Search results for: Bopeng Zhang

Items from 1 to 13 out of 13 results

article

Low-cost biochar derived from corncob as oxygen reduction catalyst in air cathode microbial fuel cells

Meng Li, Hongguo Zhang, Tangfu Xiao, Shengdan Wang, more

Electrochimica Acta > 2018 > 283 > C > 780-788

Low-cost biochar derived from corncob was prepared by a facile pyrolysis method at controlled temperatures (250–750 °C) and the biochar was employed as oxygen reduction reaction (ORR) catalyst in air cathode microbial fuel cells (MFCs). The obtained biochar at 650 °C (CC-650) showed an excellent electrochemical active area up to 655.89 m² g⁻¹, and various forms of nitrogen were introduced to the carbon...

article

Enhanced permeation and antifouling performance of polyvinyl chloride (PVC) blend Pluronic F127 ultrafiltration membrane by using salt coagulation bath (SCB)

Yang Zhang, Xin Tong, Bopeng Zhang, Chunfang Zhang, more

Journal of Membrane Science > 2018 > 548 > C > 32-41

Polyvinyl chloride (PVC) has drawn much attention as an ultrafiltration (UF) membrane material. However, conventional PVC UF membranes suffer from low flux and serious fouling when applied to water treatment. In the present study, a salt coagulation bath (SCB) has been successfully employed to enhance the morphological structures and properties of PVC/Pluronic F127 (F127) UF membranes. The resultant...

article

Rose flower-like nitrogen-doped NiCo2O4/carbon used as cathode electrocatalyst for oxygen reduction in air cathode microbial fuel cell

Meng Li, Hongguo Zhang, Tangfu Xiao, Bopeng Zhang, more

Electrochimica Acta > 2017 > 258 > C > 1219-1227

Microbial fuel cell (MFC) is a renewable bio-electrochemical technology which can harvest bioelectricity from wastewater treatment using exoelectrogenic bacteria. The development of nonprecious metal catalysts for enhancing the oxygen reduction reaction (ORR) based on abundancy is important for MFC. Herein, a rose flower-like nitrogen-doped NiCo₂O₄/carbon (N-NiCo₂O₄/C) has been prepared via a facile...

article

A Novel Hybrid Poly (vinyl alcohol) (PVA)/Poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) Membranes for Reverse Electrodialysis Power System

Hongguo Zhang, Di Jiang, Bopeng Zhang, Jin Gi Hong, more

Electrochimica Acta > 2017 > 239 > C > 65-73

The ion exchange membrane (IEM) is a primary component in the reverse electrodialysis (RED) system for salinity gradient power generation. A great challenge exists in the selection of appropriate membrane materials and the design of proper RED membranes to optimize such an energy-producing process. This work presents a novel and cost-effective method for preparing hybrid cation exchange membranes...

article

Enhancing fouling resistance of polyethylene anion exchange membranes using carbon nanotubes and iron oxide nanoparticles

Carolina Fernandez-Gonzalez, Bopeng Zhang, Antonio Dominguez-Ramos, Raquel Ibañez, more

Desalination > 2017 > 411 > C > 19-27

This work presents the enhancement of organic fouling resistance of nanocomposite anion exchange membranes made from a commercial polyethylene anion exchange membrane and a negative thin layer. This layer is composed of sulfonated poly (2,6-dimethyl-1,4-phenylene oxide) (sPPO) and two nanomaterials of different geometry and composition, oxidized multi-walled carbon nanotubes CNTs-COO⁻ (0.2% gg⁻¹ to...

article

Fe2O3 nanocomposite PVC membrane with enhanced properties and separation performance

Elif Demirel, Bopeng Zhang, Marc Papakyriakou, Shuman Xia, more

Journal of Membrane Science > 2017 > 529 > C > 170-184

Organic and inorganic mixed matrix membranes are one of the most promising new membrane materials for ultrafiltration (UF) separation applications. In this study, PVC/Fe₂O₃-mixed UF membranes were fabricated at different nano-Fe₂O₃ loading levels (0–2wt%) using the phase inversion method. Surface chemical compositions, surface and cross-section morphologies and characteristics, hydrophilicity and...

