COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Yawei Shi,Guobin Song,Anqi Li,Jun Wang,Haonan Wang,Ya Sun,Guanghui Ding
A series of composite aerogels with different precursor mass ratios were prepared from graphene oxide (GO) and chitosan (CS) by conducting the crosslinking step after lyophilization, the method of which was recently found beneficial to enhance the adsorptive properties of aerogels . The composite aerogels were then employed for the adsorption of methyl orange (MO) and methylene blue (MB) from water, and the one prepared at GO:CS= 1:2 (w/w) was selected as the optimal compromising the adsorption and mechanical properties. The maximum adsorption amounts of MO and MB were calculated to be 543.4 and 110.9 mg/g at 25 °C. Especially, the effects of pH on adsorption of MO and MB in both single and binary systems were investigated in detail. The aerogel possessed pH-responsive feature for single dye adsorption, tending to adsorb MO at low pH while to adsorb MB at high pH. In the binary system, the pH-responsive feature remained and selective adsorption was observed at low initial dye concentration. In contrast, synergistic adsorption occurred instead at high initial concentration, and MB and MO could be efficiently removed simultaneously in the whole pH range of 3–11.
研究领域:
环境科学
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材料科学
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化学工程
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水处理
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吸附技术
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高影响因子
RSC Advances
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2015
·Vol. 6
·期 3
·2241-2251
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IF 3.84
Xiaohua Sun,Weilong Luo,Linlin Chen,Linjie Zheng,Chao Bao,Panpan Sun,Niu Huang,Yihua Sun,Liang Fang,Lei Wang
Porous Al doped ZnO (AZO) nanosheets have been prepared as an efficient multifunctional water treatment material. Their fundamental properties were characterized by various spectroscopic testing methods. The AZO nanosheets displayed very rapid adsorption rate and high adsorption capacity for methyl orange (MO) dye. The kinetics and equilibrium of adsorption process were found to follow the pseudo-second-order kinetic and Langmuir isotherm models, respectively. Furthermore, the AZO nanosheets exhibited superior photodecolorizative activity compared with the commercial P25 TiO2 nanoparticles. It was found that Al doping increased the zeta potential of AZO nanosheets and then significantly enhanced the adsorption capacity for MO dye and, at the same time, retarded the recombination of photoexcited electron–hole pairs, and prolonged the lifetime of the photo-generated carriers, and then improved the semiconductor photocatalytic activity. In addition, the visible-light-driven dye photosensitized degradation was also an important reason for enhanced photodecolorizative activity. Therefore, AZO nanosheets are a potential multifunctional water treatment material combining highly efficient adsorption and photocatalytic degradation.
研究领域:
材料科学
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环境化学
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纳米技术
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光催化
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水处理
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Liang Qin,Yan Li,Deyun Ma,Fenglan Liang,Lidian Chen,Chenyang Xie,Jiayong Lin,Yani Pan,Guizhen Li,Fenrou Chen,Peiru Xu,Canlin Hong,Jiaxing Zhu
Two transition metal-based MOFs , {[Ni 2 (pip) 2 (bimb) 1.5 ]·2(H 2 O)} n ( 1 ), and {[Zn(pip)(bimb)]·DMF} n ( 2 ) (pip = 5-phenyl-isophthalate, bimb = 1,4-bis(imidazole-1-ylmethyl)benzene) have been successfully prepared. Complex 1 displays a three-dimensional structure with a 7-connected svk topology with a point symbol of (3 3 ∙4 14 ∙5 3 ∙6). Complex 2 performs a two-dimensional (4,4) sql net with channels of 7.0 × 5.5 Å 2 and 10.5 × 4.7 Å 2 along the b and c axis, respectively. The magnetic result of 1 shows an antiferromagnetic coupling between the two metal centers. Desolvated 2 adsorbs around 15.25 wt% 5-fluorouracil (5-FU). The 5-FU was slowly released without any burst release. The degradation of methyl orange caused by oxidizing sulfate radicals (SO 4− ) in a Fenton-like process has also been explored.
