Article
Chemistry, Multidisciplinary
Yanfang Hu, Yonglong Li, Linfeng Yu, Yuying Zhang, Yuming Lai, Wei Zhang, Wei Xie
Summary: A universal assembly methodology for preparing hetero-superstructures is introduced in this study, enabling the assembly of building block materials without the need for molecular linkers and utilizing surface property modulation to achieve self-organization. The resulting superstructures exhibit superior photocatalytic activity and Raman scattering performance.
Article
Biochemistry & Molecular Biology
Belen Rubio-Ruiz, Ana M. Perez-Lopez, Victor Sebastian, Asier Unciti-Broceta
Summary: The recent incorporation of Au chemistry in bioorthogonal tools has provided new opportunities for delivering biologically independent reactions in living environments. The O-propargylation of the hydroxamate group of panobinostat shows a significant reduction in its anticancer properties, which can be converted back in the presence of Au catalysts.
BIOORGANIC & MEDICINAL CHEMISTRY
(2021)
Article
Environmental Sciences
Jingwen Zhang, Shengjuan Shao, Xin Ding, Zhixing Li, Jiaxin Jing, Weizhou Jiao, Youzhi Liu
Summary: In this study, the high-gravity technique was employed to enhance the heterogeneous catalytic ozonation process using activated carbon as the catalyst for the removal of phenol from wastewater. The results showed that the high-gravity factors, inlet O3 concentration, liquid-gas ratio, and initial pH all had significant effects on the degradation and mineralization of phenol. The RPB/O3/AC system demonstrated higher mineralization rate compared to the bubbling reactor and RPB/O3 systems, indicating the synergistic effect of AC-catalyzed ozonation and high-gravity technique on the degradation of organic pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Organic
Dan-Bi Sung, Jong Seok Lee
Summary: This study describes a gold(I)-catalyzed intermolecular formal [2 + 2 + 2] cycloaddition reaction, which selectively synthesizes highly substituted 2H-pyrans using different metal triflate additives. This method provides a new opportunity for the synthesis of other heterocyclic compounds.
Article
Chemistry, Physical
Joseph Farah, Edmond Gravel, Eric Doris, Florent Malloggi
Summary: A carbon nanotube-based packed-bed microreactor was developed for on-chip oxidation of silanes. The process is catalyzed by a heterogeneous gold-carbon nanotube hybrid embedded in the device with a micrometric restriction zone. Integration of the nanohybrid enables efficient flow aerobic oxidation of substrates into corresponding silanols with high selectivity and sustainable conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Siti Rabizah Makhsin, Muhamad Hasbullah Zakaria, Muhammad Haziq Noor Akashah, Rozina Abdul Rani, Patricia J. Scully, Peter Gardner
Summary: The main objective of this work was to create a novel sensing material using different sizes of gold nanoparticles embedded in agarose hydrogel encapsulated fibre optic sensors. The study found that smaller sized gold nanoparticles and a two-layer coating significantly boosted the signal of the fibre optic sensor, demonstrating the potential for further exploration in specific sensing applications.
Article
Chemistry, Multidisciplinary
Yuhua Zhu, Leyi Yang, Jiami Ma, Yarong Fang, Ji Yang, Xiaoping Chen, Juan Zheng, Shuhong Zhang, Wei Chen, Chuanqi Pan, Baojian Zhang, Xiaofeng Qiu, Zhu Luo, Jinlong Wang, Yanbing Guo
Summary: In this study, the role of water activation and the mechanism of promoted O-3 decomposition over MoO3/GDY catalyst were elaborated. It was found that MoO3/GDY achieved 100% O-3 decomposition under high humid conditions (75% RH) at room temperature, which was 4.0 times higher than that under dry conditions, surpassing other carbon-based MoO3 materials (<= 7.1%). The sp-hybridized carbon in GDY donated electrons to MoO3, facilitating water activation and leading to the generation of new active sites that promoted O-3 adsorption and the formation of intermediate species.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Olivier Gazil, Nick Virgilio, Fabienne Gauffre
Summary: In this study, a novel method for synthesizing metal nanoparticle-shells and continuous shells at the liquid/liquid interface using the Ouzo emulsion system is reported. Control over the size of the nanoparticle-shells was achieved by the addition of a water-soluble polymer during synthesis.
