Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jiming Wang,Min Ji,Jiaqi Lv,Min Wang
Photo-thermo-chemical dry reforming of methane (PTC-DRM) produces syngas has been a promising strategy to utilize abundant solar energy and alleviate greenhouse effect. Herein, we report an efficient PTC-DRM process on Ni-based catalyst with Zn doping and investigate the effect of Zn on the catalytic performance of catalysts. Zn promoted the generation of active sites on the surface of Ni-Al 2 O 3 , suppressed the accumulation of coke during the reaction process and enhanced the photocatalytic activity of the catalyst. Ni-ZnO-Al 2 O 3 catalyst exhibited highest thermal catalytic performance and the conversion of CH 4 and CO 2 are 50.2% and 58.1% at 650 ℃, respectively. All catalysts exhibited higher reaction rates of CH 4 and CO 2 and higher hydrogen selectivity under light conditions. Light also significantly enhanced the carbon deposition resistance and stability of the catalyst. And possible reaction mechanism of the Ni-ZnO-Al 2 O 3 was proposed during PTC-DRM process.
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Chemical Physics Impact
·
2024
·
IF 3.8
Mingzhang Liang,Anze Shui,Mei Cai,Hulei Yu
Semiconductor photocatalysis is an efficient technique to degrade the pollutants from wastewater. Herein, the doping of elements and the construction of heterojunctions are used to expand the visible light region and improve the transfer of photogenerated electrons-holes. The La-ZnO/BiOCl (LZB) heterojunction has been synthesized via the hydrothermal method. Furthermore, LZB-0.30 heterojunction is found to possess the optimal photodegradation efficiency of 100 % for RhB solution under the visible light within 45 min. Its degradation rate is ten times faster than that of La-ZnO, owing to positive development of photostimulated charge carriers. In addition, the results demonstrate that LZB-0.30, as an ideal photocatalyst, has great potential applications in the treatment of contaminants, providing a feasible strategy for environmental protection.
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Frontiers of Chemical Science and Engineering
·
2025
·Vol. 19
·期 12
·1-11
·
IF 4.5
Pan Chunhong,Wang Biao,Mao Jinman,Li Mengjia,Wang Huimin,Chen Wenyi,Gao Feng,Hu Guoping,Fan Xiaolei,Huang Feng
Reverse water-gas shift reaction represents a strategic pathway for CO 2 utilization. Despite its potential, reverse water-gas shift reaction via conventional thermal-catalysis faces several challenges, including low equilibrium conversion rates due to thermodynamic constraints, high energy consumption, and insufficient product selectivity. Here, this study demonstrates an evident synergetic effect between plasma and Ag/ZnO, on enhancing reverse water-gas shift reaction. The plasma catalytic system achieved significantly improved performance with a remarkable CO 2 conversion rate of 76.5%, a high CO selectivity of 96.8% and a CO yield of 74.1%, along with an energy efficiency as high as 0.19 mmol·kJ −1 , surpassing the plasma alone system and ZnO catalytic systems. Results from X-ray photoelectron spectroscopy and Auger electron spectroscopy confirm the presence of electronic metal-support interactions between Ag and ZnO, which facilitates the formation of electron-deficient Ag sites and partially reduced ZnO x species. These reactive sites, along with oxygen vacancies created during reduction treatment, enhance the adsorption and activation of H 2 and CO 2 , offering a dominant plasma-assisted surface reaction pathway for the improved reverse water-gas shift reaction. These findings underscore the crucial role of electronic metal-support interactions in manipulating surface environments to facilitate efficient plasma-assisted catalytic reactions, with significant implications for the rational design of catalysts capable of converting CO 2 efficiently under mild conditions.