研究领域:
无机化学
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材料科学
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药物递送
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环境催化
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配位化学
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高影响因子
Journal of Physical Chemistry C
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2024
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IF 3.3
Yanting Dou,Yu Gao,Bobo Bai,Jiqi Zheng,Shuxia Bao,Cheng Dong,Hongjiang Li,Qiuhui Bu,Dongling Ma,Fu Ding,Yaguang Sun,Zhenhe Xu
Design and conception of a competent photocatalyst for water splitting and photodegradation are critical for energy transformation and environmental remediation. Herein, for the first time, we demonstrated that mixed redox-couple-involved bornite phase Cu5FeS4 could act as an efficient and robust cocatalyst for graphitic C3N4 (g-C3N4), which enables the achievement of considerably boosted visible-light photocatalytic activities in both H2 evolution and pollutant degradation reactions. Under visible-light irradiation, the optimized g-C3N4/Cu5FeS4 heterojunction presented a remarkably increased H2 production rate of 27.92 μmol g–1 h–1 (without involving any noble metals) and methyl orange (MO) photodegradation rate of 2.18 min–1 g–1 compared with those of g-C3N4 and Cu5FeS4. To be more specific, these rates are ∼15 and 3 times higher than those of pure g-C3N4 in these two reactions, where the pure Cu5FeS4 did not show any activities. The enhanced photocatalytic performance was identified to be due to the presence of a “mixed redox-couple” of Cu(I)–S–Fe(III), which enhanced charge separation efficiency between g-C3N4 and Cu5FeS4, consequently facilitating the overall reaction kinetics. Overall, our work not only demonstrates the immense potential of using mixed redox-couple-involved bornite phase Cu5FeS4 as the cocatalyst in photocatalysis but also expedites the designing and discovering of novel photocatalytic systems based on the proposed concept of the mixed redox-couple.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Guanhua Zhang,Shengjie Xia,Huimin Li,Hao Du,Tiantian Li,Yongyong Cao,Yue Meng,Juan Wang,Chenglin Zhong,Woon-Ming Lau
The synergistic treatment of pollutants in water by radical and non-radical pathways based on photo-like Fenton-activated peroxydisulfate (PDS) has received much attention from researchers. However, clarifying the structure–activity relationship between the photocatalyst structure and the dual-pathway degradation mechanism is difficult. Herein, the flower-like nickel–iron layered double hydroxide containing oxygen vacancy (NiFe-LDH-V O ) was constructed by dual-hydrothermal method. The NiFe-LDH-V O /PDS/light system exhibited excellent degradation performance (93.1%) for norfloxacin (NOR). Notably, the apparent rate constant exceeded pristine NiFe-LDH by 2.6 times. The results of experiments, characterization and DFT calculations indicated that the enhanced degradation activity was attributed to the dual-pathway of radical and non-radical induced by V O on the catalyst surface. V O can not only improve the migration and separation efficiency of photogenerated carriers, which ensures the energy base of PDS activation, but also act as the active site of both radical pathway and non-radical pathway. In particular, V O can change the adsorption conformation of PDS, which enhances the adsorption of PDS on the catalyst and significantly reduces the energy barriers of the two activation pathways of PDS. The reasonable pathways for NOR degradation were proposed based on HPLC-MS and DFT calculations. In addition, the toxicity analysis of intermediates indicated lower developmental toxicity and mutagenicity compared to NOR. The present work provides innovative insights into the study of photocatalysts with dual degradation pathways and their mechanistic elaboration.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Jia Su,Zhen Dou,Jiale Tian,Huiyong Chen,Qingqing Hao,Long Xu,Jianbo Zhang
