of 19.45 mmol g −1 h −1 , which was 8.61 times higher than that of pure ZIS. This work demonstrates that the synergistic effect between sulfur vacancies and IEF effects may establish a new paradigm for designing high-efficiency multi-component sulfide-based photocatalysts.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Mengyao Hua,Siyi Wang,Meng Cheng,Guangming Liang,Yafen Zhou,Lei Xu,Guofang Zhang
Photocatalysts UiO-66-(OH) 2 /MnO 2 -TiO 2 with intimate contact interfaces were successfully synthesized by impregnation methods and all of the composites were characterized by a variety of analytical techniques. The results indicated that MnO 2 and TiO 2 form a heterojunction and tightly attached to the surface of UiO-66-(OH) 2 , the generation of MnO 2 -TiO 2 heterojunction improved the catalyst electron-hole separation efficiency, and there was a strong electronic interaction between MnO 2 -TiO 2 and UiO-66-(OH) 2 in the composite. The synergistic combination of high adsorption capacity of UiO-66-(OH) 2 , and efficient interfacial charge transfer between UiO-66-(OH) 2 and MnO 2 -TiO 2 have a significant impact on the enhanced photocatalytic performance for formaldehyde removal. Meanwhile, the hydroxyl radicals (·OH) and superoxide radicals (·O 2 - ) also play a major role in removal of formaldehyde. The formaldehyde removal rate of 70UO/MnO 2 -TiO 2 (1 g 0.15 m 3 ) in self-made closed system under high pressure mercury lamp irradiation is 88.19 % within 5.5 h, if the removal time is extended to 24 h, the formaldehyde removal rate can reach 95.19 %, and the continuous photocatalytic reaction showed that the composite is a highly stable catalyst.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Dan Li,Zuquan Gan,Cailin Zhang,Xiuqiu Wang,Mingzhen Zheng,Xiaoyun Gao,Yue Huang,Youjun Fan,Shuifeng Zhang,Fuqin Zheng,Wei Chen
The exploration of sustainable approaches for plastic waste disposal has emerged as an urgent imperative task. This research presents an innovative and eco-friendly electrochemical route to degrade plastic waste, ethylene glycol (EG), into value-added formate. To this end, an interesting hollow FeOOH/CoOOH heterostructure is successfully fabricated for EG oxidation. The difference in work functions between FeOOH and CoOOH results in the establishment of a built-in electric field (BEF), which is beneficial for the adsorption of EG and *OH. As a result, the FeOOH/CoOOH demonstrates outstanding catalytic performance in the EG oxidation reaction (EGOR) with an exceptionally low potential of only 1.32 V at 10 mA cm -2 and a high Faraday efficiency of 92.19% for formate generation. Glycollic acid is identified as a pivotal intermediate in the EGOR by in-situ infrared spectroscopy. Theoretical computations disclose that the FeOOH/CoOOH heterostructure not only causes an upward shift of the d-band center but also largely enhances the *OH adsorption, thus speeding up the cleavage of the inert C-C bond and markedly facilitating the conversion of EG to formate. This research not only enriches the fundamental comprehension of the EGOR but also provides deep insights for the rational design of highly selective and active EGOR catalysts.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhenfei Lv,Mengke Fan,Yukun Cao,Xin Wang,Chong Lan,Qingping Wang,Chen Yang,Xiulin Shen,Xiujuan Feng
In this study, a low-cost foam ceramic was prepared by a high-temperature reconstruction method using gangue and waste electric porcelain as the main materials. The results showed that the sintering temperature, foaming agent (waste SiC slab) content and modifier Ca(OH) 2 had significant effects on the macrostructure, microstructure, crystalline phases and properties of the foam ceramics. With a sintering temperature of 1190 °C, waste SiC slab dosage of 3 % and the addition of the modifier Ca(OH) 2 , the obtained ceramics showed an earthy-yellow appearance, a compressive strength of 1.20 MPa, an apparent porosity of 64.00 %, a bulk density of 1.08 g/cm 3 , and a vertical expansion of 165 %. The increase of sintering temperature and foaming agent content improved the size of the pores. The SiO 2 protective layer of waste SiC slab was destroyed with the addition of Ca(OH) 2 , resulting in an increase in the porosity of foam ceramics by 24.9 %. Meanwhile, the introduction of calcium ions led to the fracture of Si-O bond and the reduction of liquid phase viscosity, thereby improving the uniformity of the pores. This study provides an innovative strategy and novel ideas for the value-added utilization of solid waste and the preparation of foam ceramics.
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高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Wenhao Zhang,Meiyan Cui,Zhiying Zhao,Tianyu Zhu,Zhangzhen He
Based on the crystal structure of A2Cu5(TeO3)(SO4)3(OH)4 (A = Na, K), two new compounds ACo5(SeO3)4(OH)2F (A = Rb, Cs) have been synthesized by introducing F− ions, achieving the extension from a one-dimensional kagomé strip lattice to a distorted 2-uniform lattice (T29). Magnetic measurements indicate that RbCo5 exhibits antiferromagnetic order at low temperatures, while CsCo5 shows canted antiferromagnetic behavior. Both compounds display a field-induced magnetic transition at their respective critical fields. To the best of our knowledge, this is the first reported synthesis of compounds with a distorted 2-uniform lattice (T29).
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高影响因子
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