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Materials Today Communications
·
2025
·
IF 4.5
Zhou Jie,Siyuan Jin,Ruizhi Wu,Xiaochun Ma,Haoran Wang,Mengyao Pang,Zhe Yu,Wang Guixiang,Jinghuai Zhang,Boris Krit,Sergey Betsofen,Neshchimenko Vitalii,Buzikov Ruslan,Min Qiu,Yurong Yang,Jiaming Chen
Due to the poor corrosion resistance of Mg-Li alloys and the limited effectiveness of single surface treatment methods, developing a composite coating is essential to significantly enhance the corrosion protection. In this study, a stable ceramic coating was fabricated on the surface of a Mg-Li alloy by micro-arc oxidation with regulation of the concentration of ZnO nanoparticles added to the electrolyte. Layered double hydroxides (LDH) was subsequently prepared on the coating surface by modulating the hydrothermal temperature, contributing to blocking the micropores and cracks to enhance the compactness of the coating. Additionally, a low-surface-energy hexadecyltrimethoxysilane (HDTMS) was selected to self-assemble on a rough micro/nano structured MAO/LDH coating to obtain a superhydrophobic surface The composite coating exhibited exceptional corrosion resistance, with the R ct value increasing by four orders of magnitude compared to the substrate and the Y 0 (CPE out ) reduced to the 10 -9 range. Furthermore, the coating keeps almost non-corrosion morphology after 7 days of immersion in 3.5% NaCl solution, which is attributed to the combined effects of the superhydrophobicity of HDTMS, the physical barrier effect and chloride ion trapping ability of LDHs, and the reduction in porosity achieved through the incorporation of nano-ZnO in MAO coating.
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IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Yong Tao,Shuang Cao,Jianbo Wu,Jiamei Wang,Yifan Yin,Qian Hu,Changan Yang,Binbin Zhou,Liang Chen
A novel ternary nanocomposite of zinc oxide, graphene oxide, and polythiophene (ZnO/GO/PTH) was synthesized via a sonochemical method for ultrasensitive electrochemical detection of ciprofloxacin (CIP) in environmental waters. Comprehensive characterization using XRD, FT-IR, BET (surface area: 28.20 m²/g), FE-SEM/HR-TEM (average particle size: 3.42 nm), and EDS confirmed successful component integration with enhanced interfacial synergy. The ZnO/GO/PTH-modified electrode demonstrated 6.4-fold higher electrocatalytic activity toward CIP oxidation compared to bare GCE, attributed to synergistic π-π stacking interactions, Zn–S coordination, and charge-transfer enhancement. The optimized sensor exhibited outstanding analytical performance: (1) a broad linear range (0.015–6 μM, R² = 0.998), (2) high sensitivity (0.075 μA·μM⁻¹·cm⁻²), and (3) ultralow detection limit (LOD: 0.008 μmol/L, S/N = 3). Remarkably, the sensor retained 95.6% of its initial response after 25 days of storage and showed minimal signal variation (<3.0%) against 20–50-fold excess interferents (Ca²⁺, ofloxacin, etc.). Validated in real water samples (river, lake, tap water), the sensor achieved recoveries of 90.3–102.5% (RSD ≤ 5.7%, n = 5), demonstrating reliability for monitoring environmentally relevant CIP concentrations. This work provides a cost-effective and robust platform for on-site antibiotic surveillance in aquatic ecosystems.
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CHEMICAL PHYSICS
·
2025
·
IF 2.4
Yan Liu,Xuebin Zhou,Zhihua Ying,Yuan Jiang
Nitrogen dioxide (NO 2 ) detection is critical for environmental and industrial safety, yet existing sensors often suffer from limited sensitivity and slow response. To address this, we report a facile one-step hydrothermal synthesis of ZnO/SnO 2 heterostructures via a one-step hydrothermal method using cellulose nanofiber (CNF) as a templating agent. Under UV activation, the optimized composite demonstrates a high response value of 45 toward 3 ppm NO 2 , along with rapid response and recovery times of 15 s and 20 s, respectively. The CNF-assisted synthesis significantly enhanced NO 2 sensitivity and selectivity compared to conventional methods, attributed to synergistic effects of increased surface area and interfacial charge transfer. This scalable approach enables high-performance NO 2 sensors for real-time monitoring.