Na₂CO₃-NaCl eutectic molten salt is used to enhance Ni/CC catalyst for CMD. • 97.6% CH₄ conversion is obtained over 20 h under a counter-current gas flow system. • High and stable activity arises from a triple synergistic effect of the salt system. • The molten salt achieves >99% recovery via simple water washing and evaporation. • Besides H 2 , carbon products are graphitic spheres and thin graphitic sheets. Catalytic methane decomposition (CMD) is a promising route for low-CO ₓ hydrogen production, but conventional solid catalysts suffer from rapid deactivation due to carbon encapsulation and metal sintering. Herein, we develop a low-cost, robust gas-liquid-solid triphasic system by integrating a Ni/coal-char catalyst with a Na₂CO₃-NaCl eutectic molten salt (with an optimized mass ratio of 6:4 and counter-current operation). At 850 °C, this system achieves a stable methane conversion of 97.6% over 20 h, with no obvious deactivation. The exceptional performance originates from a triple synergistic effect of the eutectic salt: (i) mass transfer enhancement via counter-current operation, (ii) interface protection that suppresses Ni sintering and directs carbon growth toward value-added graphitic structures, and (iii) potential electronic modulation via Ni 2+ -CO₃ 2− coordination that facilitates CH 4 activation and conversion. Furthermore, the molten salt can be recovered almost completely (>99%, as determined by titration), with 94.1% methane conversion maintained after five cycles. This work provides a promising strategy toward industrial hydrogen production and deepens the mechanistic understanding of physical-chemical synergy in molten salt-mediated CMD systems. Download: Download high-res image (174KB) Download: Download full-size image
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Zhiming Chen,Jiabin Chen,Haoming Bao,Kaitao Liu,Pan Zeng,Fan Yang,Wei Cao,Dongqi Yang,An Cao,Tao Zhang,Yue Li
Surface-enhanced Raman scattering (SERS) has been one of the efficient strategies for trace molecular analysis, but the traditional substrates with sharp tips cannot effectively detecting the molecular isomers. Here, we develop a facile way to fabricate large-area, reproducible Ag/Au nanocavity arrays by the combination of microsphere-templated soft lithography and self-assembly. Compared to the flat and convex substrate, the Ag/Au units arranged on the concave surface exhibit a high-density of hotspots via spatial light confinement and multi-reflection-enhanced electromagnetic coupling, which enables highly sensitive detection of probe molecules down to10 −12 M. Moreover, by integrating machine learning algorithms, the test set shows a coefficient of determination (R 2 ) of 0.9896, achieving advanced training performance for classifying four structurally analogous quinolone antibiotics (ciprofloxacin, enrofloxacin, danofloxacin, and enoxacin) with a quantitative prediction of 10 −10 M. This work demonstrates a robust pathway for the controllable fabrication of high-performance SERS substrates for the development of intelligent, quantitative, and on-site sensing platforms in complex practical scenarios. Download: Download high-res image (179KB) Download: Download full-size image
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
·
IF 5.1
Ju Lv,Lang Pan,Yawei Zhu,Xinyue Zhang,Xueqiong Yin
Conventional solar evaporators often suffer from salt accumulation, biofouling, and structural instability, limiting their practical use in sustainable freshwater production. Herein, a lightweight, self-floating chitosan/polyvinyl alcohol/genipin aerogel (CPG) was developed through an eco-friendly, photosensitizer-free crosslinking and aerogelation strategy for solar-driven desalination and wastewater purification. The optimized CPG aerogel combines broadband optical absorption of 97 %, robust mechanical stability, and an interconnected macroporous network, enabling rapid water replenishment, vapor transport, and salt rejection. Under 1 sun irradiation, CPG achieved a high evaporation rate of 3.85 kg·m −2 ·h −1 and maintained stable performance in hypersaline brine containing 25 wt% NaCl. During real seawater desalination, the evaporation–condensation process effectively rejected non-volatile ions, producing purified water that met WHO drinking water standards. CPG also generated dye-free condensates from dye-containing wastewater through distillation separation and interfacial retention, rather than direct dye degradation. In addition, the aerogel exhibited stable evaporation performance across pH 2–12 and light-enhanced antibacterial activity with > 99.9 % bacterial inactivation. This integrated self-floating aerogel design provides a promising platform for durable solar desalination and wastewater purification.