Article
Chemistry, Physical
Yingying Wang, Yifang Ding, Jiawen Gao, Xin Zhang, Hongtao Sun, Gongkai Wang
Summary: In this study, a microwave irradiation technology was developed for the in-situ growth of nano-sized Bi uniformly anchored on the surface of carbon nanotubes (CNTs). The as-synthesized freestanding electrode film effectively retards the pulverization of Bi nanoparticles, enabling fast sodium storage kinetics for high-power performance and high-capacity retention.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Xueyang Zhang, Wei Xiang, Xudong Miao, Feiyue Li, Guangdou Qi, Chengcheng Cao, Xuewen Ma, Shigeng Chen, Andrew R. Zimmerman, Bin Gao
Summary: This study produced a series of microwave biochars derived from wheat straw using a granulated activated carbon (GAC) catalyst, and tested their adsorption capacity for benzene series volatile organic compounds (VOCs). The results showed that microwave biochars with larger specific surface area, total pore volume, and micropore volume had higher adsorption capacities, and the adsorption process was influenced by both physical partitioning and chemisorption mechanisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Spectroscopy
Bilal Ahmed, Abdallah M. Elgorban, Ali H. Bahkali, Jintae Lee, Asad Syed
Summary: The study developed a probe for selective and sensitive detection of L-cysteine using gold nanoparticles, showing high accuracy in quantifying Cys from various biological samples even in the presence of other amino acids. The proposed Au NPs sensor exhibited excellent reproducibility and selectivity for Cys detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Engineering, Environmental
Xinshui Lei, Jiangen Wang, Teng Wang, Xinjie Wang, Xiaowen Xie, Haibao Huang, Didi Li, Zhimin Ao
Summary: This study investigates the catalytic mechanism of CoOx under plasma radiation and explores the relative importance of the catalyst's intrinsic structure and the specific energy input of the plasma for toluene decomposition performance. It is found that oxygen vacancy plays a crucial role in the mineralization rate, while CO2 selectivity is more dependent on the Co3+ content. A possible reaction mechanism of toluene decomposition is proposed based on in-situ DRIFTS and PTR-TOF-MS analysis. This work provides new insights for the rational design of CoOx catalysts in plasma catalytic systems.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lei Wei, Yanhong Lu, Ruixuan Lu, Yuxin Cui
Summary: Hydrolytic dehydrogenation of ammonia borane is a promising method for on-site hydrogen production at ambient conditions. In this study, waste-biomass-derived activated carbon was used as a support for non-precious bimetal phosphides nanocatalysts. The Co0.8Cu0.2P/AC catalyst showed outstanding performance with a high turnover frequency and could be magnetically separated and reused.
Article
Physics, Applied
Yuhang Zheng, Qiang Zhuang, Ying Ruan, Bingbo Wei
Summary: Bimetallic noble-metal nanoparticles were synthesized without a container using acoustic levitation, resulting in smaller size, narrower distribution, and improved catalytic performance. The use of oleylamine as stabilizer and borane-t-butylamine complex as reducing agent facilitated the preparation of Au-Ag nanoparticles. The catalytic activity of equiatomic Au-Ag nanoparticles was significantly enhanced due to synergistic effects in acoustic levitation.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Nikhil Puthiya Purayil, Chandrasekharan Keloth
Summary: In this study, the linear and nonlinear optical behavior of cobalt phthalocyanine (CoPc) in the combined local fields of plasmonic and photonic cavity modes were investigated. A planar microcavity was created using polymeric layers and embedded with CoPc/Au nanocomposites. The strong field strengths caused by the cavity photon-plasmon coupling significantly enhanced the nonlinear optical absorption of CoPc. The proposed system can act as an angle-tunable nonlinear optical switch with potential applications in photonics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Environmental
Yajie Yang, Dan Shen, Pengyi Zhang
Summary: The effects of heat treatment in different atmospheres on a tungsten-doped MnO(2) catalyst were investigated. It was found that heating in air at 400 degrees C or in helium at 300 degrees C significantly improved the activity for ozone decomposition in humid conditions, while heating in a hydrogen atmosphere did not change its humid-resistant activity.
OZONE-SCIENCE & ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Huiyu Zhang, Shaopeng Rong, Pengyi Zhang
Summary: The study utilized femtosecond transient absorption spectroscopy to investigate the decay of photogenerated holes in MnO2 with different Mn vacancies. It was found that a majority of photogenerated holes recombined within a very short time, enhancing the catalytic activity of MnO2. Additionally, introducing an appropriate amount of Mn vacancies extended the lifetime of photogenerated carriers and confirmed the importance of the photocatalytic pathway in degrading volatile organic compounds.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Huiyu Zhang, Xianming Zheng, Tongzhou Xu, Pengyi Zhang
Summary: This study demonstrated the synthesis of a catalyst by doping rare-earth elements into MnO2 nanosheets for the room-temperature catalytic decomposition of low-concentration VOCs, achieving efficient removal and regeneration. The research sheds light on the development of low-cost and high-activity catalysts for VOC oxidation at room temperature.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Xianming Zheng, Zhang Wu, Jie Yang, Sadia Rehman, Ranran Cao, Pengyi Zhang
Summary: N-doped granular carbons synthesized by direct carbonization of metal-organic gel exhibit high toluene adsorption capacity and rapid regeneration, making them crucial for capturing VOCs from high humidity air. These materials show significant improvement in toluene adsorption compared to traditional carbon materials and exhibit excellent hydrophobicity, with a critical role of effective diffusion length in regeneration rate.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Yu Zhang, Hong Zheng, Pengyi Zhang, Xianming Zheng, Qi Zuo
Summary: A facile method was reported to achieve the slow polymerization of dopamine in the cages of MIL-100 (Fe) followed by the hydrolysis of the urea for efficiently and selectively removing trace heavy metal ions, offering a promising approach for the preparation of adsorption materials for efficient and selective removal of heavy metal ions from drinking water.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Ranran Cao, Lianxin Li, Pengyi Zhang
Summary: A MnO2-based hybrid aerogel with good moisture resistance was synthesized using cellulose nanofibers as scaffolds, enhancing the exposure of active sites and alleviating catalyst deactivation. The interconnected macroporous structure facilitates rapid diffusion of ozone molecules, contributing to high and stable ozone conversion.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Yongshuai Qu, Xianming Zheng, Keke Ma, Weiwei He, Shan Wang, Pengyi Zhang
Summary: By utilizing friction heat and mechanical action, MnO2 was efficiently loaded onto the surface of PET fibers to form MnO2@PET composites, which exhibited superior HCHO removal rate and conversion to CO2, while also being durable and easily regenerated.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Qi Zuo, Hong Zheng, Pengyi Zhang, Yu Zhang
Summary: The low-cost purification material polydopamine/activated carbon fibers (PDA/H-ACF) was successfully prepared for efficient and selective trace heavy metals removal from drinking water. The optimized sample showed enhanced adsorption performance for trace lead, meeting the relevant standard requirement, and demonstrated superior adsorption capabilities in various conditions, indicating promising application prospects.