article

An integrative modeling and experimental study on the ionic resistance of ion-exchange membranes

Bopeng Zhang, Jin Gi Hong, Shihua Xie, Shuman Xia, more

Journal of Membrane Science > 2017 > 524 > C > 362-369

In many applications, the ionic resistance of an ion-exchange membrane shows a strong dependency on the external solution concentration and hydrodynamic environment. It is critical to understand the insights of ion exchange membrane process if its ionic resistance can be simulated accurately. In this paper, we have developed a new model by taking into account both the membrane properties that affect...

article

Fouling resistant nanocomposite cation exchange membrane with enhanced power generation for reverse electrodialysis

Xin Tong, Bopeng Zhang, Yongsheng Chen

Journal of Membrane Science > 2016 > 516 > C > 162-171

Renewable energy can be generated from the mixing of seawater with river water by reverse electrodialysis (RED). As part of the RED system, ion exchange membranes (IEMs) are key factors to the success of future RED energy generation. This research presents the synthesis and characterization of a new kind of nanocomposite cation exchange membrane (CEM) by using oxidized multi-walled carbon nanotubes...

article

Potential ion exchange membranes and system performance in reverse electrodialysis for power generation: A review

Jin Gi Hong, Bopeng Zhang, Shira Glabman, Nigmet Uzal, more

Journal of Membrane Science > 2015 > 486 > C > 71-88

Reverse electrodialysis (RED) is an emerging membrane-based energy conversion process used to extract electricity by mixing two water streams of different salinities. This technique utilizes transport of cations and anions during controlled mixing of saltwater and freshwater through selective ion exchange membranes. The development of ion exchange membranes and optimization of system performance are...

article

Luxury fashion consumption in China: Factors affecting attitude and purchase intent

Bopeng Zhang, Jung-Hwan Kim

Journal of Retailing and Consumer Services > 2013 > 20 > 1 > 68-79

This study examined influencing factors that affect Chinese consumers’ attitude towards purchasing luxury fashion goods and purchase intent. Data was collected in three major cities in China (i.e., Beijing, Shanghai and Guangzhou). A total of 161 respondents were included. Using regression analyses, the results indicated that brand consciousness, social comparison and fashion innovativeness have significant...

article

Self-generation of machining precision and its realization in lapping of super precision solid balls

Bopeng Zhang

Frontiers of Mechanical Engineering > 2008 > 3 > 3 > 348-353

This paper presents the principle of self-generation of machining precision by explaining its basic concept and five necessary conditions for forming a system with self-organization capability. A self-generation system is a kind of system with self-organization capability. The self-generation of machining precision for solid balls with super precision is emphatically explained. From the view-point...

article

A study on calibration of coefficients in end milling forces model

Zhihai Zhang, Li Zheng, Lei Zhang, Zhizhong Li, more

The International Journal of Advanced Manufacturing Technology > 2005 > 25 > 7-8 > 652-662

This paper presents an improved approach to calibrate the cutting coefficients in an end-milling model. In order to predict end-milling forces, lots of simulative models are established. In order to use them, coefficients in the models, for example, cutting pressure constants etc., must firstly be calibrated experimentally, and simulative precision and applicability of the models are influenced by...

article

Omnidirectional Dual-Tripod Walking Machine (II) -- Walking Mode Planning.

Jinsong Wang, Bopeng Zhang

Chinese Science Abstracts Series A > 1995 > 14 > 2 Part A > 47

In accordance with the locomotion principle of omnidirectional walking machine DTWM, the deformation motion of vehicle body is modelled. Two kinds of walking mode planning approaches, i. e. Mode (I) and Mode (II) are presented and the emphasis is put on the analyses of Mode (II) which divides the total process of long-distance walking into three phases: stride increasing phase, permanent stride phase...

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