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高影响因子
CHEMICAL PHYSICS LETTERS
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2026
·
IF 2.9
Kaicheng Zhou,Xiaomin Jian,Zhongli Wu,Xingjun Li,Xinchi Duan,Yingchun Luo
Directionally aligned MXene-PVA@AG aerogel with anisotropic water channels. • 97.22% solar-thermal conversion efficiency under 1 sun. • Stable evaporation for 7 days and under extreme pH conditions. • Excellent oil-resistance in oil-water emulsion systems. • 99% removal of metal ions and efficient dye purification. Solar interfacial evaporation has emerged as a potential solution for wastewater treatment. In this study, an MXene-PVA@AG composite aerogel evaporator (PAMX) with vertically oriented channels is fabricated via directional freeze drying. Results show that the PAMX evaporator exhibits an evaporation rate of 1.82 kg·m −2 ·h −1 under 1 sun illumination, corresponding to a photothermal conversion efficiency of 97.22%. Furthermore, the PAMX evaporator exhibits remarkable purification effects on metal salt ions and organic dyes, such as MO and MB, and sustain strong evaporation performance in oil-containing systems. Overall, this work presents a feasible strategy for treating complex water bodies. Scheme 1. Flow chart for the preparation of PAMX aerogel. Solar interfacial evaporation has emerged as a potential solution for wastewater treatment due to its high energy utilization efficiency. However, evaporators often face problems such as limited photothermal conversion capacity, poor stability, and insufficient water supply. In this study, an MXene-PVA@AG composite aerogel evaporator (PAMX) with vertically oriented channels is fabricated via directional freeze drying. Utilizing the broad-spectrum absorption of MXene and the continuous water supply from the PVA/AG porous network, synergistic regulation of solar absorption, localized heat management, and water transport is achieved. Results show that the PAMX evaporator exhibits an evaporation rate of 1.82 kg·m −2 ·h −1 under 1 sun illumination, corresponding to a photothermal conversion efficiency of 97.22%, while maintaining stable output under different light intensities. Owing to the excellent photothermal conversion performance of MXene, the PAMX evaporator exhibits remarkable purification effects on metal salt ions and organic dyes, such as MO and MB. Furthermore, using polyvinyl alcohol and agarose as matrix materials endows the evaporator with good structural stability, allowing it to maintain high evaporation rates even after one week of continuous evaporation, and sustain strong evaporation performance in oil-containing systems. Overall, this work presents a feasible strategy for the design of efficient, environmentally friendly, and pollution-resistant interfacial evaporators for treating complex water bodies. Download: Download high-res image (161KB) Download: Download full-size image
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高影响因子
Surfaces and Interfaces
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2026
·
IF 6
Xiongcheng Duan,Shuzhao Zhang,Jia Liu,Zhuorui Wu,Wan Meng,Lin Zhang,Hengye Li,Zhongxia Wang,Meijie Wei,Wei Wang
Macrocycle-based porous organic polymers (M-POPs) are promising adsorbents for uptake of iodine vapor and adsorption of organic micropollutants (OMPs) from water. Herein, two conjugated triaryl triazine-incorporated, calix[4]pyrrole-based porous organic polymers were prepared by diazocoupling reaction between 4,4′,4′'-(1,3,5-triazine-2,4,6-triyl)trianiline (TTTA) and two configurational isomers of resorcinol-modified calix[4]pyrroles (2α,2β-C4P and 4α-C4P), referred as CP-POP-1 and CP-POP-2, respectively. The obtained CP-POPs were gifted with good porosity, high nitrogen contents and conjugated triaryl triazines, while CP-POP-1 and CP-POP-2 exhibited high iodine vapor uptake at 4.27 g/g and 4.25 g/g, respectively. Charge transfer interaction was the main mechanism for iodine vapor uptake on the CP-POPs. Besides, the CP-POPs displayed preferred adsorption feature to cationic dyes, such as methylene blue (MB), crystal violet (CV) and rhodamine B (RB), while CP-POP-2 showed superior adsorption performance towards cationic dyes. The q m values of MB, CV and RB by CP-POP-2 were as high as 317.46, 373.13 and 471.69 mg/g, respectively. Thermodynamic studies discovered that the adsorption of cationic dyes upon CP-POP-2 was a spontaneous process, while mechanism researches confirmed that electrostatic, hydrophobic and host-guest interactions were involved for adsorption of cationic dyes upon CP-POP-2. In addition, CP-POP-2 could adsorb cationic dyes efficiently from water samples containing complex matrix and exhibited good reusability. The obtained results suggested the bright prospect of the CP-POPs in removal of environmental pollutants. Download: Download high-res image (222KB) Download: Download full-size image