Article
Chemistry, Physical
Tongzhou Xu, Pengyi Zhang, Huiyu Zhang
Summary: Efficient removal of human-emitted gaseous pollutants in indoor air can reduce energy consumption. This study reported a catalytic method for the room and low-temperature removal of human-emitted acetic acid. Ultrathin delta-MnO2 nanoribbons were synthesized and could transform acetic acid into CO2 even at room temperature.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Qi Zuo, Hong Zheng, Pengyi Zhang, Yu Zhang, Baichao Zhang
Summary: In this study, we report a novel activated carbon fiber with multiple active sites, which can selectively and efficiently remove trace heavy metals from drinking water. The activated carbon fiber shows excellent application prospects in water purification.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Yu Zhang, Hong Zheng, Pengyi Zhang, Qi Zuo, Baichao Zhang, Xueying Ren
Summary: Fe3O4@ZIF-8-DMTD adsorbent prepared using a novel method showed effective adsorption of trace heavy metals from drinking water. The adsorbent's negative surface charges and abundant thiol/nitrogen sites greatly improved the adsorption rate and capacity. It also exhibited high stability and adsorption performance in a wide pH and concentration range. Additionally, the adsorbent could be easily recovered and regenerated, showing great potential for purification of trace heavy metals in drinking water.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Construction & Building Technology
Tingxia Hu, Shanhong Sui, Jiale Li, Pengyi Zhang
Summary: Aldehydes, apart from formaldehyde, are commonly found in indoor environments and pose significant threats to human health. However, there have been limited efforts to catalytically decompose them at room temperature. In this study, hydrothermally synthesized weakly crystallized ultrafine MnO2 nanowires were used to decompose hexanal, a frequently detected indoor odorant. The nanowires formed a three-dimensional porous structure, exposing active sites. With its high specific surface area, abundant oxygen vacancies, and ability to generate superoxide radicals at room temperature, the MnO2 nanowires achieved fast and complete oxidation of hexanal at significantly lower temperatures compared to catalysts reported in previous literatures. Moreover, the nanowires exhibited excellent room-temperature catalytic activity for the removal of hexanal at ppb levels. This work demonstrates the feasibility of catalytically removing aldehydes other than formaldehyde at room temperature.
BUILDING AND ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yankai Xie, Xiaojing Zhu, Pengyi Zhang, Shan Wang, Jie Yang, Jinge Li
Summary: Air disinfection in HVAC systems is crucial due to the increased threats of pathogenic bioaerosol. UV irradiation (UV254/ UV185+254) combined with micro-static electricity was studied to achieve efficient disinfection. The combination process overcame adverse factors and achieved efficient disinfection within a short time. It showed advantages in disinfection stability, pressure drop, energy consumption, and equipment costs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Sadia Rehman, Xianming Zheng, Pengyi Zhang
Summary: In this study, a granular zinc-based metalorganic gel, ZIF-412(gel), was synthesized and found to exhibit excellent adsorption performance for capturing trace volatile organic compounds. Compared to commercial activated carbon and other MOFs, ZIF-412(gel) showed higher adsorption capacity and could be regenerated at a low temperature without significant loss in capacity.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xianming Zheng, Sadia Rehman, Pengyi Zhang
Summary: This study reports a green method for the room temperature synthesis of a stable Fe-based MOF monolith using water as the solvent. The optimized monolith exhibits high porosity and mechanical strength, and shows excellent adsorption performance for aromatic VOCs. It can also be rapidly regenerated at lower temperature.
JOURNAL OF HAZARDOUS MATERIALS
(2023)