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JOURNAL OF MEMBRANE SCIENCE
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2025
·
IF 9
Wenwen Sun,Jiyuan Zhang,De Sun,Guoliang Zhang,Dingfei Gong
Membranes used for the advanced treatment of oily wastewater are susceptible to limitations, including the adhesion of oil-fouling and the residues (ions, emulsifiers, and residual oil droplets) in separated permeate. Here, multifunctional black zinc oxide (Black@ZnO) and graphene (Gr) modified carbon fiber (Black@ZnO/Gr-CF) membrane were prepared by electrodeposition and anodic oxidation, which realized the self-cleaning of oil-fouling and photothermal evaporation of separated permeate. The hierarchical micro-nano rough structure formed by stacked Gr and nanoflower-like Black@ZnO endowed Black@ZnO/Gr-CF with underwater superoleophobicity (153.0 °), thereby realizing efficient separation performance in oil-water mixture and (99.8 % and 146882.3 L·m -2 ·h -1 ) and emulsion (99.5 % and 27853.7 L·m -2 ·h -1 ). Additionally, the reduced band gap (2.45 eV) of Black@ZnO/Gr enabled Black@ZnO/Gr-CF photocatalytic self-cleaning performance for oil-fouling, resulting in a separation efficiency recovery rate (SERR) of 95.6 % and a flux recovery rate (FRR) of 99.0 %. Moreover, the evaporation rate of Black@ZnO/Gr-CF to the separated permeate reached 2.31 kg·m -2 ·h -1 , and the rejections of TOC and ions were all over 99.0 %. In addition, the Black@ZnO/Gr-CF can separate degreasing wastewaters (DGWs) from AW-Volkswagen, achieving separation efficiency of 97.5 and 75.6 %, with corresponding flux of 6805.2 and 5255.3 L·m -2 ·h -1 , and the SERR and FRR reached 93.9 and 92.8 %. The evaporation rate of the separated permeate reached 2.19 kg·m -2 ·h -1 , and the rejections of TOC and ions were over 98.0 %. Following the water impact, wear resistance, and UV aging test, the underwater oil contact angle of the Black@ZnO/Gr-CF stayed above 150.0 °. Self-cleaning membranes with special wettability provide new insights into the treatment of actual DGWs.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Jinyan Tang,Jingtian Tong,Hao He,Tianjian Xu,Jinzheng Yang,Dan Huang,Zhaoyong Chen,Junfei Duan
Aqueous zinc-nickel batteries suffer from severe anode challenges including dendrite growth, self-corrosion, and hydrogen precipitation, which drastically limit their cycle life and performance. Herein, a novel chemical foaming strategy was proposed to scalably fabricate ZnO@Bi 2 O 3 heterostructures. ZnO nanocrystals (∼30–80 nm) intimately integrate with Bi 2 O 3 via chemically bonded heterointerfaces were prepared combined with thermal decomposition of zinc nitrate hexahydrate and the physical confinement of polyvinylpyrrolidone. Depth-profiling XPS analysis confirms that Bi 2 O 3 not only forms a permeable barrier against alkaline electrolyte penetration but also induces interfacial charge redistribution via Bi–O–Zn covalent bonding, which regulates Zn(OH) 4 2− migration pathways and suppresses dendrite formation and electrode corrosion. The optimized ZnO@Bi 2 O 3 -M electrode delivers a coulombic efficiency of over 80 % after 600 cycles at 25 mA cm −2 , accompanied by a specific capacity of 481.8 mAh g −1 , and maintains 167.7 mAh g −1 even at 60 mA cm −2 . This study proposes a novel design strategy for high-performance aqueous zinc-nickel battery anode materials via interfacial engineering, coupled with a scalable synthesis route paving the way for industrial implementation.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xue Wu,Yulin Liu,Meng Li,Bowen Li,Xiaohui Mao,Qiankun Wang,Xiaoning Tang,Heng Zhang,Lincai Peng,Xin Gao
The escalating demand for clean water and proliferation of microbial contamination in water have challenged ecosystems and human health safety. ZnO NPs are widely used as environmental restoration agents, but their efficacy in water decontamination is hindered by low biological toxicity. In order to enhance its sterilization efficiency, we propose a top-down strategy utilizing the unique maze structure of corn stalk pith (CSP) as a germ trapper for ZnO. The in-situ delignified CSP offers abundant active sites for the adsorption of Zn 2+ , exhibiting the typical behaviors of monolayer, physisorption, endothermicity, spontaneity, and randomness. This adsorption behavior exerts an influence on microscopic morphology of the composite column, consequently resulting in alterations to antibacterial properties. The results show that the hybrid column fabricated under the Zn 2+ initial dosage of 1.00 mol/L at 30 h for 40 °C, possesses such optimal features as stacked grain-shaped ZnO NPs of 669.3 mg/g loading amount with adhesion coefficients of 0.73 ∼ 0.86 for bacterial microparticles. Consequently, the assembled bio-filter can eliminate E. coli and S. aureus as high as 99.7 % and 96.5 % respectively, attributed to CSPP labyrinth structure to enhance pathogen capture from water and facilitate ZnO-mediated inactivation. The collective findings emphasize the viability of agro-waste stalks as bio-filters for water purification.
