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Featured researches published by Liqun Mao.


Journal of Materials Science | 2016

A general method to synthesize a family of mesoporous silica nanoparticles less than 100 nm and their applications in anti-reflective/fogging coating

Xiying Li; Bing Shi; Watcharop Chaikittisilp; Mengmeng Li; Yujie Wang; Yong Liu; Li Gao; Liqun Mao

Recent advances in strategies for synthesizing mesoporous silica particle (MSN) have enabled the precise control of its morphology, size, and composition which afford the applications in drug delivery and heterogeneous catalysis. Especially for drug delivery, the size of MSNs <100xa0nm is a prerequisite allowing for hemolysis effect. However, a general method for the synthesis of MSNs with uniform size distribution below 100xa0nm still remains challenging. Herein, a general method was developed to synthesize a family of aqueous colloidal MSNs with uniform size <100xa0nm using small organic amines (SOAs) or nitrogen-containing heterocyclic compounds (NCHCs) as alkaline catalysts in the presence of cationic quaternary ammonium salts as organic templates. The size of MSNs can be easily adjusted within the range from 28 to 100xa0nm by the cooperative effect of the mixed alkaline catalysts or using different quaternary ammonium surfactants as templates. Also, texture properties of MSNs including pore diameter and surface area were controlled by selecting different kinds of SOAs or NCHCs. Based on the low refractive index of MSNs, these as-prepared MSNs serve as building blocks and afford an anti-reflective/fogging coating on glass slide through a facile dip-coating method.


RSC Advances | 2018

Pt–Nix alloy nanoparticles: a new strategy for cocatalyst design on a CdS surface for photo-catalytic hydrogen generation

Liqun Mao; Qianqian Ba; Shuang Liu; Xinjia Jia; Heng Liu; Wei Chen; Xiying Li

Solar photocatalytic water splitting for the production of hydrogen has been a core aspect for decades. A highly active and durable photocatalyst is crucial for the success of the renewable hydrogen economy. To date, the development of highly effective photocatalysts has been seen by the contemporary research community as a grand challenge. Thus, herein we put forward a sincere attempt to use a Pt–Nix alloy nanoparticle (NP) cocatalyst loaded CdS photocatalyst ((Pt–Nix)/CdS) for photocatalytic hydrogen production under visible light. The Pt–Nix alloy NP cocatalyst was synthesized using a one-pot solvothermal method. The cocatalyst nanoparticles were deposited onto the surface of CdS, forming a Pt–Nix/CdS photocatalyst. Photocatalytic hydrogen production was carried out using a 300 W Xe light equipped with a 420 nm cut-off filter. The H2 evolution rate of the Pt–Ni3/CdS photocatalyst can reach a value as high as 48.96 mmol h−1 g−1 catalyst, with a quantum efficiency of 44.0% at 420 nm. The experimental results indicate that this Pt–Ni3/CdS photocatalyst is a prospective candidate for solar hydrogen generation from water-splitting.


Chemical Papers | 2018

Heterogeneous liquid phase oxidation of ethylbenzene to acetophenone with graphene carbon-based catalyst

Qian Sun; Xueying Song; Li Gao; Wei Chen; Yamin Li; Liqun Mao; Jing-He Yang

The series of graphene materials and N-doped graphene materials were successfully synthesized and improved by high-temperature treatment with trace iron oxide. XRD, Raman, FT-IR, TEM and XPS were employed for these catalysts. The catalytic performance of these catalysts was investigated in the selective oxidation of ethylbenzene with tert-butyl hydroperoxide as oxidant. The impacts of temperature, mass of catalysts, reaction time and oxidants on the selective oxidation of ethylbenzene were also investigated. The N-doped graphene materials exhibit greatly remarkable catalytic performance than others. The conversion of ethylbenzene is more than 90% and the selectivity of acetophenone is more than 95% at 353xa0K. Graphene can be used as catalyst owing to its unique structures and chemical properties. The characterization tests show that the doping of N atoms can create more defects and more active sites in the N-doped graphene materials which could greatly improve the catalytic performance. Furthermore, such cost-effective graphene-based catalysts possess good stability and could be reused at least five times without remarkable loss of the catalytic activity.


International Journal of Hydrogen Energy | 2015

Nickel nanoparticles modified CdS – A potential photocatalyst for hydrogen production through water splitting under visible light irradiation

Hui Wang; Wei Chen; Jing Zhang; Cunping Huang; Liqun Mao


Applied Catalysis B-environmental | 2016

Polymerizable complex synthesis of SrTiO3:(Cr/Ta) photocatalysts to improve photocatalytic water splitting activity under visible light

Wei Chen; Heng Liu; Xiying Li; Shuang Liu; Li Gao; Liqun Mao; Zeyun Fan; Wenfeng Shangguan; Wenjian Fang; Yongsheng Liu


Applied Surface Science | 2015

Ni(OH)2 loaded on TaON for enhancing photocatalytic water splitting activity under visible light irradiation

Wei Chen; Mingchao Chu; Li Gao; Liqun Mao; Jian Yuan; Wenfeng Shangguan


Applied Surface Science | 2015

Effect of Rh oxide as a cocatalyst over Bi0.5Y0.5VO4 on photocatalytic overall water splitting

Wei Chen; Bingbing Yang; Qingtao Yu; Liqun Mao; Zeyun Fan; Qizhao Wang; Wenfeng Shangguan


Applied Surface Science | 2017

Synthesis of honeycomb-like mesoporous nitrogen-doped carbon nanospheres as Pt catalyst supports for methanol oxidation in alkaline media

Yunmao Zhang; Yong Liu; Weihua Liu; Xiying Li; Liqun Mao


Applied Surface Science | 2010

Role of Cl− ions in photooxidation of propylene on TiO2 surface

Jianhui Guo; Liqun Mao; Jiwei Zhang; Caixia Feng


Catalysis Communications | 2014

Influence of loading Pt, RhO2 co-catalysts on photocatalytic overall water splitting over H1.9K0.3La0.5Bi0.1Ta2O7

Wei Chen; Hui Wang; Liqun Mao; Xiaoping Chen; Wenfeng Shangguan

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Wenfeng Shangguan

Shanghai Jiao Tong University

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Zeyun Fan

Shanghai Jiao Tong University

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