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Jie Ding,Jing Zhang,Boxia Liu,Yuyu Wang,Dongxu Han,Yeqiong Huang,Chuhan Xing,Zhi Song
MnFe-O activates PMS to remove 99.34% phenol within 30 min. • Oxygen vacancies regulate Mn-Fe dual-site electronic coupling. • MnFe-O shows higher Fe 2+ and Mn 3+ contents for rapid redox cycling. • O 2 •− / 1 O 2 -coupled pathways dominate phenol oxidation in MnFe-O/PMS. • MnFe-O/PMS maintains high activity in diverse real water matrices. Peroxymonosulfate (PMS) activation technology has significant application potential in the removal of phenolic pollutants, but its catalytic performance is still limited by problems such as insufficient regulation of the electronic structure of active sites and unclear interfacial reaction pathways. This study used MnFe Prussian blue analogue (MnFe-PBA) as a precursor to construct a series of MnFe-X (X = O, S, Se) catalysts through thermal conversion and oxygen vacancy-related defect engineering, and systematically compared the effects of different vacancy types on the PMS-activated degradation performance of phenol. The results showed that the MnFe-O sample, which was jointly regulated by oxygen vacancy-related defects and structural reconstruction, exhibited the best catalytic activity, achieving 99.34% phenol removal within 30 min, with an apparent rate constant as high as 0.20 min −1 , which was significantly better than the MnFe-PBA and S/Se vacancy-regulated samples. XPS analysis showed that the increased proportions of Fe 2+ (77.25%) and Mn 3+ (70.00%) in MnFe-O created a more favorable local electronic environment for electron coupling and redox cycles. EPR and quenching results indicate that •OH, SO 4 •− , O 2 •− and 1 O 2 are generated simultaneously in the system, and an oxidation pathway dominated by O 2 •− / 1 O 2 coupling is ultimately formed. This work reveals the key role of oxygen vacancy-related defects and structural reconstruction in jointly regulating the activation of PMS by Mn-Fe dual sites, providing a new mechanistic basis for defect engineering-driven bimetallic catalyst design and efficient purification of phenolic wastewater. Download: Download high-res image (230KB) Download: Download full-size image
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高影响因子
JOURNAL OF CONTROLLED RELEASE
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2026
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IF 12.4
Yingzi Li,Yanxia Yang,Wenxin Zhao,Zhen Ren,Ningbo Zhang,Xiaoxu Cao,Qian Dong,Mingcan Bao,Zouyixing Lv,Ziyang Li,Changwei Lin,Ding Ding,Zhuo Chen
Current gastroesophageal reflux disease (GERD) therapies either systemically suppress gastric acid, risking physiological disruption, or rely on antacid rafts that offer transient, non-responsive neutralization. We address this with a chemistry-centered strategy that spatially localizes proton conversion around the self-positioning raft at the gastric interface. The dynamic H + conversion equilibrium system (DH + -CES) integrates a CO 2 -generating calcium alginate raft which physically impedes reflux via its bubble-stabilized architecture for rapid interfacial self-positioning, with an engineered Lactococcus lactis expressing acid urease. Under acidic challenge, urease catalysis consumes protons locally. As pH normalizes, feedback-regulated enzymatic attenuation constrains the reaction zone, preventing bulk alkalization. DH + -CES elevates interfacial pH from 2.0 to ∼5.0 within 5 min, sustains this zone for hours while modulating only 5.38% of total fluid volume, and reduces reflux-like surge height by 38%. In an acute rat GERD model, it inhibits esophageal injury by 93.95%, downregulates key inflammatory mediators, and shows favorable biocompatibility. These findings establish DH + -CES as a proof-of-concept interface-resident chemical gatekeeper for localized, self-limiting, and physiologically respectful pH control.
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PubMed
高影响因子
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