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MOLECULES
·
2024
·Vol. 29
·期 4
·854
·
IF 4.2
Pengfei Chen,Jin Li,Jianing Wang,Lihan Deng
Organic dyes in natural waters jeopardize human health. Whether semiconductor materials can effectively degrade dyes has become a challenge for scientific research. Based on this, this study rationally prepared different nanocomposites to remove organic dyes effectively. Pure SnO2quantum dots, ZnO nanosheets, and SnO2/ZnO (ZS) binary nanocomposites are prepared using the hydrothermal method. Subsequently, SnO2/ZnO@GO (ZSG) ternary composites containing different amounts of GO, i.e., ZSG-5, ZSG-15, and ZSG-25, are synthesized by an ultrasonic water bath method, in which ZS was coupled with GO to form Z-type heterojunctions. The ZSG-15 ternary composites exhibited excellent photocatalytic activity for the degradation of rhodamine B by simulating sunlight. The test results show that the degradation rate of ZSG-15 is about 7.6 times higher than ZnO. The increase in photocatalytic activity is attributed to the synergistic effect of SnO2and GO to improve the separation efficiency of photogenerated carriers in ZnO. Notably, the large specific surface area of GO increases the reactive sites. Compared with binary nanocomposites, ZSG-15 broadens the response range to light while further accelerating the electron transport rate and improving the photoelectric stability.
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JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 10
·1-10
·
IF 2.8
Du Chenglong,Huang Zhibo,Wu Xiaohui,Jing Shuailin,Wang Feifei,Liu Xiao,Shi Yan,Zhang Liqun
The increasing demand for brominated butyl rubber (BIIR) has intensified the use of conventional ZnO/sulfur-based curing systems, raising significant environmental concerns. Herein, we present a sustainable, ZnO- and sulfur-free cross-linking strategy enabled by a primary amine, octadecylamine (ODA), which serves as an efficient cross-linker for BIIR. Upon thermal activation at 160 °C, ODA reacts with the benzylic bromide groups of BIIR via dual nucleophilic substitution, forming stable covalent networks. The cross-link density and resultant mechanical properties exhibit a positive correlation with ODA loading, reaching an optimum at 3 phr. In contrast, octadecyltrimethylammonium bromide (OTAB) and diethylamine hydrochloride—lacking N–H protons—show negligible reactivity, highlighting the essential role of the primary amine functionality in the cross-linking mechanism. This work establishes a quantitative structure–efficiency relationship for amine-based cross-linkers, providing both experimental validation and mechanistic insight for the rational design of environmentally benign vulcanization processes in halogenated elastomers.
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Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-16
·
IF 31.6
Wang Wenxiao,Wang Yaqi,Yin Feifei,Niu Hongsen,Shin Young-Kee,Li Yang,Kim Eun-Seong,Kim Nam-Young
An optoelectronic memristor with bioinspired neuromorphic behavior was proposed based on Ag/TiO 2 Nanowires: ZnO QDs/FTO.
The proposed device establishes superior long/short-term synaptic plasticity in response to electrical and light stimuli, and a neuromorphic computing task is effectively implemented based on its optoelectronic performance.
The device emulated complex biological associative learning behaviors, including the four features of acquisition, extinction, restoration, and generalization.
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